SOUTHWESTERN PUBLIC SERVICE COMPANY (a New Mexico corporation) UNDERWRITING AGREEMENT $250,000,000 Series G Senior Notes, 8.75% due 2018

Exhibit 1.01

EXECUTION VERSION

SOUTHWESTERN PUBLIC SERVICE COMPANY

(a New Mexico corporation)

UNDERWRITING AGREEMENT

$250,000,000 Series G Senior Notes, 8.75% due 2018

November 14, 2008

X.X. Xxxxxx Securities Inc.

000 Xxxx Xxxxxx

Xxx Xxxx, Xxx Xxxx 00000

As Representative of the Underwriters

named in Schedule I hereto

Ladies and Gentlemen:

Southwestern Public Service Company, a New Mexico corporation (the “Company”), proposes to sell to the underwriters named in Schedule I hereto (the “Underwriters”), for whom you are acting as representative) (the “Representative”), an aggregate of $250,000,000 principal amount of its Series G Senior Notes, 8.75% due 2018 (the “Debt Securities”) of the Company to be issued under its Indenture, dated as of February 1, 1999, from the Company to The Bank of New York Mellon Trust Company, N.A., as successor trustee (the “Trustee”), as previously amended and supplemented and as to be amended and supplemented by a supplemental indenture relating to the Debt Securities (such Indenture as so amended and supplemented being hereinafter referred to as the “Indenture”).

1. Representations and Warranties by the Company. The Company represents and warrants to, and agrees with, each Underwriter that:

(a) The Company meets the requirements for use of Form S-3 under the Securities Act of 1933, as amended (the “Act”), and has filed with the Securities and Exchange Commission (the “Commission”) a registration statement on such Form, including a prospectus, for the registration under the Act of the Debt Securities, which registration statement has become effective. Such registration statement and prospectus may have been amended or supplemented from time to time prior to the date of this Agreement. Any such amendment or supplement was filed with the Commission and any such amendment has become effective. As used in this Agreement:

(i) “Applicable Time” means 1:30 p.m., New York City time, on the date of this Agreement;

(ii) “Effective Date” means any date as of which any part of such registration statement relating to the Debt Securities became, or is deemed to have become, effective under the Act in accordance with the rules and regulations thereunder;

(iii) “Final Term Sheet” means the final term sheet in the form attached as Schedule III hereto and prepared and filed pursuant to Section 4(a) hereof;

(iv) “Issuer Free Writing Prospectus” means each “free writing prospectus” (as defined in Rule 405 under the Act), including the Final Term Sheet, prepared by or on behalf of the Company or used or referred to by the Company in connection with the offering of the Debt Securities;

(v) “Preliminary Prospectus” means any preliminary form of prospectus supplement relating to the Debt Securities (together with the base prospectus in the form in which it appears in the Registration Statement) which has heretofore been or is required to be filed by the Company pursuant to Rule 424 under the Act and used prior to the filing of the Prospectus;

(vi) “Pricing Disclosure Package” means, as of the Applicable Time, the most recent Preliminary Prospectus, together with each Issuer Free Writing Prospectus filed or used by the Company on or before the Applicable Time, including the pricing terms of the offering of the Debt Securities and the terms and conditions of the Debt Securities specified in the Final Term Sheet;

(vii) “Prospectus” means the base prospectus in the form in which it appears in the Registration Statement together with the final prospectus supplement relating to the Debt Securities, in the form in which it shall be filed by the Company with the Commission pursuant to Rule 424 under the Act (including the base prospectus as so supplemented); and

(viii) “Registration Statement” means, collectively, the various parts of such registration statement, each as amended as of the Effective Date for such part, including any Preliminary Prospectus or the Prospectus and all exhibits to such registration statement.

Any reference herein to the Registration Statement, the Preliminary Prospectus or the Prospectus shall be deemed to refer to and include the documents incorporated or deemed incorporated by reference therein pursuant to Item 12 of Form S-3 which were filed under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), on or before the date of this Agreement and, if the Company files any documents pursuant to the Exchange Act after the date of this Agreement and prior to the termination of the offering of the Debt Securities by the Underwriters, which documents are deemed to be incorporated by reference into the Prospectus, such filing shall constitute an amendment or supplement to the Prospectus and the term “Prospectus” shall refer also to said Prospectus as supplemented by the documents so filed from and after the time said documents are filed with the Commission. Any reference to the “most recent Preliminary Prospectus” shall be deemed to refer to the latest Preliminary Prospectus included in the Registration Statement or filed pursuant to Rule 424(b) under the Act prior to or

on the date hereof (including for purposes hereof, any documents incorporated by reference therein prior to or on the date hereof).

(b) No order preventing or suspending the use of any Preliminary Prospectus, the Prospectus, the Registration Statement or Issuer Free Writing Prospectus has been issued by the Commission and no proceeding for that purpose has been initiated or threatened by the Commission.

(c) The Registration Statement, on the Effective Date, complied in all material respects with the requirements of the Act, the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”), and the respective rules and regulations of the Commission thereunder and did not and will not, as of the applicable effective date as to each part of the Registration Statement, contain any untrue statement of a material fact or omit any material fact required to be stated therein or necessary in order to make the statements therein not misleading; and, at the time the Prospectus is filed with the Commission and as of the Closing Date (as hereinafter defined), the Prospectus will comply in all material respects with the Act and the rules and regulations of the Commission thereunder and will not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading; provided that the Company makes no representations or warranties as to (A) that part of the Registration Statement which shall constitute the Statement of Eligibility (Form T-1) under the Trust Indenture Act of the Trustee or (B) the information contained in or omitted from the Registration Statement or the Prospectus in reliance upon and in conformity with information furnished in writing to the Company by or on behalf of any Underwriter through the Representative specifically for use in the Registration Statement or Prospectus. Each Preliminary Prospectus and the prospectus filed as part of the Registration Statement as originally filed or as part of any amendment thereto, or filed pursuant to Rule 424 of the Act, complied when so filed in all material respects with the rules under the Act, and each Preliminary Prospectus and the Prospectus delivered to the Underwriters for use in connection with this offering was identical to the electronically transmitted copies thereof filed with the Commission pursuant to XXXXX, except to the extent permitted by Regulation S-T.

(d) The documents incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus, when they were filed with the Commission, conformed in all material respects to the requirements of the Act or the Exchange Act and the rules and regulations of the Commission thereunder, and any documents so filed and incorporated by reference subsequent to the date of this Agreement or any further amendment to or supplement to the Prospectus will, when they are filed with the Commission, conform in all material respects to the requirements of the Act or Exchange Act and the rules and regulations of the Commission thereunder, and none of such documents include or will include any untrue statement of a material fact or omit or will omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading.

(e) The Pricing Disclosure Package, as of the Applicable Time did not, and as of the Closing Date will not, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein, in

light of the circumstances under which they were made, not misleading; provided that the Company makes no representations or warranties as to (A) that part of the Registration Statement which shall constitute the Statement of Eligibility (Form T-1) under the Trust Indenture Act of the Trustee or (B) the information contained in or omitted from the Pricing Disclosure Package in reliance upon and in conformity with information furnished in writing to the Company by or on behalf of any Underwriter through the Representative specifically for use in the Pricing Disclosure Package, which information is specified in Section 10(g) hereof.

(f) Prior to the execution of this Agreement, the Company has not made and will not make (other than the Final Term Sheet) any offer relating to the Debt Securities that would constitute an Issuer Free Writing Prospectus without the prior consent of the Representative; any such Issuer Free Writing Prospectus the use of which has been consented to by the Company and the Representative is listed on Schedule II hereto; the Company has complied and will comply with the requirements of Rule 433 under the Act with respect to any such Issuer Free Writing Prospectus; any such Issuer Free Writing Prospectus will not, as of its issue date and through the time the Debt Securities are delivered pursuant to Section 3 hereof, include any information that conflicts with the information contained in the Registration Statement and the Prospectus, and any such Issuer Free Writing Prospectus, when taken together with the information contained in the Registration Statement, any Preliminary Prospectus and the Prospectus, did not, when issued or filed pursuant to Rule 433, and does not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading; provided that this representation and warranty shall not apply to statements or omissions made therein in reliance upon and in conformity with the information furnished to the Company by or on behalf of an Underwriter through the Representative expressly for use therein, it being understood and agreed that the only such information so furnished consists of the information described in Section 10(g).

(g) Deloitte & Touche LLP, which audited the financial statements and the related financial statement schedule as of and for the year ended December 31, 2007, incorporated by reference in the Registration Statement, the most recent Preliminary Prospectus and the Prospectus from the Company’s Annual Report on Form 10-K for the year ended December 31, 2007, is an independent registered public accounting firm as required by the Act and the rules and regulations of the Commission thereunder and do not provide to the Company any non-audit services which are prohibited by Section 10A(g) of the Exchange Act or which have not been pre-approved in accordance with Section 10A(h) of the Exchange Act.

(h) The financial statements of the Company filed as a part of or incorporated by reference in the Registration Statement, the most recent Preliminary Prospectus or the Prospectus comply in all material respects with the applicable requirements of the Act and the Exchange Act, as applicable, and fairly present the financial position of the Company as of the dates indicated and the results of their operations and changes in financial position for the periods specified, and have been prepared in conformity with generally accepted accounting principles applied on a consistent basis throughout the periods involved, except as disclosed in such financial statements.

(i) The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the State of New Mexico with due corporate authority to carry on the business in which it is engaged and to own and operate the properties used by it in such business, as described in the most recent Preliminary Prospectus and the Prospectus; the Company is qualified to do business as a foreign corporation and is in good standing under the laws of the State of Texas; and the Company is not required by the nature of its business to be licensed or qualified as a foreign corporation in any other state or jurisdiction in which its ownership or lease of property or the conduct of its business requires such qualification and the failure to so qualify might permanently impair title to property material to its operations or its right to enforce a material contract against others or expose it to substantial liabilities; and, except as set forth in the Pricing Disclosure Package and the Prospectus, the Company has all material licenses and approvals required at the date hereof to conduct its business, except where the failure to be so licensed or qualified would not have a material adverse effect on the condition (financial or otherwise), earnings, business or properties of the Company (a “Material Adverse Effect”).

(j) The Company has no subsidiaries.

(k) The Company has an authorized capitalization as set forth in the most recent Preliminary Prospectus and the Prospectus.

(l) The Company has not sustained since the date of the latest audited financial statements included or incorporated by reference in the most recent Preliminary Prospectus or the Prospectus any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor disturbance or dispute or action, order or decree of any court, arbitrator or governmental or regulatory authority, otherwise than as set forth or contemplated in the most recent Preliminary Prospectus and the Prospectus; and, since the respective dates as of which information is given in the Registration Statement and the most recent Preliminary Prospectus, the Company has not incurred any liabilities or obligations, direct or contingent, or entered into any transactions, not in the ordinary course of business, which are material to the Company, and there has not been any material change in the capital stock or long-term debt of the Company or any material adverse change, or any development involving a prospective material adverse change, in or affecting the general affairs, management, business, financial position, stockholder’s equity, or results of operations of the Company, otherwise than as set forth or contemplated in the most recent Preliminary Prospectus and Prospectus.

(m) Neither the execution and delivery of this Agreement and the Indenture, the issuance and delivery of the Debt Securities, the consummation of the transactions herein contemplated and the fulfillment of the terms hereof, nor compliance with the terms and provisions of this Agreement, the Debt Securities and the Indenture will (i) conflict with, or result in the breach of, any of the terms, provisions or conditions of the Articles of Incorporation, as amended, or by-laws of the Company, (ii) conflict with, or result in the breach or violation of any of the terms or provisions of, or constitute a default under or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company pursuant to, any indenture, mortgage, deed of trust, loan agreement or other contract, agreement or instrument to which the Company is a party or to which any of the Company’s property or

assets is subject, the result of which would cause a Material Adverse Effect or (iii) result in the violation of any law, statute, order, rule or regulation applicable to the Company of any court or of any federal or state regulatory body or administrative agency or other governmental body having jurisdiction over the Company or over its properties.

(n) The Company has full right, power and authority to execute and deliver this Agreement, the Debt Securities and the Indenture and to perform its obligations hereunder and thereunder; and all action required to be taken by the Company for the due and proper authorization, execution and delivery of this Agreement, the Debt Securities and the Indenture and the consummation of the transactions contemplated hereby and thereby has been duly and validly taken.

(o) The Debt Securities have been duly authorized for issuance and sale pursuant to this Agreement and, when executed and authenticated in accordance with the Indenture and delivered and paid for as provided herein, will be duly issued and will constitute valid and binding obligations of the Company enforceable in accordance with their terms, except as limited by bankruptcy, insolvency and other laws affecting enforcement of creditors’ rights and general equitable principles, and will be entitled to the benefits of the Indenture which will be substantially in the form heretofore delivered to you.

(p) The Indenture has been duly authorized by the Company and has been duly qualified under the Trust Indenture Act and, when duly executed and delivered by the Company, assuming due authorization, execution and delivery thereof by the Trustee, will constitute a valid and binding obligation of the Company, enforceable in accordance with its terms, except as enforcement thereof may be limited by bankruptcy, insolvency or other laws affecting enforcement of creditors’ rights and general equitable principles.

(q) This Agreement has been duly authorized, executed and delivered by the Company.

(r) Each of the Indenture and the Debt Securities conform in all material respects to the descriptions thereof contained in the Pricing Disclosure Package and the Prospectus.

(s) The statements set forth in the Pricing Disclosure Package and the Prospectus under the captions “Supplemental Description of the Senior Notes” and “Description of the Senior Unsecured Debt Securities,” insofar as they purport to constitute a summary of the terms of the Debt Securities and insofar as they purport to describe the provisions of the laws and documents referred to therein, are accurate and fair summaries in all material respects.

(t) The issuance and sale of the Debt Securities have been duly authorized and approved by an order of the New Mexico Public Regulation Commission (“NMPRC”) and such order is final and in full force and effect on the date hereof; and no other approval of, or any consent, authorization or order of, or filing or registration with, any regulatory public body, state or federal, or any court having jurisdiction over the Company, is, or will be at the Closing Date, necessary in connection with the issuance and sale of the Debt Securities pursuant to this Agreement or the execution, delivery and performance of this Agreement and the Indenture, other than such approvals that have been obtained under the Act and the Trust Indenture Act and

approvals that may be required under state securities laws or regulations of the Financial Industry Regulatory Authority (“FINRA”).

(u) Other than as set forth or contemplated in the Pricing Disclosure Package and the Prospectus, there are no legal or governmental proceedings pending to which the Company is a party or of which any property of the Company is the subject which would reasonably be expected to have a Material Adverse Effect; and, to the best of the Company’s knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others.

(v) Except as set forth in the most recent Preliminary Prospectus and the Prospectus, the Company (i) is not in violation of the Company’s Articles of Incorporation, as amended, or by-laws, (ii) is not in default and no event has occurred which, with notice or lapse of time or both, would constitute such a default, in the due performance or observance of any term, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement or other agreement or instrument to which it is a party or by which it is bound or to which any of its properties or assets is subject or (iii) is not in violation of any law, ordinance, governmental rule, regulation or court decree to which the Company or its property or assets may be subject or has failed to obtain any license, permit, certificate, franchise or other governmental authorization or permit necessary to the ownership of its property or to the conduct of its business, except, in the case of clauses (ii) and (iii), for defaults, events of default, violations and failures which do not or would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(w) The Company has good title to all real and fixed property and leasehold rights and personal property which are owned by it, subject to taxes and assessments not yet delinquent, as to parts of the Company’s property, certain easements, conditions, restrictions, leases, and similar encumbrances which do not affect the Company’s use of such property in the usual course of its business, certain minor defects in titles which are not material, defects in titles to certain properties which are not essential to the Company’s business and mechanics’ lien claims being contested or not of record or for the satisfaction or discharge of which adequate provision has been made by the Company; and any real property and buildings held under lease by the Company are held by it under valid, subsisting and enforceable leases with such exceptions as are not material and do not interfere with the use made and proposed to be made of such property and buildings by the Company.

(x) The franchises held by the Company, together with the applicable Certificates of Convenience and Necessity issued by the NMPRC, give the Company all necessary authority for the maintenance and operation of their respective properties and business as now conducted.

(y) The Company is not and, after giving effect to the offering and sale of the Debt Securities and the application of the proceeds thereof as described in the most recent Preliminary Prospectus and the Prospectus, will not be an “investment company” or an entity “controlled” by an “investment company,” as such terms are defined in the Investment Company Act of 1940, as amended (the “Investment Company Act”).

2. Purchase and Sale. Subject to the terms and conditions and in reliance upon the representations and warranties herein set forth, the Company agrees to sell to the Representative and each other Underwriter, and the Representative and each other Underwriter agree, severally and not jointly, to purchase from the Company, at the purchase price of 98.524% of the principal amount thereof, plus accrued interest, if any, from November 19, 2008 to the Closing Date hereunder, the principal amount of Debt Securities set forth opposite the name of such Underwriter in Schedule I hereto.

The Company acknowledges and agrees that the Underwriters are acting solely in the capacity of an arm’s length contractual counterparty to the Company with respect to the offering of the Debt Securities contemplated hereby (including in connection with determining the terms of the offering) and not as a financial advisor or a fiduciary to, or an agent of, the Company or any other person. Additionally, neither the Representative nor any other Underwriter is advising the Company or any other person as to any legal, tax, accounting or regulatory matters in any jurisdiction. The Company shall consult with its own advisors concerning such matters and shall be responsible for making its own independent investigation and appraisal of the transactions contemplated hereby, and the Underwriters shall have no responsibility or liability to the Company with respect thereto. Any review by the Underwriters of the Company, the transactions contemplated hereby or other matters relating to such transactions will be performed solely for the benefit of the Underwriters and shall not be on behalf of the Company.

3. Delivery and Payment. Delivery of and payment for the Debt Securities shall be made at 9:30 a.m., New York City time, on November 19, 2008, at the offices of Xxxxxxx Xxxxxxx & Xxxxxxxx LLP, 000 Xxxxxxxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000 (the “Closing Location”), which date and time may be postponed by agreement between the Representative and the Company (such date and time being herein called the “Closing Date”). Delivery of the Debt Securities shall be made to the Representative for the respective accounts of the several Underwriters against payment by the several Underwriters through the Representative of the purchase price thereof to or upon the order of the Company in federal (same day) funds. The Debt Securities will be delivered in definitive registered form except that, if for any reason the Company is unable to deliver the Debt Securities in definitive form, the Company reserves the right, as provided in the Indenture, to make delivery in temporary form. Any Debt Securities delivered in temporary form will be exchangeable without charge for Debt Securities in definitive form. The Debt Securities will be registered in the name of Cede & Co., as nominee of DTC and deposited by or on behalf of the Company with DTC or its designated custodian. The Debt Securities will be made available to the Representative for checking in New York, New York, not later than 2:00 p.m., New York City time, on the business day preceding the Closing Date. The documents to be delivered on the Closing Date on behalf of the parties hereto pursuant to Section 7 hereof, including the cross-receipt for the Debt Securities and any additional documents requested by the Underwriters, will be delivered at the Closing Location, and the Debt Securities will be delivered at the office of DTC or its designated custodian, all at the Closing Date. A meeting will be held at the Closing Location at 4:00 p.m., New York City time, on the New York Business Day next preceding the Closing Date, at which meeting the final drafts of the documents to be delivered pursuant to the preceding sentence will be available for review by the parties hereto. For the purposes of this Section 3, “New York Business Day” shall mean each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which

banking institutions in New York City are generally authorized or obligated by law or executive order to close.

4. Agreements of the Company. The Company agrees with the several Underwriters that:

(a) The Company will cause the Prospectus, in a form approved by the Representative, to be filed pursuant to Rule 424(b) under the Act and will notify the Representative promptly of such filing. The Company will prepare the Final Term Sheet, containing solely a description of the terms of the Debt Securities and of the offering, in the form attached as Schedule III hereto, will file such Final Term Sheet pursuant to Rule 433(d) under the Act and will notify the Representative promptly of such filing. During the period for which a prospectus relating to the Debt Securities is required to be delivered under the Act (whether physically or through compliance with Rule 172 under the Act or any similar rule), the Company will promptly advise the Representative (i) when any amendment to the Registration Statement has been filed or shall have become effective, (ii) when any subsequent supplement to the Prospectus (including documents deemed to be incorporated by reference into the Prospectus) has been filed and shall furnish the Representative with copies thereof, (iii) of any request by the Commission for any amendment of or supplement to the Registration Statement or the Prospectus or for any additional information, (iv) of the issuance by the Commission of any stop order or of any order preventing or suspending the use of the Registration Statement, any Preliminary Prospectus, the Prospectus or any Issuer Free Writing Prospectus, (v) of the suspension of the qualification of the Debt Securities for offering or sale in any jurisdiction, (vi) of the initiation or threatening of any proceeding or examination for any such purpose, and (vii) of any request by the Commission for the amending or supplementing of the Registration Statement, any Preliminary Prospectus, the Prospectus or any Issuer Free Writing Prospectus or for additional information. During the period for which a prospectus relating to the Debt Securities is required to be delivered under the Act (whether physically or through compliance with Rule 172 under the Act or any similar rule), the Company will not file (i) any amendment to the Registration Statement or supplement to the Prospectus (except where, in the opinion of the Company’s counsel, such amendment or supplement is advisable or required by law) unless the Company has furnished to the Representative a copy for your review prior to filing and will not file any such proposed amendment or supplement to which the Representative reasonably objects or (ii) any document that would be deemed to be incorporated by reference into the Prospectus without delivering to the Representative a copy of the document proposed to be so filed, such delivery to be made at least 24 hours prior to such filing, and the Company will consult with the Representative as to any comments which the Representative makes in a timely manner with respect to such document. During the period for which a prospectus relating to the Debt Securities is required to be delivered under the Act (whether physically or through compliance with Rule 172 under the Act or any similar rule), the Company will promptly file all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of the Prospectus and for so long as the delivery of a prospectus is required in connection with the offering or sale of the Debt Securities. Following the Closing Date and, for long as a prospectus relating to the Debt Securities is required to be delivered under the Act, in the event of the issuance of any stop order or of any order preventing or suspending the use of any Preliminary Prospectus, the Prospectus or any Issuer Free Writing Prospectus, the Company will

promptly use its best efforts to obtain the withdrawal of such order. In the event of the Company’s receipt of a notice objecting to the use of the form of the Registration Statement or any post-effective amendment thereto, the Company will promptly take such steps including, without limitation, amending the Registration Statement or filing a new registration statement, at its own expense, as may be necessary to permit offers and sales of the Debt Securities by the Underwriters (and references herein to the “Registration Statement” shall include any such amendment or new registration statement).

(b) If, at any time when a prospectus relating to the Debt Securities is required to be delivered under the Act (whether physically or through compliance with Rule 172 under the Act or any similar rule), any event occurs as a result of which the Pricing Disclosure Package or the Prospectus as then amended or supplemented would include any untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it shall be necessary at any time to amend or supplement the Prospectus to comply with the Act or the Exchange Act or the respective rules and regulations of the Commission thereunder, the Company promptly, subject to paragraph (a) of this Section 4, will prepare and file an amendment or supplement to the Prospectus with the Commission and furnish to the Underwriters a reasonable number of copies thereof, or will make a filing with the Commission pursuant to Section 13 or 14 of the Exchange Act, which will correct such statement or omission or will effect such compliance.

(c) The Company will make generally available to its security holders and to the Representative an earnings statement (which need not be audited) of the Company, for a twelve-month period beginning after the date of the Prospectus filed pursuant to Rule 424(b) under the Act, as soon as is reasonably practicable after the end of such period, but in any event no later than eighteen months after the “effective date of the Registration Statement” (as defined in Rule 158(c) under the Act), which will satisfy the provision of Section 11(a) of the Act and the rules and regulations of the Commission thereunder (including at the option of the Company, Rule 158).

(d) The Company will deliver to the Representative conformed copies of the Registration Statement, the Preliminary Prospectus, the Prospectus and the Issuer Free Writing Prospectus (including all documents incorporated by reference therein) and, so long as delivery of a prospectus by an Underwriter or dealer may be required by the Act (whether physically or through compliance with Rule 172 under the Act or any similar rule), all amendments of and supplements to such documents, in each case as soon as available and in such quantities as the Representative may reasonably request.

(e) Other than the Final Term Sheet prepared and filed pursuant to Section 4(a) hereof, without the prior written consent of the Representative, the Company has not made and will not make any offer relating to the Debt Securities that would constitute a “free writing prospectus” as defined in Rule 405 under the Act.

(f) The Company will promptly file all material required to be filed by the Company with the Commission pursuant to Rule 433(d) under the Act and will retain as and to the extent required by Rule 433 under the Act all Issuer Free Writing Prospectuses not required to be filed with the Commission pursuant to the rules and regulations under the Act. If at any time after the

date hereof any events shall have occurred as a result of which any Issuer Free Writing Prospectus, as then amended or supplemented, would conflict with the information in the Registration Statement, the most recent Preliminary Prospectus or the Prospectus or would include an untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in light of the circumstances under which they were made, not misleading, or, if for any other reason it shall be necessary to amend or supplement any Issuer Free Writing Prospectus, the Company will notify the Representative and, upon their request, file such document and prepare and furnish without charge to each Underwriter as many copies as the Representative may from time to time reasonably request of an amended or supplemented Issuer Free Writing Prospectus that will correct such conflict, statement or omission or effect such compliance.

(g) The Company will furnish such information, execute such instruments and take such action as may be required to qualify the Debt Securities for sale under the laws of such jurisdictions in the United States as the Representative may designate and will maintain such qualifications in effect so long as required for the distribution of the Debt Securities; provided that the Company shall not be required to qualify to do business in any jurisdiction where it is not now so qualified or to take any action which would subject it to general or unlimited service of process in any jurisdiction where it is not now so subject.

(h) So long as the Debt Securities are outstanding, the Company will furnish (or cause to be furnished) to the Representative, upon request, copies of all reports and financial statements filed with the Commission or any national securities exchange.

(i) During the period beginning from the date of this Agreement and continuing to the Closing Date, the Company will not offer, sell, or otherwise dispose of any long-term debt securities of the Company (except under prior contractual commitments which have been disclosed to you), without the prior written consent of the Representative.

(j) In connection with the offering of the Debt Securities, until the Underwriters shall have notified the Company and the other Underwriters of the completion of the sale of the Debt Securities, the Company will not, and will use its best efforts to cause its controlled affiliates not to, either alone or with one or more other persons (i) bid for or purchase for any account in which it or any such affiliate has a beneficial interest any Debt Securities or attempt to induce any person to purchase any Debt Securities or (ii) make bids or purchases for the purpose of creating actual, or apparent, active trading in, or of raising the price of, the Debt Securities.

(k) The Company will not take, directly or indirectly, any action which is designed to stabilize or manipulate, or which constitutes or which might reasonably be expected to cause or result in stabilization or manipulation, of the price of any security of the Company in connection with the offering of the Debt Securities.

5. Agreements of the Underwriters. Each Underwriter hereby represents and agrees that:

(a) it has not and will not use, authorize use of, refer to, or participate in the planning for use of, any Issuer Free Writing Prospectus or any “free writing prospectus,” as defined in

Rule 405 under the Act (which term includes use of any written information furnished to the Commission by the Company and not incorporated by reference into the Registration Statement and any press release issued by the Company) required to be filed by the Company with the Commission or retained by the Company pursuant to Rule 433 under the Act, other than (i) a free writing prospectus that contains no “issuer information” (as defined in Rule 433(h)(2) under the Act) that was not included (including through incorporation by reference) in the Preliminary Prospectus or a previously filed Issuer Free Writing Prospectus, (ii) the Final Term Sheet or (iii) any free writing prospectus prepared by such Underwriter and approved by the Company in advance in writing; and

(b) it will, pursuant to reasonable procedures developed in good faith, retain, as and to the extent required under Rule 433 under the Securities Act, copies of each free writing prospectus used or referred to by it, in accordance with Rule 433.

6. Expenses. Whether or not the transactions contemplated hereunder are consummated or this Agreement is terminated, the Company will pay all costs and expenses incident to the performance of the obligations of the Company hereunder, including, without limiting the generality of the foregoing, all costs, taxes and expenses incident to the issue and delivery of the Debt Securities to the Underwriters, all fees and expenses of the Company’s counsel and accountants, all costs and expenses incident to the preparation, printing, filing and distribution of the Registration Statement (including all exhibits thereto), any Preliminary Prospectus, the Prospectus (including all documents incorporated by reference therein), any Issuer Free Writing Prospectus and any amendments thereof or supplements thereto, all costs and expenses (including fees and expenses of counsel) incurred in connection with “blue sky” qualifications and the rating of the Debt Securities, all costs and expenses of the printing and distribution of all documents in connection with this underwriting, the fees and expenses of the Trustee and any paying agent (including related fees and expenses of any counsel to such parties) and all expenses and application fees incurred in connection with any filing with, and clearance of any offering by, the Financial Industry Regulatory Authority. Except as provided in this Section 6 and Sections 9 and 10 hereof, the Underwriters will pay all their own costs and expenses, including the fees of their counsel and any advertising expenses in connection with any offer they may make.

7. Conditions to the Obligations of the Underwriters. The obligations of the Underwriters to purchase the Debt Securities shall be subject, in the discretion of the Representative, to the accuracy of the representations and warranties and other statements on the part of the Company contained herein as of the date hereof and the Closing Date, to the accuracy of the statements of the Company’s officers on and as of the Closing Date made in any certificates given pursuant to the provisions hereof, to the performance by the Company of its obligations hereunder and to the following additional conditions:

(a) The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) under the Act within the applicable time period prescribed for such filing by the rules and regulations under the Act and in accordance with Section 4(a) hereof; all filings (including, without limitation, the Final Term Sheet) required by Rule 433 under the Act shall have been made, and no such filings shall have been made without the consent of the Representative; no stop order suspending the effectiveness of the Registration Statement or any part thereof or

preventing or suspending the use of the Prospectus or any Issuer Free Writing Prospectus shall have been issued and no proceeding for that purpose shall have been initiated or threatened by the Commission; and all requests for additional information on the part of the Commission shall have been complied with to the Representative’s reasonable satisfaction.

(b) The Representative shall be furnished with opinions, dated the Closing Date, of Hinkle, Hensley, Xxxxxx & Xxxxxx L.L.P., substantially in the form included as Exhibit A, and Xxxxx Day, Chicago, Illinois, counsel for the Company, substantially in the form included as Exhibit B.

(c) The Representative shall have received from Xxxxxxx Xxxxxxx & Xxxxxxxx LLP, New York, New York, counsel for the Underwriters, such opinion or opinions dated the Closing Date with respect to such matters as the Representative may reasonably require, and the Company shall have furnished to such counsel such documents as they reasonably request for the purpose of enabling them to pass upon such matters.

(d) The Company shall have furnished to the Representative a certificate of the President or any Vice President of the Company, dated the Closing Date, as to the matters set forth in paragraphs (a) and (h) of this Section 7 and to the further effect that the signers of such certificate have examined the Registration Statement, the Prospectus and this Agreement and that:

(i) the representations and warranties of the Company in this Agreement are true and correct on and as of the Closing Date with the same effect as if made on the Closing Date, and the Company has complied with all the agreements and satisfied all the conditions on its part to be performed or satisfied at or prior to the Closing Date; and

(ii) there has been no material adverse change in the condition of the Company, financial or otherwise, or in the earnings, affairs or business prospects of the Company, whether or not arising in the ordinary course of business, from that set forth or contemplated by the Registration Statement, the most recent Preliminary Prospectus or the Prospectus.

(e) The Representative shall have received letters from Deloitte & Touche LLP, independent public accountants for the Company (dated the date of this Agreement and Closing Date, respectively, and in form and substance satisfactory to the Representative) advising that (i) they are an independent registered public accounting firm with respect to the Company as required by the Act and published rules and regulations of the Commission thereunder, (ii) in their opinion, the financial statements and supplemental schedules included or incorporated by reference in the Registration Statement, the most recent Preliminary Prospectus or Prospectus and covered by their opinion filed with the Commission under Section 13 of the Exchange Act comply as to form in all material respects with the applicable accounting requirements of the Exchange Act and the published rules and regulations of the Commission thereunder, (iii) that they have performed limited procedures, not constituting an audit, including a reading of the latest available interim financial statements of the Company, a reading of the minutes of meetings of the Board of Directors, committees thereof, and of the shareholder of the Company since the date of the most recent audited financial statements included or incorporated by

reference in the most recent Preliminary Prospectus or Prospectus, inquiries of officials of the Company responsible for financial accounting matters and such other inquiries and procedures as may be specified in such letter, and on the basis of such limited review and procedures nothing came to their attention that caused them to believe that: (A) any material modifications should be made to any unaudited financial statements of the Company included or incorporated by reference in the Registration Statement, the most recent Preliminary Prospectus or Prospectus for them to be in conformity with generally accepted accounting principles or any unaudited financial statements of the Company included or incorporated by reference in the Registration Statement, the most recent Preliminary Prospectus or Prospectus do not comply as to form in all material respects with the applicable accounting requirements of the Exchange Act and the rules and regulations of the Commission applicable to Form 10-Q; and (B) with respect to the period subsequent to the date of the most recent financial statements included or incorporated by reference in the most recent Preliminary Prospectus or Prospectus and except as set forth in or contemplated by the Registration Statement, most recent Preliminary Prospectus or Prospectus, there were any adverse changes, at a specified date not more than three business days prior to the date of the letter, in the capital stock of the Company, increases in long-term debt or decreases in stockholder’s equity or net current assets of the Company as compared with the amounts shown on the most recent consolidated balance sheet included or incorporated by reference in the most recent Preliminary Prospectus or Prospectus, or for the period from the date of the most recent financial statements included or incorporated by reference in the Prospectus to such specified date there were any decreases, as compared with the corresponding period in the preceding year, in operating revenues, operating income or net income of the Company, except in all instances for changes or decreases set forth in such letter, in which case the letter shall be accompanied by an explanation by the Company as to the significance thereof unless said explanation is not deemed necessary by the Representative; and (iv) they have carried out specified procedures performed for the purpose of comparing certain specified financial information and percentages (which is limited to financial information derived from general accounting records of the Company or, to the extent not so derived, from schedules prepared by Company officers responsible for such accounting records) included or incorporated by reference in the Registration Statement, the most recent Preliminary Prospectus and the Prospectus with indicated amounts in the financial statements or accounting records of the Company and (excluding any questions of legal interpretation) have found such information and percentages to be in agreement with the relevant accounting and financial information of the Company referred to in such letter in the description of the procedures performed by them.

(f) Subsequent to the respective dates as of which information is given in the Registration Statement and the most recent Preliminary Prospectus, there shall not have been any change or decrease specified in the letter dated as of the Closing Date referred to in paragraph (e) of this Section 7 which is so material and adverse as to make it impractical or inadvisable in the judgment of the Representative to proceed with the public offering or the delivery of the Debt Securities on the terms and in the manner contemplated by the Pricing Disclosure Package.

(g) Subsequent to the execution and delivery of this Agreement, (i) no downgrading shall have occurred in the rating accorded the Debt Securities or any other debt securities or preferred stock of or guaranteed by the Company by any “nationally recognized statistical rating organization,” as such term is defined by the Commission for purposes of Rule 436(g)(2) under the Act (other than downgrades of debt securities issued by or on behalf of governmental entities

for the benefit of the Company solely as a result of downgrades of ratings of any third parties insuring such debt securities) and (ii) no such organization shall have publicly announced that it has under surveillance or review, or has changed its outlook with respect to, its rating of the Debt Securities or of any other debt securities or preferred stock of or guaranteed by the Company (other than an announcement with positive implications of a possible upgrading and other than with respect to debt securities issued by or on behalf of governmental entities for the benefit of the Company solely as a result of any such announcement with respect to any third parties insuring such debt securities).

(h) The Company shall not have (i) sustained since the date of the latest audited financial statements included or incorporated by reference in the most recent Preliminary Prospectus any loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor disturbance or dispute or action, order or decree of any court, arbitrator or governmental or regulatory authority, otherwise than as set forth or contemplated in the most recent Preliminary Prospectus, and (ii) incurred since the date of this Agreement, any liabilities or obligations, direct or contingent, or entered into any transactions, not in the ordinary course of business, which are material to the Company, and there shall not have been any change in the capital stock or long-term debt of the Company or any change, or any development involving a prospective change, in or affecting the general affairs, management, business, financial position, stockholder’s equity, results of operations or prospects of the Company otherwise than as set forth or contemplated in the most recent Preliminary Prospectus and the Prospectus, the effect of which, in any such case described in clause (i) or (ii) above is in the judgment of the Underwriters so material and adverse as to make it impracticable or inadvisable to proceed with the offering, sale or the delivery of the Debt Securities on the terms and in the manner contemplated by this Agreement and the Prospectus.

(i) No Representative shall have advised the Company that the Registration Statement, Pricing Disclosure Package or Prospectus, or any amendment or supplement thereto, contains an untrue statement of fact which in the opinion of counsel for the Underwriters is material or omits to state a fact which in the opinion of counsel for the Underwriters is material and is required to be stated therein or is necessary to make the statements therein not misleading.

(j) No action shall have been taken and no statute, rule, regulation or order shall have been enacted, adopted or issued by any federal, state or foreign governmental or regulatory authority that would, as of the Closing Date, prevent the issuance or sale of the Debt Securities; and no injunction or order of any federal, state or foreign court shall have been issued that would, as of the Closing Date, prevent the issuance or sale of the Debt Securities.

(k) All corporate proceedings and other legal matters incident to the authorization, form and validity of the Indenture and this Agreement and the transactions contemplated hereby shall be reasonably satisfactory to counsel to the Underwriters, and prior to the Closing Date, the Company shall have furnished to the Representative such other customary information, certificates and documents as they may reasonably request.

(l) The Company and Trustee shall have entered into the supplemental Indenture relating to the Debt Securities, and the Representative shall have received counterparts,

conformed as executed thereof, and the Debt Securities shall have been duly executed and delivered by the Company and authenticated by the Trustee.

If any of the conditions specified in this Section 7 shall not have been fulfilled when and as required by this Agreement, or if any of the opinions and certificates mentioned above or elsewhere in this Agreement shall not be satisfactory in form and substance to the Representative and their counsel, this Agreement and all obligations of the Underwriters hereunder may be cancelled at, or at any time prior to, the Closing Date by the Representative. Notice of such cancellation shall be given to the Company in writing, or by telephone or facsimile transmission confirmed in writing.

8. Conditions of Company’s Obligations. The obligations of the Company to sell and deliver the Debt Securities are subject to the following conditions:

(a) Prior to the Closing Date, no stop order suspending the effectiveness of the Registration Statement shall have been issued and no proceedings for that purpose shall have been instituted or, to the knowledge of the Company or the Underwriter, threatened.

(b) The order of the NMPRC referred to in Section 1(t) hereof shall be final and in full force and effect.

If any of the conditions specified in this Section 8 shall not have been fulfilled, this Agreement and all obligations of the Company hereunder may be cancelled on or at any time prior to the Closing Date by the Company. Notice of such cancellation shall be given to the Underwriters in writing or by telephone or facsimile transmission confirmed in writing.

9. Reimbursement of Underwriters’ Expenses. If the sale of the Debt Securities provided for herein is not consummated (i) because this Agreement is terminated pursuant to Section 12 or (ii) because any condition to the obligations of the Underwriters set forth in Section 7 hereof is not satisfied or because of any refusal, inability or failure on the part of the Company to perform any agreement herein or comply with any provision hereof, other than by reason of a default by any of the Underwriters, the Company will reimburse the Underwriters severally upon demand for all out-of-pocket expenses that shall have been reasonably incurred by them in connection with the proposed purchase and sale of the Debt Securities, including the reasonable fees and disbursements of counsel for the Underwriters.

10. Indemnification.

(a) The Company agrees to indemnify and hold harmless each Underwriter, its affiliates, directors and officers and each person, if any, who controls such Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act, from and against any and all losses, claims, damages and liabilities (including, without limitation, legal fees and other expenses reasonably incurred in connection with any suit, action or proceeding or any claim asserted as such fees and expenses are incurred), joint or several, that arise out of, or are based upon, any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, any Preliminary Prospectus, the Prospectus (or any amendment or supplement thereto), or any Issuer Free Writing Prospectus (or amendment or supplement

thereto) or any “issuer information” filed or required to be filed pursuant to Rule 433(d) under the Act or any omission or alleged omission to state therein a material fact required to be stated therein or necessary in order to make the statements therein not misleading, except insofar as such losses, claims, damages or liabilities arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to any Underwriter furnished to the Company in writing by such Underwriter through the Representative expressly for use therein.

(b) Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless the Company, its directors, its officers who signed the Registration Statement and each person, if any, who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act to the same extent as the indemnity set forth in paragraph (a) above, but only with respect to any losses, claims, damages or liabilities that arise out of, or are based upon, any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with any information relating to such Underwriter furnished to the Company in writing by such Underwriter through the Representative expressly for use in the Registration Statement, the Prospectus (or any amendment or supplement thereto), any Preliminary Prospectus or any Issuer Free Writing Prospectus (or any amendment or supplement thereto), it being understood and agreed that the only such information consists of the information identified in Section 10(g) hereof as being provided by the Underwriters.

(c) If any suit, action, proceeding (including any governmental or regulatory investigation), claim or demand shall be brought or asserted against any person in respect of which indemnification may be sought pursuant to either paragraph (a) or (b) above, such person (the “Indemnified Person”) shall promptly notify the person against whom such indemnification may be sought (the “Indemnifying Person”) in writing; provided that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have under this Section 10 except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided, further, that the failure to notify the Indemnifying Person shall not relieve it from any liability that it may have to an Indemnified Person otherwise than under this Section 10. If any such proceeding shall be brought or asserted against an Indemnified Person and it shall have notified the Indemnifying Person thereof, the Indemnifying Person shall retain counsel reasonably satisfactory to the Indemnified Person, which may be counsel to the Indemnifying Person, to represent the Indemnified Person and any others entitled to indemnification pursuant to this Section 10 that the Indemnifying Person may designate in such proceeding and shall pay the reasonable fees and expenses of such counsel related to such proceeding as incurred. In any such proceeding, any Indemnified Person shall have the right to retain its own counsel, but the fees and expenses of such counsel shall be at the expense of such Indemnified Person unless (i) the Indemnifying Person and the Indemnified Person shall have mutually agreed to the contrary; (ii) the Indemnifying Person has failed within a reasonable time to retain counsel reasonably satisfactory to the Indemnified Person; (iii) the named parties in any such proceeding (including any impleaded parties) include both the Indemnifying Person and the Indemnified Person and the Indemnified Person shall have reasonably concluded that there may be legal defenses available to it that are different from or in addition to those available to the Indemnifying Person; or (iv) the named parties in any such proceeding (including any impleaded parties) include both the Indemnifying Person and the Indemnified Person and representation of both parties by the same counsel would be inappropriate due to actual or potential differing

interests between them. It is understood and agreed that the Indemnifying Person shall not, in connection with any proceeding or related proceeding in the same jurisdiction, be liable for the fees and expenses of more than one separate firm (in addition to any local counsel) for all Indemnified Persons, and that all such fees and expenses shall be reimbursed as they are incurred. Any such separate firm for any Underwriter, its affiliates, directors and officers and any control persons of such Underwriter shall be designated in writing by the Representative and any such separate firm for the Company, its directors, its officers who signed the Registration Statement and any control persons of the Company shall be designated in writing by the Company. The Indemnifying Person shall not be liable for any settlement of any proceeding effected without its written consent, but if settled with such consent or if there be a final judgment for the plaintiff, the Indemnifying Person agrees to indemnify each Indemnified Person from and against any loss or liability by reason of such settlement or judgment. No Indemnifying Person shall, without the written consent of the Indemnified Person, effect any settlement of any pending or threatened proceeding in respect of which any Indemnified Person is or could have been a party and indemnification could have been sought hereunder by such Indemnified Person, unless such settlement (x) includes an unconditional release of such Indemnified Person, in form and substance reasonably satisfactory to such Indemnified Person, from all liability on claims that are the subject matter of such proceeding and (y) does not include any statement as to or any admission of fault, culpability or a failure to act by or on behalf of any Indemnified Person.

(d) If the indemnification provided for in paragraphs (a) and (b) above is unavailable to an Indemnified Person or insufficient in respect of any losses, claims, damages or liabilities referred to therein, then each Indemnifying Person under such paragraph, in lieu of indemnifying such Indemnified Person thereunder, shall contribute to the amount paid or payable by such Indemnified Person as a result of such losses, claims, damages or liabilities (i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriters on the other from the offering of the Debt Securities or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) but also the relative fault of the Company on the one hand and the Underwriters on the other in connection with the statements or omissions that resulted in such losses, claims, damages or liabilities, as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and the Underwriters on the other shall be deemed to be in the same respective proportions as the net proceeds (before deducting expenses) received by the Company from the sale of the Debt Securities and the total underwriting discounts and commissions received by the Underwriters in connection therewith, in each case as set forth in the table on the cover of the Prospectus, bear to the aggregate offering price of the Debt Securities. The relative fault of the Company on the one hand and the Underwriters on the other shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company or by the Underwriters and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

(e) The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 10 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation

that does not take account of the equitable considerations referred to in paragraph (d) above. The amount paid or payable by an Indemnified Person as a result of the losses, claims, damages and liabilities referred to in paragraph (d) above shall be deemed to include, subject to the limitations set forth above, any legal or other expenses incurred by such Indemnified Person in connection with any such action or claim. Notwithstanding the provisions of this Section 10, in no event shall an Underwriter be required to contribute any amount in excess of the amount by which the total underwriting discounts and commissions received by such Underwriter with respect to the offering of the Debt Securities exceeds the amount of any damages that such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters’ obligations to contribute pursuant to this Section 10 are several in proportion to their respective purchase obligations hereunder and not joint.

(f) The remedies provided for in this Section 10 are not exclusive and shall not limit any rights or remedies which may otherwise be available to any Indemnified Person at law or in equity.

(g) The Underwriters severally confirm and the Company acknowledges that (i) the statements with respect to the offering of the Debt Securities by the Underwriters set forth in the third paragraph, the sixth paragraph (only the second sentence thereof), the seventh paragraph, the eighth paragraph and the tenth paragraph (only the second sentence thereof) in the section entitled “Underwriting” in the prospectus supplement that is a part of the Preliminary Prospectus and the Prospectus and (ii) the information contained in the last sentence of the last paragraph in Schedule III relating to the Representative, are correct and constitute the only information concerning such Underwriters furnished in writing to the Company by or on behalf of the Underwriters specifically for inclusion in the Registration Statement, the Preliminary Prospectus, the Prospectus or the Final Term Sheet.

11. Default by an Underwriter.

(a) If any Underwriter shall default in its obligation to purchase the Debt Securities which it has agreed to purchase hereunder (in this Section called the “Unpurchased Debt Securities”), the Representative may in its discretion arrange for itself or another party or other parties to purchase such Unpurchased Debt Securities on the terms contained herein. If within 36 hours after such default by any Underwriter, the Representative does not arrange for the purchase of such Unpurchased Debt Securities, then the Company shall be entitled to a further period of 36 hours within which to procure another party or other parties satisfactory to the Representative to purchase such Unpurchased Debt Securities on such terms. In the event that, within the respective prescribed period, the Representative notifies the Company that it has so arranged for the purchase of such Unpurchased Debt Securities, or the Company notifies the Representative that it has so arranged for the purchase of such Unpurchased Debt Securities, the Representative or the Company shall have the right to postpone the Closing Date for such Unpurchased Debt Securities for a period of not more than seven days, in order to effect whatever changes may thereby be made necessary in the Registration Statement or the Prospectus as amended or supplemented, or in any other documents or arrangements, and the

Company agrees to file promptly any amendments or supplements to the Registration Statement or the Prospectus which in the opinion of the Representative may thereby be made necessary. The term “Underwriter” as used in this Agreement shall include any person substituted under this Section with like effect as if such person had originally been a party to this Agreement with respect to such Unpurchased Debt Securities.

(b) If, after giving effect to any arrangements for the purchase of the Unpurchased Debt Securities of a defaulting Underwriter or Underwriters by the Representative and the Company as provided in subsection (a) above, the aggregate principal amount of such Unpurchased Debt Securities which remains unpurchased does not exceed one eleventh of the aggregate principal amount of the Debt Securities, then the Company shall have the right to require each non-defaulting Underwriter to purchase the principal amount of Debt Securities which such Underwriter agreed to purchase hereunder and, in addition, to require each non-defaulting Underwriter to purchase its pro rata share (based on the principal amount of Debt Securities which such Underwriter agreed to purchase hereunder) of the Unpurchased Debt Securities of such defaulting Underwriter or Underwriters for which such arrangements have not been made; but nothing herein shall relieve a defaulting Underwriter from liability for its default.

(c) If, after giving effect to any arrangements for the purchase of the Unpurchased Debt Securities of a defaulting Underwriter or Underwriters by the Representative and the Company as provided in subsection (a) above, the aggregate principal amount of Unpurchased Debt Securities which remains unpurchased exceeds one-eleventh of the aggregate principal amount of the Debt Securities, as referred to in subsection (b) above, or if the Company shall not exercise the right described in subsection (b) above to require non-defaulting Underwriters to purchase Unpurchased Debt Securities of a defaulting Underwriter or Underwriters, then this Agreement shall thereupon terminate, without liability on the part of any non-defaulting Underwriter or the Company, except for the expenses to be borne by the Company and the Underwriters as provided in Section 6 hereof and the indemnity and contribution agreements in Section 10 hereof; but nothing herein shall relieve a defaulting Underwriter from liability for its default.

12. Termination. This Agreement shall be subject to termination in the absolute discretion of the Representative, by notice given to the Company prior to delivery of and payment for all Debt Securities, if prior to such time (i) trading shall have been suspended or materially limited on the New York Stock Exchange or the over-the-counter market, (ii) trading of any securities issued or guaranteed by the Company shall have been suspended on any exchange or in any over-the-counter market, (iii) a general moratorium on commercial banking activities shall have been declared by federal or New York State authorities or a material disruption in commercial banking or securities clearance or settlement services shall have occurred or (iv) there shall have occurred any outbreak or escalation of hostilities or any change in financial markets or any calamity or crisis, either within or outside the United States, that, in the judgment of the Representative, is material and adverse and makes it impracticable or inadvisable to proceed with the offering, sale or delivery of the Debt Securities on the terms and in the manner contemplated by this Agreement and the Prospectus.

13. Representations and Indemnities to Survive Delivery. The respective agreements, representations, warranties, indemnities and other statements of the Company or its officers and

of the Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation made by or on behalf of any Underwriter or the Company or any of their respective officers, directors or controlling persons within the meaning of the Act, and will survive delivery of and payment for the Debt Securities. The provisions of Sections 6, 9 and 10 hereof shall survive the termination or cancellation of this Agreement.

14. Notices. All communications hereunder will be in writing and, if sent to the Representative, will be mailed, delivered or transmitted and confirmed to them in care of X.X. Xxxxxx Securities Inc., 000 Xxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000 (fax: 000-000-0000), or, if sent to the Company, will be mailed, delivered or transmitted and confirmed to it at 000 Xxxxxxxx Xxxx, 0^xx Xxxxx, Xxxxxxxxxxx, Xxxxxxxxx 00000, Attention: Treasurer, Fax: 000-000-0000. All communications shall take effect at the time of receipt thereof.

15. Persons Entitled to Benefit of Agreement. This Agreement will inure to the benefit of and be binding upon the parties hereto and their respective successors and the officers and directors and controlling persons referred to in Section 10 hereof, and the affiliates of each Underwriter referred to in Section 10 hereof. Nothing in this Agreement is intended or shall be construed to give any other person any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision contained herein. No purchaser of Debt Securities from any Underwriter shall be deemed to be a successor merely by reason of such purchase.

16. Applicable Law. This Agreement will be governed by and construed in accordance with the laws of the State of New York.

17. Counterparts. This Agreement may be executed in counterparts, all of which, taken together, shall constitute a single agreement among the parties to such counterparts.

18. Representation of the Underwriters. The Representative represents and warrants to the Company that it is authorized to act as the representative of the Underwriters in connection with this financing and that the Representative’s execution and delivery of this Agreement and any action under this Agreement taken by such Representative will be binding upon all Underwriters.

19. Amendment and Waiver. No amendment or waiver of any provision of this Agreement, nor any consent or approval to any departure therefrom, shall in any event be effective unless the same shall be in writing and signed by the parties hereto.

20. Other. Time shall be of the essence for all purposes of this Agreement. As used herein, “business day” shall mean any day other than a day on which banks are permitted or required to be closed in New York City.

If the foregoing is in accordance with your understanding of our agreement, please sign and return to us the enclosed duplicate hereof, whereupon this letter and your acceptance shall represent a binding agreement among the Company and the several Underwriters.

Very truly yours,

SOUTHWESTERN PUBLIC SERVICE COMPANY


By:	/s/ Xxxxxx X. Xxxxx, XX
	Name:	Xxxxxx X. Xxxxx, XX
	Title:	Vice President and Treasurer

The foregoing Agreement is hereby confirmed

and accepted as of the date first above written.

X.X. XXXXXX SECURITIES INC.

By:	/s/ Xxxxxx Xxxxxxxxx
	Name:	Xxxxxx Xxxxxxxxx
	Title:	Vice President

For itself and as Representative of the several

Underwriters named in Schedule I to the foregoing

Agreement.

SCHEDULE I

Underwriters

Name	Amount

X.X. Xxxxxx Securities Inc.	$	187,500,000
Xxxxx Fargo Securities, LLC	$	62,500,000

TOTAL	$	250,000,000

II-1

SCHEDULE II

Issuer Free Writing Prospectuses

1. Final Term Sheet, dated November 14, 2008, in the form annexed hereto as Schedule III.

II-2

SCHEDULE III

Final Term Sheet

Free Writing Prospectus

Filed Pursuant to Rule 433

Registration Statement No. 333-153241

November 14, 2008

SOUTHWESTERN PUBLIC SERVICE COMPANY

$250,000,000 SERIES G SENIOR NOTES, 8.75% DUE 2018

Issuer:		Southwestern Public Service Company
Issue Format:		SEC Registered
Ratings*:		BBB+/Baa1/BBB+ (stable/stable/stable) (S&P/Xxxxx’x/Fitch)
Note Type:		Senior Notes
Total Principal Amount:		$250,000,000
Pricing Date:		November 14, 2008
Settlement Date:		November 19, 2008
Maturity Date:		December 1, 2018
Interest Payment Dates:		Each June 1 and December 1, commencing on June 1, 2009
Daycount		30/360
Coupon:		8.75% semi-annual
Re-offer/Issue Price to Public:		99.174%
Re-offer Yield:		8.875%
Reference Benchmark:		3.75% due November 15, 2018
Benchmark Price:		100-08
Benchmark Yield:		3.720%
Re-offer Spread:		515.5 bps
Make-Whole Call:		T+50 bps
Sole Book-Running Manager:		X.X. Xxxxxx Securities Inc.
Co-Manager:		Xxxxx Fargo Securities, LLC

		Nine Months Ended September 30, 2008		Year Ended December 31, 2007
Pro Forma Ratio of Earnings to Fixed Charges		1.6		1.5

*Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting XXXXX on the SEC website at xxx.xxx.xxx. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling X.X. Xxxxxx Securities Inc. at 000-000-0000.

III-1

EXHIBIT A

Letterhead of Hinkle, Hensley, Xxxxxx & Xxxxxx L.L.P.

X.X. Xxxxxx Securities Inc.

000 Xxxx Xxxxxx

Xxx Xxxx, Xxx Xxxx 00000

Re:

$250,000,000 principal amount of Debt Securities, Series G Senior Notes, 8.75% due 2018, of Southwestern Public Service Company, a New Mexico corporation.

Ladies and Gentlemen:

This opinion is being furnished to you in connection with the issue and sale by Southwestern Public Service Company (the “Company”) of $250,000,000 principal amount of Debt Securities, Series G Senior Notes, 8.75% due 2018 herein called the “Debt Securities.” This opinion is being delivered to you pursuant to Section 7(b) of the Underwriting Agreement, dated November 14, 2008 (the “Underwriting Agreement”), between the Company and X.X. Xxxxxx Securities Inc. (the “Representative”). Unless otherwise stated, defined terms used herein shall have the respective meanings given them in the Underwriting Agreement.

We are familiar with the legal matters pertaining to, and the corporate proceedings of the Company taken with respect to, the authorization, issuance and sale by the Company of the Debt Securities. We have examined, among other things, the Registration Statement and the Prospectus, and any amendment or supplement thereto, the corporate records of the Company, the Indenture, the Supplemental Indenture creating the Debt Securities, the proceedings before The New Mexico Public Regulation Commission with respect to the issuance and sale of the Debt Securities and such other proceedings, papers and documents as we have deemed relevant for the purpose of rendering the opinions enumerated below. In such examination, we have assumed the genuineness of all signatures, the authenticity of all documents submitted to us as originals, the conformity to the original documents of all documents submitted to us as copies and the authenticity of all such latter documents. We have relied as to various questions of fact (but not as to legal conclusions) upon discussions with officers and representatives of the Company and the representations and warranties of the Company contained in the Underwriting Agreement and upon the certificates of public officials and of officers of the Company being delivered to you thereunder. With respect to the opinions expressed in paragraph (5) below, we have relied on information obtained from public records and from the Company.

On the basis of the foregoing, and subject to the limitations and qualifications set forth herein, it is our opinion that:

1. The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of New Mexico with corporate power and authority to own or lease, as the case may be, and to operate its properties and conduct its business as described in

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the most recent Preliminary Prospectus and Prospectus and to enter into and perform its obligations under the Indenture and the Underwriting Agreement; and the Company is duly qualified to do business as a foreign corporation and is in good standing under the laws of each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to be so qualified would not have a material adverse effect on the condition (financial or otherwise), prospects, earnings, business or properties of the Company, whether or not arising from transactions in the ordinary course of business.

2. The Indenture has been duly and validly authorized, executed and delivered by the Company and (assuming the Indenture has been duly authorized, executed and delivered by the Trustee) constitutes a legal, valid and binding obligation of the Company under the laws of the State of New Mexico, and does not violate New Mexico law.

3. The issuance and sale by the Company of the Debt Securities pursuant to the Underwriting Agreement have been duly authorized by all necessary corporate action; the Debt Securities have been duly and validly authorized, executed and delivered by the Company and (assuming the Debt Securities have been duly authenticated and delivered by the Trustee) constitute legal, valid and binding obligations of the Company under the laws of the State of New Mexico, and do not violate New Mexico law.

4. The issuance and sale of the Debt Securities have been duly authorized and approved by an order of The New Mexico Public Regulation Commission and such order is final and in full force and effect on the date hereof, the time for appeal therefrom or review thereof or intervention with respect thereto having expired; no further approval, authorization, consent or other order of any public board or body (including the Public Utility Commission of Texas) is required in connection with the transactions contemplated by the Underwriting Agreement or the Indenture, other than approvals that may be required under blue sky laws of any jurisdiction in connection with the purchase and distribution of the Debt Securities by the Underwriters in the manner contemplated herein and in the most recent Preliminary Prospectus and the Prospectus.

5. The Underwriting Agreement has been duly authorized, executed and delivered by the Company.

6. With minor exceptions relating to the use of streets and highways outside incorporated communities in New Mexico, and Texas and with respect to the right of the City of Pampa, Texas, to purchase properties of the Company within its limits at a purchase price to be determined upon appraisal, the Company holds valid franchises in the territory in which it operates which have no burdensome restrictions and are adequate to conduct its business in such territory.

7. Neither the execution and delivery of the Underwriting Agreement or the Supplemental Indenture, the issue and sale of the Debt Securities, nor the consummation of any other of the transactions therein contemplated, nor the fulfillment of the terms thereof will conflict with, result in a breach or violation or imposition of any lien, charge or encumbrance upon any property or assets of the Company pursuant to, (i) the Restated Articles of

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Incorporation, as amended, or By-Laws; (ii) the terms of any indenture, contract, lease, mortgage, deed of trust, note agreement, loan agreement or other agreement, obligation, condition, covenant or instrument known to us to which the Company is a party or bound or to which its or its property or assets is subject; or (iii) any statute, law, rule, regulation, judgment, order or decree applicable to the Company of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or any of its or its properties.

8. Other than as set forth in the most recent Preliminary Prospectus and the Prospectus there is not pending or, to the best of our knowledge, threatened any action, suit, proceeding, inquiry or investigation, to which the Company is a party, or to which the property of the Company thereof is subject, before or brought by any court or governmental agency or body, which individually or in the aggregate, would have a material adverse effect on the condition (financial or otherwise), prospects, earnings, business or properties of the Company, whether or not arising from transactions in the ordinary course of business, or which might reasonably be expected to materially and adversely affect the consummation of the transactions contemplated in the Underwriting Agreement or the performance of its obligations thereunder or the transactions contemplated by the most recent Preliminary Prospectus or Prospectus.

In connection with this opinion, we have participated in discussions with officers and representatives of the Company, in certain of which your representatives and counsel also participated and at which the affairs of the Company and the contents of the Registration Statement, the Pricing Disclosure Package and the Prospectus were discussed. There is no assurance that all possible material facts as to the Company were disclosed to us or that our familiarity with the Company or the operations in which it is engaged is such that we have necessarily recognized the materiality of such facts as were disclosed. Accordingly, we have to a large extent relied upon statements of officers and representatives of the Company as to the materiality of those facts disclosed to us. We are not passing upon and do not assume any responsibility for the accuracy, completeness or fairness of the statements contained in the Registration Statement, the Pricing Disclosure Package and the Prospectus. Subject to the foregoing, and to the other limitations and qualifications expressed in this letter, we may state that nothing has come to our attention that would lead us to believe that the Registration Statement, when it became effective, or at the Time of Sale, contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading, the Pricing Disclosure Package at the Time of Sale, as of 1:30 p.m. New York City Time, on November 14, 2008 (being a time that you have informed us was prior to the sale of the Debt Securities by the Underwriters as contemplated by the Prospectus) contained any untrue statement of a material fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or that, at the date the Prospectus Supplement was filed with the Securities and Exchange Commission, the Prospectus included, or, at the date hereof, the Prospectus includes an untrue statement of a material fact or omitted, or omits, to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, that we do not express any belief as to the financial statements or other financial or statistical data contained or incorporated by reference in the Registration Statement, the Pricing Disclosure Package or the Prospectus, as to any information

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contained therein furnished to the Company in writing by any Underwriter expressly for use therein or as to the Statement of Eligibility.

This opinion is limited to the laws of the States of New Mexico and Texas and the federal law of the United States of America. We are not opining herein with respect to the securities or “blue sky” laws of any state. Finally, this opinion speaks as of the date hereof and we undertake no responsibility to advise you of any change in circumstances after the date hereof.

Xxxxx Day and Xxxxxxx Xxxxxxx & Xxxxxxxx LLP are hereby authorized to rely upon this letter as if this letter were addressed to it. This letter is not being delivered for the benefit of, nor may it be relied upon by, the holders of the Debt Securities or any other party to which it is not specifically addressed or to which reliance has not expressly been permitted hereby.

Respectfully submitted,

HINKLE, HENSLEY, XXXXXX & XXXXXX, L.L.P.

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EXHIBIT B

Letterhead of Xxxxx Day

X.X. Xxxxxx Securities Inc.

000 Xxxx Xxxxxx

Xxx Xxxx, Xxx Xxxx 00000

Re:

$250,000,000 million principal amount of Series G Senior Notes, 8.75% due 2018 of Southwestern Public Service Company, a New Mexico corporation

Ladies and Gentlemen:

We have acted as special counsel for Southwestern Public Service Company, a New Mexico corporation (the “Company”), in connection with the purchase from the Company by the underwriters named in Schedule I to the Underwriting Agreement (as defined below) (collectively, the “Underwriters”), pursuant to the Underwriting Agreement, dated as of November 14, 2008 (the “Underwriting Agreement”), by and between the Company and the Underwriter, of $250,000,000 million in principal amount of its Series G Senior Notes, 8.75% due 2018 (the “Debt Securities”) issued under the Indenture, dated as of February 1, 1999 (the “Indenture”), by and between the Company and The Bank of New York Mellon Trust Company, N.A., as successor trustee (the “Trustee”), as amended and supplemented, and the Fifth Supplemental Indenture, dated as of November 1, 2008 by and between the Company and the Trustee (the “Supplemental Indenture”). The Indenture, as amended and supplemented, and the Supplemental Indenture are herein collectively referred to as the “Indenture.” This letter is furnished to the Underwriters pursuant to Section 7(b) of the Underwriting Agreement. Except as otherwise defined herein, terms used in this letter but not otherwise defined herein are used as defined in the Underwriting Agreement.

In connection with the opinions and views expressed herein, we have examined such documents, records and matters of law as we have deemed relevant or necessary for purposes of such opinions and views. Based upon the foregoing and subject to the further limitations, qualifications and assumptions set forth herein, we are of the opinion that:

1. Assuming that (a) the Company is a corporation existing and in good standing under the laws of the State of New Mexico and (b) the Indenture (i) has been (A) authorized by all necessary corporate action of the Company and (B) executed and delivered by the Company under the laws of the State of New Mexico and (ii) does not violate the laws of the State of New Mexico, the Indenture constitutes a valid and binding obligation of the Company under New York law, enforceable against the Company in accordance with its terms.

2. Assuming that (a) the Company is a corporation existing and in good standing under the laws of the State of New Mexico and (b) the Debt Securities (i) have been (A) authorized by all necessary corporate action of the Company and (B) validly issued, executed and delivered by the Company under the laws of the State of New Mexico and (ii) do not violate the laws of the State of New Mexico, the Debt Securities, when

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authenticated by the Trustee in accordance with the terms of the Indenture and delivered against payment therefor in accordance with the terms of the Underwriting Agreement, will constitute valid and binding obligations of the Company under New York law, enforceable against the Company in accordance with their terms.

3. Assuming that the issuance and sale of the Debt Securities have been duly authorized and approved by an order of The New Mexico Public Regulation Commission and such order is final and in full force and effect on the date hereof, no consent, approval, authorization or order of, or filing with, any governmental agency or body or any court of the United States or the State of New York is required in connection with the execution, delivery or performance of the Indenture or the Underwriting Agreement or the issuance or sale of the Debt Securities by the Company to the Underwriters, except as may be required under (i) state securities or blue sky laws or (ii) the Securities Act of 1933 (the “Securities Act”), the Securities Exchange Act of 1934 or the Trust Indenture Act of 1939 (the “Trust Indenture Act”).

4. The (i) execution, delivery and performance of (A) the Indenture by the Company and (B) the Underwriting Agreement by the Company, (ii) issuance and sale of the Debt Securities by the Company and (iii) compliance with the terms and provisions thereof by the Company will not violate any law or regulation known to us to be generally applicable to transactions of this type, or any order or decree of any court, arbitrator or governmental agency that is binding upon the Company or its property or any agreement to which the Company is a party or bound (this opinion being limited (i) to those orders and decrees identified on Exhibit A attached hereto and to those agreements identified on Exhibit B attached hereto, and (ii) in that we express no opinion with respect to any violation (a) not readily ascertainable from the face of any such order, decree or agreement, (b) arising under or based upon any cross default provision insofar as it relates to a default under an agreement not identified on Exhibit B attached hereto, or (c) arising as a result of any violation of any agreement or covenant by failure to comply with any financial or numerical requirement requiring computation).

5. The Company is not required to register as an “investment company,” as such term is defined in the Investment Company Act of 1940.

6. The statements contained in the Pricing Disclosure Package and the Prospectus under the captions “Description of the Senior Unsecured Debt Securities” and “Supplemental Description of the Senior Notes,” insofar as such statements purport to summarize legal matters or provisions of documents referred to therein, present fair summaries of such legal matters and documents.

We have participated in the preparation of the Company’s registration statement on Form S-3 (Registration No. 333-153241) (the “Registration Statement”), the prospectus dated September 22, 2008 (the “Base Prospectus”), the preliminary prospectus supplement dated November 14, 2008 (together with the Base Prospectus, the “Preliminary Prospectus”), the information identified on Schedule II of the Underwriting Agreement (together with the Preliminary Prospectus, the “Pricing Disclosure Package”) and the prospectus supplement dated November 14, 2008 (together with the Base Prospectus, the “Prospectus”). From time to time, we have had discussions with certain officers, directors and employees of the Company and Xcel Energy Inc.,

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a Minnesota corporation and the parent company of the Company, with representatives of Deloitte & Touche LLP, the independent registered public accounting firm who examined the financial statements of the Company included or incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus, with the Underwriters and with counsel to the Underwriters concerning the information contained in or incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus and the proposed responses to various items in Form S-3. Based on the participation and discussions described above, we are of the view that the Registration Statement (including all information deemed to be part of and included therein pursuant to Rule 430B under the Securities Act, as of November 14, 2008 which is the date you have identified as the earlier of the date the Prospectus was first used or the date of the first contract of sale of any Debt Securities (such date, the “Effective Date”), and the Prospectus, as of its date, complied as to form in all material respects with the requirements of the Securities Act and the rules and regulations of the Securities and Exchange Commission (the “Commission”) thereunder, except that we express no view with respect to (i) the financial statements, financial schedules and other financial and statistical data included or incorporated by reference therein or (ii) the information referred to under the caption “Experts” as having been included or incorporated by reference therein on the authority of Deloitte & Touche LLP, as experts.

We have not independently verified and are not passing upon, and do not assume any responsibility for, the accuracy, completeness or fairness (except as and to the extent set forth in paragraph 6 above) of the information included or incorporated by reference in the Registration Statement, the Pricing Disclosure Package and the Prospectus. Based on the participation and discussions described above, however, no facts have come to our attention that cause us to believe that the Registration Statement (including all information deemed to be part thereof and included therein pursuant to Rule 430B under the Securities Act), as of the Effective Date, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein not misleading, that the Pricing Disclosure Package, as of 1:30 p.m. New York City time, on November 14, 2008 (which is the time that you have informed us was prior to the first contract of sale of any Debt Securities by the Underwriters), included any untrue statement of a material fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or that the Prospectus, as of its date and as of the date hereof, included or includes any untrue statement of a material fact or omitted or omits to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading, except that we express no view with respect to (i) the financial statements, financial schedules and other financial and statistical data included or incorporated by reference therein or (ii) the information referred to under the caption “Experts” as having been included or incorporated by reference therein on the authority of Deloitte & Touche LLP, as experts.

The Registration Statement has become effective under the Securities Act, and, to our knowledge, no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose are pending or threatened by the Commission.

The Indenture has been qualified under the Trust Indenture Act.

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The opinions and views set forth above are subject to the following limitations, qualifications and assumptions:

We have assumed, for purposes of the opinions and views expressed herein, the legal capacity of all natural persons executing documents, the genuineness of all signatures, the authenticity of original and certified documents and the conformity to original or certified copies of all copies submitted to us as conformed or reproduction copies. For the purposes of the opinions and views expressed herein, we also have assumed that the Trustee has authorized, executed, authenticated and delivered the documents or securities to which it is a party and that each of such documents or securities is the valid, binding and enforceable obligation of the Trustee.

As to facts material to our opinions and assumptions expressed herein, we have, with your consent, relied upon oral or written statements and representations of officers and other representatives of the Company and others, including the representations and warranties of the Company in the Underwriting Agreement. We have not independently verified such matters.

Our opinions set forth in paragraphs 1 and 2 above with respect to the enforceability of the documents or securities referred to in such opinions are subject to: (i) bankruptcy, insolvency, reorganization, fraudulent transfer and fraudulent conveyance, voidable preference, moratorium or other similar laws, and related regulations and judicial doctrines from time to time in effect relating to or affecting creditors’ rights and remedies generally; (ii) the effect of general principles of equity, whether enforcement is considered in a proceeding in equity or at law (including the possible unavailability of specific performance or injunctive relief), concepts of materiality, good faith and fair dealing and the discretion of the court before which any proceeding may be brought; (iii) the qualification that we express no opinion as to the validity, binding effect or enforceability of any provision in any document or security relating to indemnification, contribution or exculpation that may be violative of the public policy underlying any law, rule or regulation (including any federal or state securities law, rule or regulation); and (iv) the qualification that to the extent any opinion relates to the enforceability of the choice of New York law and choice of New York forum provisions of the documents or securities referred to therein, our opinion is rendered in reliance upon N.Y. Gen. Oblig. Law §§ 5-1401, 5-1402 (XxXxxxxx 2001) and N.Y. C.P.L.R. 327(b) (XxXxxxxx 2001), and that such enforceability may be limited by public policy considerations.

With respect to our opinions in paragraph 3, we express no opinion as to state securities or “blue sky” laws.

The statement above with respect to the effectiveness of the Registration Statement under the Securities Act is based solely on the Notice of Effectiveness relating to the Registration Statement as published by the Commission on its Web site on September 22, 2008. In addition, the statement above with respect to no stop order suspending the effectiveness of the Registration Statement having been issued and no proceedings for that purpose being pending or threatened by the Commission are based solely on telephone conversations involving lawyers in our firm actively engaged in our representation of the Company in this matter and members of the staff of the Commission, and such statement is made as of the time of such conversations.

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The opinions and views expressed herein are limited to (i) the federal securities laws of the United States of America and (ii) the laws of the State of New York, in each case as currently in effect, and we express no opinion or view as to the effect of the laws of any other jurisdiction on the opinions and views expressed herein. Our opinions and views are limited to those expressly set forth herein, and we express no opinion or view by implication.

This letter is furnished by us, to you, solely for the benefit of the Underwriters and solely with respect to the purchase of the Debt Securities from the Company by the Underwriters upon the understanding that we are not hereby assuming any professional responsibility to any other person whatsoever, and that this letter is not to be used, circulated, quoted or otherwise referred to for any other purpose.

	Very truly yours,


	XXXXX DAY

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SOUTHWESTERN PUBLIC SERVICE COMPANY (a New Mexico corporation) UNDERWRITING AGREEMENT $250,000,000 Series G Senior Notes, 8.75% due 2018

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