Public Service Co of Colorado Sample Contracts

EXHIBIT 4.1 PUBLIC SERVICE COMPANY OF COLORADO 4.875 % First Collateral Trust Bonds, Series No. 11 due 2013 REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • June 11th, 2003 • Public Service Co of Colorado • Electric & other services combined • New York
Exhibit 10(e)(4) FORM OF SEVERANCE AGREEMENT BETWEEN PUBLIC SERVICE COMPANY OF COLORADO AND (EXECUTIVE NAME)
Severance Agreement • February 27th, 1996 • Public Service Co of Colorado • Electric & other services combined • Colorado
PUBLIC SERVICE COMPANY OF COLORADO TO
First Supplemental Indenture • July 22nd, 1999 • Public Service Co of Colorado • Electric & other services combined
as Trustee SUPPLEMENTAL INDENTURE ----------- Dated as of --------------------
Supplemental Indenture • April 14th, 2003 • Public Service Co of Colorado • Electric & other services combined
Exhibit 10(g)(4) AGREEMENT ---------
Termination Agreement • February 27th, 1996 • Public Service Co of Colorado • Electric & other services combined • Colorado
PUBLIC SERVICE COMPANY OF COLORADO TO
Supplemental Indenture • February 25th, 1997 • Public Service Co of Colorado • Electric & other services combined • New York
FORM OF
Underwriting Agreement • April 14th, 2003 • Public Service Co of Colorado • Electric & other services combined • New York
TO
Indenture • July 22nd, 1999 • Public Service Co of Colorado • Electric & other services combined • New York
SUPPLEMENTAL INDENTURE NO. [ ]
Supplemental Indenture • March 6th, 1998 • Public Service Co of Colorado • Electric & other services combined • New York
FORM OF
Underwriting Agreement • April 14th, 2003 • Public Service Co of Colorado • Electric & other services combined • New York
AS TRUSTEE TABLE OF CONTENTS
Indenture • March 31st, 1998 • Public Service Co of Colorado • Electric & other services combined • New York
PUBLIC SERVICE COMPANY OF COLORADO
Registration Rights Agreement • December 17th, 2002 • Public Service Co of Colorado • Electric & other services combined • New York

Public Service Company of Colorado, a corporation organized under the laws of the State of Colorado (the “Company”), proposes to issue and sell to certain purchasers (the “Initial Purchasers”) the Company’s 7.875% First Collateral Trust Bonds, Series No. 8 due 2012 (the “Securities”), upon the terms set forth in a purchase agreement dated as of September 18, 2002 (the “Purchase Agreement”), relating to the initial placement of the Securities (the “Initial Placement”). To induce the Initial Purchasers to enter into the Purchase Agreement and to satisfy a condition of your obligations thereunder, the Company agrees with you for your benefit and the benefit of the holders from time to time of the Securities (including the Initial Purchasers) (each a “Holder” and, together, the “Holders”), as follows:

FORM OF EXCHANGE AGENCY AGREEMENT
Exchange Agency Agreement • June 11th, 2003 • Public Service Co of Colorado • Electric & other services combined • Colorado
PUBLIC SERVICE COMPANY OF COLORADO (a Colorado corporation) FORM OF UNDERWRITING AGREEMENT (First Mortgage Bonds)
Underwriting Agreement • October 5th, 2010 • Public Service Co of Colorado • Electric & other services combined • New York
FIFTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of May 6, 2025 among NORTHERN STATES POWER COMPANY, a Minnesota corporation, as Borrower, The Several Lenders from Time to Time Parties Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent,...
Credit Agreement • May 7th, 2025 • Public Service Co of Colorado • Electric & other services combined • New York

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT (this “Agreement”), dated as of May 6, 2025 among NORTHERN STATES POWER COMPANY, a Minnesota corporation (the “Borrower”), the several banks and other financial institutions or entities from time to time parties to this Agreement (the “Lenders”), JPMORGAN CHASE BANK, N.A., as Administrative Agent, BANK OF AMERICA, N.A. and BARCLAYS BANK PLC, as Issuing Lenders and Syndication Agents, CITIBANK, N.A. and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Issuing Lenders and Documentation Agents, MORGAN STANLEY BANK, N.A., as an Issuing Lender and MIZUHO BANK, LTD., MORGAN STANLEY SENIOR FUNDING, INC. and MUFG BANK, LTD., as Documentation Agents.

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Guarantee Agreement • May 14th, 1998 • Public Service Co of Colorado • Electric & other services combined • Colorado
The Bank of New York (as Preferred Guarantee Trustee) Dated as of TABLE OF CONTENTS
Guarantee Agreement • March 6th, 1998 • Public Service Co of Colorado • Electric & other services combined • Colorado
TO
Indenture • March 31st, 1998 • Public Service Co of Colorado • Electric & other services combined • New York
TO
Indenture • May 14th, 1998 • Public Service Co of Colorado • Electric & other services combined • New York
FORM OF UNDERWRITING AGREEMENT (Senior Debt Securities)
Underwriting Agreement • February 6th, 2009 • Public Service Co of Colorado • Electric & other services combined • New York

Public Service Company of Colorado, a Colorado corporation (the “Company”), proposes to sell to the underwriters named in Schedule I hereto (the “Underwriters”), for whom you are acting as representatives (the “Representatives”), an aggregate $ principal amount of its % Series Senior Notes due (the “Debt Securities”) to be issued under its Indenture, dated as of July 1, 1999, from the Company to The Bank of New York Mellon Trust Company, N.A., as 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”).

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of May 6, 2025 among SOUTHWESTERN PUBLIC SERVICE COMPANY, as Borrower, The Several Lenders from Time to Time Parties Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent and as an Issuing...
Credit Agreement • May 7th, 2025 • Public Service Co of Colorado • Electric & other services combined • New York

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT (this “Agreement”), dated as of May 6, 2025 among SOUTHWESTERN PUBLIC SERVICE COMPANY, a New Mexico corporation (the “Borrower”), the several banks and other financial institutions or entities from time to time parties to this Agreement (the “Lenders”), JPMORGAN CHASE BANK, N.A., as Administrative Agent and an Issuing Lender, BANK OF AMERICA, N.A. and BARCLAYS BANK PLC, as Issuing Lenders and Syndication Agents, CITIBANK, N.A., as Issuing Lender and Documentation Agent, MORGAN STANLEY BANK, N.A., as Issuing Lender and MIZUHO BANK, LTD., MORGAN STANLEY SENIOR FUNDING, INC., MUFG BANK, LTD. and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Documentation Agents.

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of May 6, 2025 among XCEL ENERGY INC., as Borrower, The Several Lenders from Time to Time Parties Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent and Swingline Lender, BANK OF AMERICA,...
Credit Agreement • May 7th, 2025 • Public Service Co of Colorado • Electric & other services combined • New York

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT (this “Agreement”), dated as of May 6, 2025, among XCEL ENERGY INC., a Minnesota corporation (the “Borrower”), the several banks and other financial institutions or entities from time to time parties to this Agreement (the “Lenders”), JPMORGAN CHASE BANK, N.A., as Administrative Agent and Swingline Lender, BANK OF AMERICA, N.A., as an Issuing Lender and Syndication Agent, BARCLAYS BANK PLC, as an Issuing Lender and Syndication Agent, and CITIBANK, N.A., MIZUHO BANK, LTD., WELLS FARGO BANK, NATIONAL ASSOCIATION, as Issuing Lenders and Documentation Agents, and MORGAN STANLEY SENIOR FUNDING, INC. and MUFG BANK, LTD., as Documentation Agents.

FORM OF UNDERWRITING AGREEMENT (First Mortgage Bonds)
Underwriting Agreement • March 19th, 2007 • Public Service Co of Colorado • Electric & other services combined • New York

Public Service Company of Colorado, a Colorado corporation (the “Company”), proposes to sell to the underwriters named in Schedule II hereto (the “Underwriters”), for whom you are acting as representatives (the “Representatives”), its First Mortgage Bonds of the designation, with the terms and in the aggregate principal amount specified in Schedule I hereto (the “Bonds”) to be issued under its Indenture, dated as of October 1, 1993, from the Company to U.S. Bank Trust National Association, as successor trustee (the “Trustee”), as previously amended and supplemented and as to be amended and supplemented by a supplemental indenture relating to the Bonds (such Indenture as so supplemented and amended being hereinafter referred to as the “Indenture”). If the firm or firms listed in Schedule II hereto include only the firm or firms listed in Schedule I hereto, then the terms “Underwriters” and “Representatives,” as used herein, shall each be deemed to refer to such firm or firms.

Public Service Company of Colorado Underwriting Agreement
Underwriting Agreement • August 14th, 2007 • Public Service Co of Colorado • Electric & other services combined • New York

BNP Paribas Securities Corp. Credit Suisse Securities (USA) LLC J.P. Morgan Securities Inc. As Representatives of the several Underwriters listed in Schedule 1 hereto c/o J.P. Morgan Securities Inc. 270 Park Avenue New York, New York 10017

AS TRUSTEE
Supplemental Indenture • May 14th, 1998 • Public Service Co of Colorado • Electric & other services combined • New York
PUBLIC SERVICE COMPANY OF COLORADO, AS ISSUER
Indenture • March 6th, 1998 • Public Service Co of Colorado • Electric & other services combined • New York
FOURTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of September 19, 2022 among NORTHERN STATES POWER COMPANY, a Wisconsin corporation, as Borrower, The Several Lenders from Time to Time Parties Hereto, JPMORGAN CHASE BANK, N.A., as Administrative...
Credit Agreement • September 21st, 2022 • Public Service Co of Colorado • Electric & other services combined • New York

FOURTH AMENDED AND RESTATED CREDIT AGREEMENT (this “Agreement”), dated as of September 19, 2022 among NORTHERN STATES POWER COMPANY, a Wisconsin corporation (the “Borrower”), the several banks and other financial institutions or entities from time to time parties to this Agreement (the “Lenders”), JPMORGAN CHASE BANK, N.A., as Administrative Agent and as an Issuing Lender, BANK OF AMERICA, N.A., as a Syndication Agent, BARCLAYS BANK PLC, as a an Issuing Lender and a Syndication Agent, and CITIBANK, N.A., MUFG BANK, LTD. and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Documentation Agents.

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT dated as of May 6, 2025 among NORTHERN STATES POWER COMPANY, a Wisconsin corporation, as Borrower, The Several Lenders from Time to Time Parties Hereto, JPMORGAN CHASE BANK, N.A., as Administrative Agent and...
Credit Agreement • May 7th, 2025 • Public Service Co of Colorado • Electric & other services combined • New York

FIFTH AMENDED AND RESTATED CREDIT AGREEMENT (this “Agreement”), dated as of May 6, 2025 among NORTHERN STATES POWER COMPANY, a Wisconsin corporation (the “Borrower”), the several banks and other financial institutions or entities from time to time parties to this Agreement (the “Lenders”), JPMORGAN CHASE BANK, N.A., as Administrative Agent and as an Issuing Lender, BANK OF AMERICA, N.A., as a Syndication Agent, BARCLAYS BANK PLC, as a an Issuing Lender and a Syndication Agent, MIZUHO BANK, LTD., as an Issuing Lender and a Documentation Agent, and CITIBANK, N.A., MORGAN STANLEY SENIOR FUNDING, INC., MUFG BANK, LTD. and WELLS FARGO BANK, NATIONAL ASSOCIATION, as Documentation Agents.

FINANCING AGREEMENT between ADAMS COUNTY, COLORADO and PUBLIC SERVICE COMPANY OF COLORADO Dated as of August 1, 2005 relating to Adams County, Colorado Pollution Control Refunding Revenue Bonds, 2005 Series A (Public Service Company of Colorado Project)
Financing Agreement • August 24th, 2005 • Public Service Co of Colorado • Electric & other services combined • Colorado

THIS FINANCING AGREEMENT, dated as of August 1, 2005 (this “Agreement”), between ADAMS COUNTY, COLORADO, a public body corporate and politic organized and existing as a county within the State of Colorado under the Constitution and laws of such State (the “County”), and PUBLIC SERVICE COMPANY OF COLORADO, a corporation organized and existing under the laws of the State of Colorado (the “Company”),

ACCEPTANCE, ASSIGNMENT AND ASSUMPTION AGREEMENT by and among Public Service Company of Colorado and dated as of November 8, 2010
Acceptance, Assignment and Assumption Agreement • November 8th, 2010 • Public Service Co of Colorado • Electric & other services combined • New York

ACCEPTANCE, ASSIGNMENT AND ASSUMPTION AGREEMENT dated as of November 8, 2010 (this “Agreement”) among Public Service Company of Colorado (the “Company”), U.S. Bank Trust National Association (“Trustee”) and U.S. Bank National Association (“Successor Trustee”).