Multi-Utilities Industry Mortgage Agreements

First Mortgage Bond, Series S, 5.69%, due August 21, 2054, issued by Unitil Energy Systems, Inc. to Metlife Reinsurance Company of Hamilton, Ltd (UNITIL CORP, Filed With SEC on August 27, 2024)

Mortgage and Security Agreement dated December 18, 2020 Unitil Realty Corp. and TD Bank, N.A (UNITIL CORP, Filed With SEC on February 2, 2021)

First Mortgage Bond, Series R, 3.58%, due September 15, 2040, issued by Unitil Energy Systems, Inc. to CUDD AND CO (as nominee for Symetra Life Insurance Company) (UNITIL CORP, Filed With SEC on September 21, 2020)

First Mortgage Bond, Series Q, 4.18%, due November 30, 2048, issued by Unitil Energy Systems, Inc. to United of Omaha Life Insurance Company (UNITIL CORP, Filed With SEC on December 4, 2018)

Officers Certificate, dated as of February 28, 2018, setting forth the form, terms and provisions of the Twenty-Eighth Series of General Mortgage Bonds (CenterPoint Energy, Filed With SEC on May 4, 2018)

===================================================================== CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC TO THE BANK OF NEW YORK MELLON TRUST COMPANY, NATIONAL ASSOCIATION... (CenterPoint Energy, Filed With SEC on February 28, 2017)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 ________________________ Fifty-ninth Supplemental Indenture... (Avista Corporation, Filed With SEC on December 16, 2016)

===================================================================== CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC TO THE BANK OF NEW YORK MELLON TRUST COMPANY, NATIONAL ASSOCIATION... (CenterPoint Energy, Filed With SEC on November 4, 2016)

===================================================================== CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC TO THE BANK OF NEW YORK MELLON TRUST COMPANY, NATIONAL ASSOCIATION... (CenterPoint Energy, Filed With SEC on August 5, 2016)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 ________________________ Fifty-eighth Supplemental Indenture... (Avista Corporation, Filed With SEC on December 18, 2015)

DESCRIPTION OF FIRST MORTGAGE BONDS, 4.26% SERIES DUE 2040 (NorthWestern Corporation, Filed With SEC on October 5, 2015)

CHEYENNE LIGHT, FUEL AND POWER COMPANY TO WELLS FARGO BANK, NATIONAL ASSOCIATION FIRST SUPPLEMENTAL INDENTURE Dated as of September 3, 2009 Creating Two Issues of First Mortgage... (Black Hills Corporation, Filed With SEC on October 2, 2014)

===================================================================== CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC TO THE BANK OF NEW YORK MELLON TRUST COMPANY, NATIONAL ASSOCIATION... (CenterPoint Energy, Filed With SEC on May 1, 2014)

Bond Delivery Agreement ______________ AVISTA CORPORATION to UNION BANK, N.A., as Administrative Agent _______________ Dated as of April 18, 2014 _______________ Relating to First... (Avista Corporation, Filed With SEC on April 22, 2014)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 ________________________ Fifty-sixth Supplemental Indenture... (Avista Corporation, Filed With SEC on April 22, 2014)

NorthWestern Corporation $50,000,000 First Mortgage Bonds, 4.85% Series, due December 19, 2043 ______________ Bond Purchase Agreement ______________ Dated as of December 19, 2013 (NorthWestern Corporation, Filed With SEC on December 23, 2013)

NorthWestern Corporation $35,000,000 First Mortgage Bonds, 3.99% Series, due December 19, 2028 $15,000,000 First Mortgage Bonds, 4.85% Series, due December 19, 2043... (NorthWestern Corporation, Filed With SEC on December 23, 2013)

ARTICLE I. DESCRIPTION OF FIRST MORTGAGE BONDS, 4.85% SERIES DUE 2043 (NorthWestern Corporation, Filed With SEC on December 23, 2013)

Bond Delivery Agreement ______________ AVISTA CORPORATION to UNION BANK, N.A., as Administrative Agent _______________ Dated as of August 14, 2013 _______________ Relating to... (Avista Corporation, Filed With SEC on August 16, 2013)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 ________________________ Fifty-fifth Supplemental Indenture... (Avista Corporation, Filed With SEC on August 16, 2013)

$325,000,000 CONSUMERS ENERGY COMPANY 3.375% First Mortgage Bonds due 2023 UnderwritingAgreement (CONSUMERS ENERGY CO, Filed With SEC on August 9, 2013)

$425,000,000 CONSUMERS ENERGY COMPANY 3.95% First Mortgage Bonds due 2043 UnderwritingAgreement (CONSUMERS ENERGY CO, Filed With SEC on May 17, 2013)

===================================================================== CENTERPOINT ENERGY HOUSTON ELECTRIC, LLC TO THE BANK OF NEW YORK MELLON TRUST COMPANY, NATIONAL ASSOCIATION... (CenterPoint Energy, Filed With SEC on February 27, 2013)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 Fifty-fourth Supplemental Indenture Providing among other... (Avista Corporation, Filed With SEC on December 4, 2012)

CONSUMERS ENERGY COMPANY $51,500,000 3.19% FIRST MORTGAGE BONDS DUE 2024 $35,500,000 3.39% FIRST MORTGAGE BONDS DUE 2027 $263,000,000 4.31% FIRST MORTGAGE BONDS DUE 2042 BOND... (CONSUMERS ENERGY CO, Filed With SEC on July 13, 2012)

$375,000,000 CONSUMERS ENERGY COMPANY 2.85% First Mortgage Bonds due 2022 UnderwritingAgreement (CONSUMERS ENERGY CO, Filed With SEC on May 8, 2012)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 Fifty-third Supplemental Indenture Providing among other... (Avista Corporation, Filed With SEC on December 16, 2011)

Bond Delivery Agreement AVISTA CORPORATION to UNION BANK, N.A., as Administrative Agent Dated as ofFebruary 11, 2011 Relating to First Mortgage Bonds, Collateral Series 2011A (Avista Corporation, Filed With SEC on February 16, 2011)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 Fifty-firstSupplemental Indenture Providing among other things... (Avista Corporation, Filed With SEC on February 16, 2011)

AVISTA CORPORATION TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 FiftiethSupplemental Indenture Providing among other things... (Avista Corporation, Filed With SEC on January 4, 2011)

CONSUMERS ENERGY COMPANY $50,000,000 2.60% First Mortgage Bonds due 2015 $100,000,000 3.21% First Mortgage Bonds due 2017 $100,000,000 3.77% First Mortgage Bonds due 2020... (CONSUMERS ENERGY CO, Filed With SEC on September 30, 2010)

ARTICLE I. DESCRIPTION OF FIRST MORTGAGE BONDS, 5.01% SERIES DUE 2025 (NorthWestern Corporation, Filed With SEC on July 29, 2010)

NorthWestern Corporation $64,000,000 First Mortgage Bonds, 5.01% Series due May 1, 2025 ______________ Bond Purchase Agreement ______________ Dated April 26, 2010 (NorthWestern Corporation, Filed With SEC on April 30, 2010)

NorthWestern Corporation $161,000,000 First Mortgage Bonds, 5.01% Series due May 1, 2025 ______________ Bond Purchase Agreement ______________ Dated April 26, 2010 (NorthWestern Corporation, Filed With SEC on April 30, 2010)

UNITILENERGY SYSTEMS, INC. $15,000,000 AGGREGATEPRINCIPAL AMOUNT OF FIRST MORTGAGE BONDS, SERIES P, DUE MARCH 2, 2020 BONDPURCHASE AGREEMENT DATED AS OFMARCH 2, 2010 (UNITIL CORP, Filed With SEC on March 8, 2010)

TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 Forty-sixth SupplementalIndenture Providing among other things for a series of... (Avista Corporation, Filed With SEC on September 23, 2009)

Officers Certificate date January 20, 2009 setting forth the form, terms and provisions of the Twenty-First Series of General Mortgage Bonds (CenterPoint Energy, Filed With SEC on February 25, 2009)

TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 Forty-third SupplementalIndenture Providing among other things for a series of... (Avista Corporation, Filed With SEC on December 1, 2008)

TO CITIBANK, N.A. As Successor Trustee under Mortgage and Deed of Trust, dated as of June 1, 1939 Forty-second SupplementalIndenture Providing among other things for a Series of... (Avista Corporation, Filed With SEC on April 8, 2008)

AVISTA CORPORATION First Mortgage Bonds, 5.95% Series due 2018 (Avista Corporation, Filed With SEC on March 31, 2008)

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Mortgage Agreements in the Multi-Utilities Industry