Public Service Co of Colorado Watch

EX-4.(B)(8)

from S-3ASR 11 pages Form of Supplemental Indenture No. [ ] From Northern States Power Company (A Minnesota Corporation) to [ ] Trustee Dated as of [ ] Supplemental to Indenture Dated as of [ ]

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EX-4.(B)(7)

from S-3ASR 50 pages Northern States Power Company (A Minnesota Corporation) and [ ] Trustee Form of Indenture Dated as of [ ] Providing for Issuance of Debt Securities Cross Reference Sheet Showing the Location in the Indenture of the Provisions Inserted Pursuant to Sections 310 Through 318(a) Inclusive of the Trust Indenture Act of 1939

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EX-4.(A)(15)

from S-3ASR 11 pages Form of Supplemental Indenture No. [ ] From Xcel Energy Inc. (A Minnesota Corporation) to [ ] Trustee Junior Subordinated Notes, Series Due [ ] Dated as of [ ] Supplemental to Junior Subordinated Indenture Dated as of [ ]

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EX-4.(A)(14)

from S-3ASR 58 pages Xcel Energy Inc. (A Minnesota Corporation) and [ ] Trustee Form of Junior Subordinated Indenture Dated as of [ ] Providing for Issuance of Junior Subordinated Debt Securities Cross Reference Sheet Showing the Location in the Indenture of the Provisions Inserted Pursuant to Sections 310 Through 318(a) Inclusive of the Trust Indenture Act of 1939

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EX-4.01

from 8-K 40 pages Recitals of the Company

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EX-4.01

from 8-K 25 pages Recitals of the Company

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EX-4.01

from 8-K 38 pages Recitals of the Company

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EX-4.01

from 8-K 64 pages Recitals of the Company

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EX-4.01

from 8-K 41 pages Recitals of the Company

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EX-4.01

from 8-K 65 pages Recitals of the Company

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EX-4.01

from 8-K 57 pages Recitals of the Company

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EX-4.01

from 8-K 36 pages Public Service Company of Colorado to U.S. Bank National Association, as Trustee Supplemental Indenture No. 28 Dated as of June 1, 2018 Supplemental to the Indenture Dated as of October 1, 1993 Establishing the Securities of Series Nos. 31 and 32 Designated 3.70% First Mortgage Bonds, Series No. 31 Due 2028, And

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EX-4.(D).(3)

from S-3ASR 164 pages Public Service Company of Colorado to Morgan Guaranty Trust Company of New York Trustee Indenture Dated as of October 1, 1993 Public Service Company of Colorado Reconciliation and Tie Between Trust Indenture Act of 1939 and Indenture, Dated as of October 1, 1993

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EX-4.(C).(3)

from S-3ASR 140 pages Supplemental and Restated Trust Indenture From Northern States Power Company (A Wisconsin Corporation) to First Wisconsin Trust Company Trustee Dated March 1, 1991 Securing First Mortgage Bonds of Northern States Power Company (Restating, Amending and Supplementing the Trust Indenture Dated April 1, 1947, as Previously Supplemented Through March 1, 1988) Cross-Reference Sheet Showing the Location in the Supplemental and Restated Trust Indenture of the Provisions Inserted Pursuant to Sections 310 Through 318(a) Inclusive of the Trust Indenture Act of 1939

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EX-4.(B).(7)

from S-3ASR 70 pages Northern States Power Company (A Minnesota Corporation) and Norwest Bank Minnesota, National Association Trustee Indenture Dated as of July 1, 1999 Providing for Issuance of Debt Securities Cross Reference Sheet Showing the Location in the Indenture of the Provisions Inserted Pursuant to Sections 310 Through 318(a) Inclusive of the Trust Indenture Act of 1939

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EX-4.(B).(3)

from S-3ASR 147 pages Supplemental and Restated Trust Indenture From Northern States Power Company to Harris Trust and Savings Bank Trustee Dated May 1, 1988 (Restating, Amending and Supplementing the Trust Indenture Dated February 1, 1937, as Previously Supplemented Through September 1, 1985) Cross-Reference Sheet Showing the Location in the Supplemental and Restated Trust Indenture of the Provisions Inserted Pursuant to Sections 310 Through 318(a) Inclusive of the Trust Indenture Act of 1939

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EX-4.01

from 8-K 29 pages Public Service Company of Colorado to U.S. Bank National Association, as Trustee Supplemental Indenture No. 27 Dated as of June 1, 2017 Supplemental to the Indenture Dated as of October 1, 1993 Establishing the Securities of Series No. 30 Designated 3.80% First Mortgage Bonds, Due 2047

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EX-4.01

from 8-K 24 pages Public Service Company of Colorado to U.S. Bank National Association, as Trustee Supplemental Indenture No. 26 Dated as of June 1, 2016 Supplemental to the Indenture Dated as of October 1, 1993 Establishing the Securities of Series No. 29 Designated 3.55% First Mortgage Bonds, Due 2046

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EX-4.01

from 8-K 22 pages Public Service Company of Colorado to U.S. Bank National Association, as Trustee Supplemental Indenture No. 25 Dated as of May 1, 2015 Supplemental to the Indenture Dated as of October 1, 1993 Establishing the Securities of Series No. 28 Designated 2.90% First Mortgage Bonds, Due 2025

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EX-4.01

from 8-K 21 pages Public Service Company of Colorado to U.S. Bank National Association, as Trustee Supplemental Indenture No. 24 Dated as of March 1, 2014 Supplemental to the Indenture Dated as of October 1, 1993 Establishing the Securities of Series No. 27 Designated 4.30% First Mortgage Bonds, Due 2044

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