NORTHERN STATES POWER CO Contracts & Agreements

Supplemental Indenture dated as of May 13, 2024 between Northern States Power Company and U.S. Bank Trust Company, National Association, as successor Trustee, creating 5.65% First... (Filed With SEC on May 16, 2024)

Supplemental Trust Indenture dated as of February 1, 2024 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on February 29, 2024)

Supplemental Indenture dated as of May 10, 2023 between Northern States Power Company and U.S. Bank Trust Company, National Association, as successor Trustee, creating 5.30% First... (Filed With SEC on May 10, 2023)

Bond Purchase Agreement, dated May 10, 2023, among Northern States Power Company and the several purchasers listed in Schedule B thereto (Filed With SEC on May 10, 2023)

Supplemental Trust Indenture dated as of May 1, 2023 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on May 8, 2023)

Bond Purchase Agreement, dated July 15, 2022, among Northern States Power Company and the several purchasers listed in Schedule B thereto (Filed With SEC on July 15, 2022)

Supplemental Indenture dated as of July 15, 2022 between Northern States Power Company and U.S. Bank Trust Company, National Association, as successor Trustee, creating 4.86%... (Filed With SEC on July 15, 2022)

Supplemental Trust Indenture dated as of May 1, 2022 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on May 9, 2022)

Bond Purchase Agreement, dated July 19, 2021, among Northern States Power Company and the several purchasers listed in Schedule B thereto (Filed With SEC on July 20, 2021)

Supplemental Indenture dated as of July 19, 2021 between Northern States Power Company and U.S. Bank National Association, as successor Trustee, creating 2.82% First Mortgage... (Filed With SEC on July 20, 2021)

Supplemental Indenture dated as of May 18, 2020 between Northern States Power Company and U.S. Bank National Association, as successor Trustee, creating 3.05% First Mortgage... (Filed With SEC on May 26, 2020)

Supplemental Trust Indenture dated as of September 1, 2019 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee,... (Filed With SEC on September 10, 2019)

Supplemental Indenture dated as of September 1, 2018 between Northern States Power Company and U.S. Bank National Association, as successor Trustee, creating 4.20% First Mortgage... (Filed With SEC on September 12, 2018)

Supplemental Indenture dated as of November 1, 2017 between Northern States Power Company and U.S. Bank National Association, as successor Trustee, creating 3.75% First Mortgage... (Filed With SEC on December 4, 2017)

Supplemental Trust Indenture dated as of September 1, 2017 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee,... (Filed With SEC on September 13, 2017)

Supplemental Trust Indenture dated as of August 1, 2015 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on August 11, 2015)

SUPPLEMENTAL TRUST INDENTURE FROM NORTHERN STATES POWER COMPANY (A WISCONSIN CORPORATION) TO U.S. BANK NATIONAL ASSOCIATION TRUSTEE (Filed With SEC on June 23, 2014)

Supplemental Trust Indenture dated as of May 1, 2014 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on May 13, 2014)

Supplemental Trust Indenture dated as of May 1, 2013 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on May 20, 2013)

Supplemental Indenture dated as of October 1, 2012 between Northern States Power Company and U.S. Bank National Association, as successor Trustee, creating $100,000,000 principal... (Filed With SEC on October 10, 2012)

Supplemental Indenture dated as of August 1, 2012 between Northern States Power Company and The Bank of New York Mellon Trust Company, N.A., as successor Trustee, creating... (Filed With SEC on August 13, 2012)

SUPPLEMENTALTRUST INDENTURE FROM NORTHERNSTATES POWER COMPANY (A MINNESOTA CORPORATION) TO THE BANK OFNEW YORK MELLON TRUST COMPANY, N.A. DATEDAUGUST 1, 2010 SUPPLEMENTALTO TRUST... (Filed With SEC on August 11, 2010)

SUPPLEMENTAL TRUST INDENTURE FROM NORTHERN STATES POWER COMPANY (A MINNESOTA CORPORATION) TO THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. DATEDNOVEMBER 1, 2009 SUPPLEMENTALTO... (Filed With SEC on November 16, 2009)

NORTHERNSTATES POWER COMPANY (a Wisconsincorporation) UNDERWRITINGAGREEMENT $200,000,0006.375% First Mortgage Bonds, Series due September 1, 2038 (Filed With SEC on September 9, 2008)

SUPPLEMENTAL TRUST INDENTURE FROM NORTHERN STATES POWER COMPANY (A WISCONSIN CORPORATION) TO U.S. BANK NATIONAL ASSOCIATION (formerly known as FIRSTAR BANK NATIONAL ASSOCIATION)... (Filed With SEC on September 9, 2008)

SUPPLEMENTAL TRUST INDENTURE FROM NORTHERN STATES POWER COMPANY (A MINNESOTA CORPORATION) TO THE BANK OF NEW YORK TRUST COMPANY, N.A. DATED MARCH 1, 2008 SUPPLEMENTAL TO TRUST... (Filed With SEC on March 17, 2008)

NORTHERNSTATES POWER COMPANY (a Minnesotacorporation) UNDERWRITINGAGREEMENT 5.25%First Mortgage Bonds, Series due March 1, 2018 (Filed With SEC on March 17, 2008)

NORTHERN STATES POWER COMPANY (a Minnesotacorporation) UNDERWRITINGAGREEMENT 6.20%First Mortgage Bonds, Series due July 1, 2037 (Filed With SEC on June 25, 2007)

SUPPLEMENTALTRUST INDENTURE FROM NORTHERNSTATES POWER COMPANY (A MINNESOTA CORPORATION) TO BNY MIDWEST TRUST COMPANY DATED JUNE 1, 2007 SUPPLEMENTALTO TRUST INDENTURE DATED... (Filed With SEC on June 25, 2007)

SUPPLEMENTAL TRUST INDENTURE FROM NORTHERN STATES POWERCOMPANY (A MINNESOTA CORPORATION) TO BNY MIDWEST TRUST COMPANY DATED MAY 1, 2006 SUPPLEMENTAL TO TRUST INDENTURE DATED... (Filed With SEC on May 22, 2006)

NORTHERN STATES POWER COMPANY (a Minnesota corporation) UNDERWRITING AGREEMENT 6.25% First Mortgage Bonds, Series due June 1,2036 (Filed With SEC on May 22, 2006)

SUPPLEMENTAL TRUST INDENTURE FROM NORTHERN STATES POWER COMPANY (A MINNESOTA CORPORATION) TO BNY MIDWEST TRUST COMPANY DATED JULY 1, 2005 SUPPLEMENTAL TO TRUST INDENTURE DATED... (Filed With SEC on July 18, 2005)

NORTHERN STATES POWER COMPANY (a Minnesota corporation) UNDERWRITING AGREEMENT 5.25% First Mortgage Bonds, Series due July 15,2035 (Filed With SEC on July 18, 2005)

EX-10.01 Restated Interchange Agreement (Filed With SEC on January 21, 2004)

EX-4.01 Credit Agreement (Filed With SEC on August 14, 2003)

EX-4.04 Credit Agreement (Filed With SEC on August 14, 2003)

EX-4.03 Credit Agreement (Filed With SEC on August 14, 2003)

EX-4.02 Credit Agreement (Filed With SEC on August 14, 2003)

EX-4.01 Supplemental Indenture (Filed With SEC on August 6, 2003)

EX-1.01 Underwriting Agreement (Filed With SEC on August 6, 2003)

EX-4.01 Supplemental Indenture (Filed With SEC on May 15, 2003)

EX-4.02 Supplemental Indenture (Filed With SEC on May 15, 2003)

Ex-4.1 Registration Rights Agreement (Filed With SEC on November 27, 2002)

EX-4.02 Supplemental Indenture dated Sept 15, 2002 (Filed With SEC on November 14, 2002)

EX-4.06 Supplemental Indenture dated July 1, 2002 (Filed With SEC on November 14, 2002)

EX-4.01 Supplemental Indenture dated Aug. 15, 2002 (Filed With SEC on November 14, 2002)

EX-4.05 Supplemental Indenture dated June 1, 2002 (Filed With SEC on November 14, 2002)

EX-4.04 Supplemental Indenture dated Sept 15, 2002 (Filed With SEC on November 14, 2002)

EX-4.03 Supplemental Indenture dated Aug. 15, 2002 (Filed With SEC on November 14, 2002)

EX-1.01 Underwriting Agreement (Filed With SEC on July 10, 2002)

EX-4.01 Supplemental Indenture No. 3 (Filed With SEC on July 10, 2002)

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NORTHERN STATES POWER CO Contracts & Agreements