Common use of ADDENDUM Clause in Contracts

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION By: /s/ Xxxxx X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION By: /s/ Xxxxx X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Dated as of April 21, 2005.

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION BANK OF AMERICA, N.A. By: /s/ Xxxxx Xxxxxxxx X. Xxxxx Xxxxxxxxxx Name: Xxxxx Xxxxxxxx X. Xxxxx Xxxxxxxxxx Title: Senior Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Mizuho Corporate Bank Ltd. By: /s/ Xxxxx X. Xxxxx Xxxx Xxxxxxx Name: Xxxxx X. Xxxxx Xxxx Xxxxxxx Title: Senior Vice President Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION SUMITOMO MITSUI BANKING CORPORATION By: /s/ Xxxxx X. Xxxxx Xxxx Name: Xxxxx X. Xxxxx Xxxx Title: Senior Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION KBC BANK N.V. By: /s/ Xxxxx X. Xxxxx Xxxx Xxxxxx Name: Xxxxx X. Xxxxx Xxxx Xxxxxx Title: Vice President By: /s/ Xxxxxx Xxxxxxxx Name: Xxxxxx Xxxxxxxx Title: First Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION CREDIT SUISSE FIRST BOSTON, ACTING THROUGH ITS CAYMAN ISLANDS BRANCH By: /s/ Xxxxx X. Xxxxx Xx Name: Xxxxx X. Xxxxx Xx Title: Vice President Director By: /s/ Xxxxxx Xxxxxxx Name: Xxxxxx Xxxxxxx Title: Associate Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Citibank, N.A. By: /s/ Xxxxx X. Xxxxxxx Xxxxx Name: Xxxxx X. Xxxxxxx Xxxxx Title: Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION HSBC Bank USA, National Association By: /s/ Xxxxx X. Xxxxx Xxxx Aldeanueva Name: Xxxxx X. Xxxxx Xxxx Aldeanueva Title: Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION XXXXXXX XXXXX BANK USA By: /s/ Xxxxx X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Director Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION XXXXXXX STREET COMMITMENT CORPORATION (Recourse only to assets of Xxxxxxx Street Commitment Corporation) By: /s/ Xxxxx X. Xxxxx Manda D’Agata Name: Xxxxx X. Xxxxx Manda D’Agata Title: Assistant Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Commerzbank AG, New York and Grand Cayman Branches By: /s/ Xxxxx X. Xxxxx Xxxxxx Xxxxxxxx Name: Xxxxx X. Xxxxx Xxxxxx Xxxxxxxx Title: Senior Vice President By: /s/ Xxxxxx Xxxxxxx Name: Xxxxxx Xxxxxxx Title: Vice President Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION XXXXXXX STREET COMMITMENT CORPORATION (Recourse only to assets of Xxxxxxx Street Commitment Corporation) By: /s/ Xxxxx X. Xxxxx Manda D’Agata Name: Xxxxx X. Xxxxx Manda D’Agata Title: Assistant Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION SUMITOMO MITSUI BANKING CORPORATION By: /s/ Xxxxx X. Xxxxx Xxxx Name: Xxxxx X. Xxxxx Xxxx Title: Senior Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Xxxxxx Xxxxxxx Bank By: /s/ Xxxxx X. Xxxxx Xxxxxx Xxxxxx Name: Xxxxx X. Xxxxx Xxxxxx Xxxxxx Title: Vice President Xxxxxx Xxxxxxx Bank Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION XXXXXX BROTHERS BANK, FSB By: /s/ Xxxxx Xxxx X. Xxxxx Xxxxxx Name: Xxxxx Xxxx X. Xxxxx Xxxxxx Title: Senior Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Amarillo National Bank By: /s/ Xxxxx X. Xxxxx Xxxxxxx Name: Xxxxx X. Xxxxx Xxxxxxx Title: Executive Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION BARCLAYS BANK PLC By: /s/ Xxxxx Sydney X. Xxxxx Xxxxxx Name: Xxxxx Sydney X. Xxxxx Xxxxxx Title: Vice President Director Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION KBC BANK N.V. By: /s/ Xxxxx X. Xxxxx Xxxx Xxxxxx Name: Xxxxx X. Xxxxx Xxxx Xxxxxx Title: Vice President By: /s/ Xxxxxx Xxxxxxxx Name: Xxxxxx Xxxxxxxx Title: First Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Amarillo National Bank. By: /s/ Xxxxx X. Xxxxx Xxxxxxx Name: Xxxxx X. Xxxxx Xxxxxxx Title: Executive Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Xxxxxx Xxxxxxx Bank By: /s/ Xxxxx X. Xxxxx Xxxxxx Xxxxxx Name: Xxxxx X. Xxxxx Xxxxxx Xxxxxx Title: Vice President Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Mizuho Corporate Bank Ltd. By: /s/ Xxxxx X. Xxxxx Xxxx Xxxxxxx Name: Xxxxx X. Xxxxx Xxxx Xxxxxxx Title: Senior Vice President Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION HSBC Bank USA, National Association By: /s/ Xxxxx X. Xxxxx Xxxx Aldeanueva Name: Xxxxx X. Xxxxx Xxxx Aldeanueva Title: Vice President Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION XXXXXXX XXXXX BANK USA By: /s/ Xxxxx X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Director Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION BNP Paribas By: /s/ Xxxxxxx X. XxXxxxx Name: Xxxxxxx X. XxXxxxx Title: Managing Director By: /s/ Xxxxx X. Xxxxx Xxxxxxx Name: Xxxxx X. Xxxxx Xxxxxxx Title: Vice President Managing Director Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION Xxxxxx Xxxxxxx Financing, Inc. By: /s/ Xxxxx X. Xxxxx Xxxxxxx Name: Xxxxx Cahal X. Xxxxx Xxxxxxx Title: Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION BANK OF AMERICA, N.A. By: /s/ Xxxxx Xxxxxxxx X. Xxxxx Xxxxxxxxxx Name: Xxxxx Xxxxxxxx X. Xxxxx Xxxxxxxxxx Title: Senior Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION The Bank of Nova Scotia By: /s/ Xxxxx X. Xxxxx Xxxxxx Name: Xxxxx X. Xxxxx Xxxxxx Title: Vice President Managing Director Dated as of April 2119, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION XXXXXX BROTHERS BANK, FSB By: /s/ Xxxxx Xxxx X. Xxxxx Xxxxxx Name: Xxxxx Xxxx X. Xxxxx Xxxxxx Title: Senior Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION The Bank of Tokyo-Mitsubishi, Ltd By: /s/ Xxxxx Xxxxxxx X. Xxxxx Xxxxxxx Name: Xxxxx Xxxxxxx X. Xxxxx Xxxxxxx Title: Vice President VP & Manager Dated as of April 2120, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION By: /s/ Xxxxx X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Dated as of April 21, 2005.

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation Southwestern Public Service Company (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION By: /s/ Xxxxx X. Xxxxx Name: Xxxxx X. Xxxxx Title: Vice President Dated as of April 21, 2005

ADDENDUM. The undersigned Lender (i) agrees to all of the provisions of the Credit Agreement, dated as of April 21, 2005 (the “Credit Agreement”), among Northern States Power Company, a Minnesota corporation (the “Borrower”), the Lenders party thereto, the Documentation Agents and Syndication Agents named therein and JPMorgan Chase Bank, N.A., as Administrative Agent, and (ii) becomes a party thereto, as a Lender, with obligations applicable to such Lender thereunder, including, without limitation, the obligation to make extensions of credit to the Borrower in an aggregate principal amount not to exceed the amount of its Revolving Commitment as set forth opposite the undersigned Lender’s name in Schedule 1.1A to the Credit Agreement, as such amount may be changed from time to time as provided in the Credit Agreement. Unless otherwise defined herein, terms defined in the Credit Agreement and used herein shall have the meanings given to them in the Credit Agreement. KEYBANK NATIONAL ASSOCIATION The Bank of Nova Scotia By: /s/ Xxxxx X. Xxxxx Xxxxxx Name: Xxxxx X. Xxxxx Xxxxxx Title: Vice President Managing Director Dated as of April 2119, 2005