Common use of Notices and Communications Clause in Contracts

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing and sent to the addresses stated below or at any other such address(es) as may be designated in writing: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 Xxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 Date: December 01, 2005 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx X. Xxxxxxxxx /s/ XXXXXX X. XXXXXXX Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Commercial Services Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 3, 2014 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 3, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable October 30, 2014 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 303,900 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 303,900 974 04/01/2016 10/31/2016 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 FORTUNE LAKE 303,900 974 04/01/2015 10/31/2015 FORTUNE LAKE 0 974 11/01/2015 03/31/2016 FORTUNE LAKE 303,900 974 04/01/2016 10/31/2016 FORTUNE LAKE 0 974 QuickLinks Exhibit 99.15

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership ANR PIPELINE COMPANY Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP ANR PIPELINE COMPANY By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxx Xxxxxxxx /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Transportation Accounting and Contracts Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByJanuary 11, 2017 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print January 11, 2017 APPENDIX A Contract Identification FT5840 Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01January 09, 2005 2017 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 02/01/2017 03/31/2017 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 02/01/2017 03/31/2017 XXXXXX 294,211 974 04/01/2017 10/31/2017 XXXXXX 0 974 11/01/2017 03/31/2018 SOUTH XXXXXXX 115,771 974 11/01/2017 03/31/2018 XXXXXX 202,464 974 04/01/2018 10/31/2018 XXXXXX 0 974 02/01/2017 03/31/2017 XXXXXXX 294,211 974 04/01/2017 10/31/2017 XXXXXXX 0 974 11/01/2017 03/31/2018 XXXXXXX 202,464 974 04/01/2018 10/31/2018 XXXXXXX 0 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited Partnership Commercial Services 000 Xxxxx Xxxxxx Xxxxxxx, XX 00000-0000 TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership X0X 0X0 Xxxxxx Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 Xxxxxx AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx X. Xxxxxxx Xxxxxx X. Xxxxxxx Director, Commercial Services /s/ Xxxxx Xxxxxx Xxxxx Xxxxxx Xxxxx By: Vice President, Commercial—East Canadian Pipelines /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxxxxxxx Xxxx Please Print Title: Xxxxxxxxx Senior Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print Canadian and Eastern US Pipelines APPENDIX A Contract Identification FT5840 FT16128 Date: December 01March 09, 2005 2011 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 974 11/01/2006 10/31/2011 11/01/2011 10/31/2014 ST. CLAIR 105,965 974313,727 974 11/01/2011 10/31/2014 XXXXXXX 313,727 974 QuickLinks Exhibit 99.11

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: XXX XXXXXXXX Xxx Xxxxxxxx Director, Transportation Accounting and Contracts /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByJanuary 11, 2017 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 January 11, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December January 31, 0000 Xxxxxxxxxx Xxxxxxxx Dated: November 01, 2005 Supersedes Appendix Dated: Not Applicable 2016 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 XXXXXX 178,440 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2015 03/31/2016 XXXXXX 178,440 974 04/01/2016 10/31/2016 XXXXXX 0 974 11/01/2016 01/31/2017 XXXXXX 178,440 974 11/01/2014 03/31/2015 XXXXXXX 105,965 178,440 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 178,440 974 04/01/2016 10/31/2016 XXXXXXX 0 974 11/01/2016 01/31/2017 XXXXXXX 178,440 974 QuickLinks Exhibit 99.8

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxxxx Director, Commercial Services /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 14, 2015 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 14, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable November 01, 2015 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 303,900 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 303,900 974 04/01/2016 10/31/2016 SOUTH XXXXXXX 0 974 11/01/2016 03/31/2017 SOUTH XXXXXXX 303,900 974 04/01/2017 10/31/2017 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 FORTUNE LAKE 303,900 974 04/01/2015 10/31/2015 FORTUNE LAKE 0 974 11/01/2015 03/31/2016 FORTUNE LAKE 303,900 974 04/01/2016 10/31/2016 FORTUNE LAKE 0 974 11/01/2016 03/31/2017 FORTUNE LAKE 303,900 974 04/01/2017 10/31/2017 FORTUNE LAKE 0 974 QuickLinks Exhibit 99.11

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership ByANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx /s/ XXXXXX X. XXXXXXXXX Xxxxxx X. Xxxxxxxxx Director – Commercial Services ANR Pipeline Company Dated: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx ByOctober 31, 2014 Dated: /s/ Xxxxx Xxxx Title: DirectorOctober 31, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01October 30, 2005 2014 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 101,300 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 101,300 974 04/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 101,300 974 04/01/2015 10/31/2015 XXXXXXX 0 974 QuickLinks Exhibit 99.12

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx X. Xxxxxxxxx Director – Commercial Services /s/ XXXXXX X. XXXXXXX Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 14, 2015 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 14, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable November 01, 2015 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 115,771 974 11/01/2015 03/31/2016 XXXXXX 115,771 974 04/01/2016 10/31/2016 XXXXXX 0 974 11/01/2016 03/31/2017 SOUTH XXXXXXX 115,771 974 11/01/2016 03/31/2017 XXXXXX 115,771 974 04/01/2017 10/31/2017 XXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 115,771 974 04/01/2016 10/31/2016 XXXXXXX 0 974 11/01/2016 03/31/2017 XXXXXXX 115,771 974 04/01/2017 10/31/2017 XXXXXXX 0 974 QuickLinks Exhibit 99.9

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Commercial Services Xxxxxxx, XX 00000 Canada 00000-0000 000 Xxxxxxxxx Xx., Xxxxx 000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase BankXxxxxxx, Detroit, MI ABA No: 000000000 Account No: 07308XX 00000-43 0000 AGREED TO BY: GREAT LAKES GAS TRANSMISSION ANR PIPELINE COMPANY LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxx Xxxxxxxx By: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx X. Xxxxxxx Xxx Xxxxxxxx Signature Title: Director, Transportation Accounting and Contracts Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 FTI8659 Date: December 01March 07, 2005 2017 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Maximum Allowable Operating Pressure Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 04/01/2017 10/31/2017 XXXXXX 0 974 11/01/2017 03/31/2018 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 11/01/2017 03/31/2018 XXXXXX 202,464 974 04/01/2018 10/31/2018 XXXXXX 0 974 04/01/2017 10/31/2017 XXXXXXX 0 974 11/01/2017 03/31/2018 XXXXXXX 202,464 974 04/01/2018 10/31/2018 XXXXXXX 0 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing and sent to the addresses stated below or at any other such address(es) as may be designated in writing: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Partnership 000 - 0xx Xxxxx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 0000 Xxxxxxxxx Xxxxx Xxxxx 0000 Xxxx, XX 00000 Canada Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase BankXxxxxxx Xxxxxxxx, DetroitXX, MI Xxx Xxxx, XX ABA No: 000000000 Account No: 073083076-43 5207 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx X. Xxxxxxx By: /s/ Xxxxx Xxxx X. Xxxxxxxx Xxxxxx X. Xxxxxxx Xxxx X. Xxxxxxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Transportation Services Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 President, Commercial Operations XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01, 2005 November 03. 2008 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Primarv Receipt Point(s) of Primary Primarv Delivery MDQ (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 12/01/2008 03/31/2009 MUTTONVILLE 100,000 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 12/01/2008 03/31/2009 OTISVILLE 100,000 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership ByANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx /s/ XXXXXX X. XXXXXXXXX Xxxxxx X. Xxxxxxxxx Director – Commercial Services ANR Pipeline Company Dated: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx ByOctober 31, 2014 Dated: /s/ Xxxxx Xxxx Title: DirectorOctober 31, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01October 30, 2005 2014 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXXX 0 974 QuickLinks Exhibit 99.9

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: XXX XXXXXXXX Xxx Xxxxxxxx Director, Transportation Accounting and Contracts /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByJanuary 6, 2017 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 January 6, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable November 01, 2016 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 303,900 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 303,900 974 04/01/2016 10/31/2016 SOUTH XXXXXXX 0 974 11/01/2016 03/31/2017 SOUTH XXXXXXX 303,900 974 04/01/2017 10/31/2017 SOUTH XXXXXXX 0 974 11/01/2017 03/31/2018 SOUTH XXXXXXX 303,900 974 04/01/2018 10/31/2018 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 FORTUNE LAKE 303,900 974 04/01/2015 10/31/2015 FORTUNE LAKE 0 974 11/01/2015 03/31/2016 FORTUNE LAKE 303,900 974 04/01/2016 10/31/2016 FORTUNE LAKE 0 974 11/01/2016 03/31/2017 FORTUNE LAKE 303,900 974 04/01/2017 10/31/2017 FORTUNE LAKE 0 974 11/01/2017 03/31/2018 FORTUNE LAKE 303,900 974 04/01/2018 10/31/2018 FORTUNE LAKE 0 974 QuickLinks Exhibit 99.9

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: XXX XXXXXXXX Xxx Xxxxxxxx Director, Transportation Accounting and Contracts /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByJanuary 11, 2017 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 January 11, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December January 31, 0000 Xxxxxxxxxx Xxxxxxxx Dated: November 01, 2005 Supersedes Appendix Dated: Not Applicable 2016 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 115,771 974 11/01/2015 03/31/2016 XXXXXX 115,771 974 04/01/2016 10/31/2016 XXXXXX 0 974 11/01/2016 01/31/2017 SOUTH XXXXXXX 115,771 974 11/01/2016 01/31/2017 XXXXXX 115,771 974 11/01/2014 03/31/2015 XXXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 115,771 974 04/01/2016 10/31/2016 XXXXXXX 0 974 11/01/2016 01/31/2017 XXXXXXX 115,771 974 QuickLinks Exhibit 99.7

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited Partnership Commercial Services 000 Xxxxx Xxxxxx Xxxxxxx, XX 00000-0000 TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership X0X 0X0 Xxxxxx Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 Xxxxxx AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx X. Xxxxxxx Xxxxxx X. Xxxxxxx Director, Commercial Services /s/ Xxxxx Xxxxxx Xxxxx Xxxxxx Xxxxx By: Vice President, Commercial—East Canadian Pipelines /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxxxxxxx Xxxx Please Print Title: Xxxxxxxxx Senior Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print Canadian and Eastern US Pipelines APPENDIX A Contract Identification FT5840 FT16130 Date: December 01March 09, 2005 2011 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2011 10/31/2012 XXXXXXX 105,965 25,000 974 11/01/2006 10/31/2011 ST11/01/2011 10/31/2012 SAULT STE. CLAIR 105,965 974XXXXX TCPL 25,000 1142 QuickLinks Exhibit 99.13

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxxxx Director, Commercial Services /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 14, 2015 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 14, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable November 01, 2015 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 XXXXXX 178,440 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2015 03/31/2016 XXXXXX 178,440 974 04/01/2016 10/31/2016 XXXXXX 0 974 11/01/2016 03/31/2017 XXXXXX 178,440 974 04/01/2017 10/31/2017 XXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 105,965 178,440 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 178,440 974 04/01/2016 10/31/2016 XXXXXXX 0 974 11/01/2016 03/31/2017 XXXXXXX 178,440 974 04/01/2017 10/31/2017 XXXXXXX 0 974 QuickLinks Exhibit 99.10

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing and sent to the addresses stated below or at any other such address(es) as may be designated in writing: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 Xxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-Vice President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 FT5841 Date: December 01, 2005 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 10/31/2008 XXXXXXX 105,965 50,000 974 11/01/2006 10/31/2011 10/31/2008 ST. CLAIR 105,965 50,000 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership ByANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx /s/ XXXXXX X. XXXXXXXXX Xxxxxx X. Xxxxxxxxx Director – Commercial Services ANR Pipeline Company Dated: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx ByOctober 31, 2014 Dated: /s/ Xxxxx Xxxx Title: DirectorOctober 31, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01October 30, 2005 2014 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 303,900 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 FORTUNE LAKE 303,900 974 04/01/2015 10/31/2015 FORTUNE LAKE 0 974 QuickLinks Exhibit 99.11

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership 000 400 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxxxxx Xxxxxxxx Xxxxxxx, XX 00000 Canada X0X 0X0 700 Xxxxx Xxxxxx Xxxxxx Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 Sxxxx Xxxxxx AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP TRANSCANADA PIPELINES LIMITED By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx Jxxxxx X. Xxxxxxx By: /s/ Xxxxx Xxxx Kxxx Xxxxxxxxx Jxxxxx X. Xxxxxxx Kxxx Xxxxxxxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Commercial Services Title: Vice President Gas Transmission East TransCanada Please Print Senior Vice-President, Canadian and Eastern US Pipelines By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Sxxxx Xxxxxx Sxxxx Xxxxxx Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 President, Commercial-East Canadian Pipelines XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01February 06, 2005 2012 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Maximum Allowable Operating Pressure Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 11/01/2012 10/31/2014 EXXXXXX 100,000 974 11/01/2006 10/31/2011 11/01/2012 10/31/2014 ST. CLAIR 105,965 100,000 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx X. Xxxxxxxxx /s/ XXXXXX X. XXXXXXX Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Commercial Services Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 3, 2014 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 3, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable October 30, 2014 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 101,300 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 101,300 974 04/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 101,300 974 11/01/2015 03/31/2016 XXXXXX 101,300 974 04/01/2016 10/31/2016 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 101,300 974 04/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 101,300 974 04/01/2016 10/31/2016 XXXXXXX 0 974 QuickLinks Exhibit 99.16

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxxxx Director, Commercial Services /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 14, 2015 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 14, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable November 01, 2015 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 101,300 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 101,300 974 04/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 101,300 974 11/01/2015 03/31/2016 XXXXXX 101,300 974 04/01/2016 10/31/2016 SOUTH XXXXXXX 0 974 11/01/2016 03/31/2017 SOUTH XXXXXXX 101,300 974 11/01/2016 03/31/2017 XXXXXX 101,300 974 04/01/2017 10/31/2017 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 101,300 974 04/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 101,300 974 04/01/2016 10/31/2016 XXXXXXX 0 974 11/01/2016 03/31/2017 XXXXXXX 101,300 974 04/01/2017 10/31/2017 XXXXXXX 0 974 QuickLinks Exhibit 99.12

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxxxxx Xxxxxxxx Xxxxxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership X0X 0X0 000 Xxxxx Xxxxxx Xxxxxx Xxxxxxx, XX 00000-0000 Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 Xxxxxx AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP TRANSCANADA PIPELINES LIMITED By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx Xxxxx X. Xxxxxxx By: /s/ Xxxx Xxxxxxxxx Xxxxxx Xxxxx X. Xxxxxxx Xxxx Xxxxxxxxx Title: Director, Commercial Services Title: Senior Vice-President, Canadian and Eastern US Pipelines By: /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxxx Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Xxxxxx Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 President, Commercial-East Canadian Pipelines XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01February 06, 2005 2012 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Maximum Allowable Operating Pressure Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 974 11/01/2006 10/31/2011 11/01/2012 03/31/2013 ST. CLAIR 105,965 123,962 974 04/01/2013 10/31/2013 ST. CLAIR 160,000 974 11/01/2013 03/31/2014 ST. CLAIR 123,962 974 04/01/2014 10/31/2014 ST. CLAIR 160,000 974 11/01/2014 03/31/2015 ST. CLAIR 123,962 974 04/01/2015 10/31/2015 ST. CLAIR 160,000 974 11/01/2012 03/31/2013 XXXXXXX 123,962 974 04/01/2013 10/31/2013 XXXXXXX 160,000 974 11/01/2013 03/31/2014 XXXXXXX 123,962 974 04/01/2014 10/31/2014 XXXXXXX 160,000 974 11/01/2014 03/31/2015 XXXXXXX 123,962 974 04/01/2015 10/31/2015 XXXXXXX 160,000 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership ANR PIPELINE COMPANY Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP ANR PIPELINE COMPANY By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxx Xxxxxxxx /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Transportation Accounting and Contracts Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByMarch 09, 2017 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print March 09, 2017 APPENDIX A Contract Identification FT5840 Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01March 07, 2005 2017 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 04/01/2017 10/31/2017 XXXXXX 0 974 11/01/2017 03/31/2018 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 11/01/2017 03/31/2018 XXXXXX 202,464 974 04/01/2018 10/31/2018 XXXXXX 0 974 04/01/2017 10/31/2017 XXXXXXX 0 974 11/01/2017 03/31/2018 XXXXXXX 202,464 974 04/01/2018 10/31/2018 XXXXXXX 0 974

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx X. Xxxxxxxxx /s/ XXXXXX X. XXXXXXX Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Commercial Services Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 3, 2014 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 3, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable October 30, 2014 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 115,771 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 115,771 974 11/01/2015 03/31/2016 XXXXXX 115,771 974 04/01/2016 10/31/2016 XXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 115,771 974 04/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 115,771 974 04/01/2016 10/31/2016 XXXXXXX 0 974 QuickLinks Exhibit 99.13

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: XXX XXXXXXXX Xxx Xxxxxxxx Director, Transportation Accounting and Contracts /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByJanuary 06, 2017 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 January 06, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable November 01, 2016 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 SOUTH XXXXXXX 105,965 101,300 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97411/01/2014 03/31/2015 XXXXXX 101,300 974 04/01/2015 10/31/2015 SOUTH XXXXXXX 0 974 11/01/2015 03/31/2016 SOUTH XXXXXXX 101,300 974 11/01/2015 03/31/2016 XXXXXX 101,300 974 04/01/2016 10/31/2016 SOUTH XXXXXXX 0 974 11/01/2016 03/31/2017 SOUTH XXXXXXX 101,300 974 11/01/2016 03/31/2017 XXXXXX 101,300 974 04/01/2016 10/31/2017 SOUTH XXXXXXX 0 974 11/01/2017 03/31/2018 SOUTH XXXXXXX 101,300 974 11/01/2017 03/31/2018 XXXXXX 101,300 974 04/01/2018 10/31/2018 SOUTH XXXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 101,300 974 04/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 101,300 974 04/01/2016 10/31/2016 XXXXXXX 0 974 11/01/2016 03/31/2017 XXXXXXX 101,300 974 04/01/2017 10/31/2017 XXXXXXX 0 974 11/01/2017 03/31/2018 XXXXXXX 101,300 974 04/01/2018 10/31/2018 XXXXXXX 0 974 QuickLinks Exhibit 99.10

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxxxxx Xxxxxxxx Xxxxxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership X0X 0X0 000 Xxxxx Xxxxxx Xxxxxx Xxxxxxx, XX 00000-0000 Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 Xxxxxx AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP TRANSCANADA PIPELINES LIMITED By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx Xxxxx X. Xxxxxxx By: /s/ Xxxx Xxxxxxxxx Xxxxxx Xxxxx X. Xxxxxxx Xxxx Xxxxxxxxx Title: Director, Commercial Services Title: Senior Vice-President, Canadian and Eastern US Pipelines By: /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxxx Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Xxxxxx Title: Vice-President Gas Transmission West Please Print President, Commercial-East Canadian Pipelines Contract ID: FT17193 APPENDIX A Contract Identification FT5840 Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01February 06, 2005 2012 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Maximum Allowable Operating Pressure Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 974 11/01/2006 10/31/2011 11/01/2012 03/31/2013 ST. CLAIR 105,965 97436,038 974 04/01/2013 10/31/2013 ST. CLAIR 0 974 11/01/2013 03/31/2014 ST. CLAIR 36,038 974 04/01/2014 10/31/2014 ST. CLAIR 0 974 11/01/2014 03/31/2015 ST. CLAIR 36,038 974 04/01/2015 10/31/2015 ST. CLAIR 0 974 11/01/2012 03/31/2013 SAULT STE. XXXXX TCPL 36,038 1142 04/01/2013 10/31/2013 SAULT STE. XXXXX TCPL 0 1142 11/01/2013 03/31/2014 SAULT STE. XXXXX TCPL 36,038 1142 04/01/2014 10/31/2014 SAULT STE. XXXXX TCPL 0 1142 11/01/2014 03/31/2015 SAULT STE. XXXXX TCPL 36,038 1142 04/01/2015 10/31/2015 SAULT STE. XXXXX TCPL 0 1142

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive CalgaryXxxxxxxxx Xx., AB T2P 5H1 XxxxXxxxx 000 Xxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: ANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXXXX Xxxxxx Xxxxx X. Xxxxxxxxx /s/ XXXXXX X. XXXXXXX Xxxxxx Xxxxx By: /s/ Xxxxx Xxxx Title: X. Xxxxxxx Director, Commercial Services Director, Long Term Marketing & Business Signature Operations Xxxxx Xxxx Please Print TitleDated: Vice President Gas Transmission East TransCanada Please Print ByDecember 3, 2014 Dated: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 December 3, 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable October 30, 2014 Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 XXXXXX 178,440 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2015 03/31/2016 XXXXXX 178,440 974 04/01/2016 10/31/2016 XXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 105,965 178,440 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 XXXXXXX 0 974 11/01/2015 03/31/2016 XXXXXXX 178,440 974 04/01/2016 10/31/2016 XXXXXXX 0 974 QuickLinks Exhibit 99.14

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Services 000 - 0xx Xxxxx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada 00000-0000 ANR PIPELINE COMPANY 000 Xxxxxxxxx Xx., Xxxxx 000 Xxxxxxx, XX 00000-0000 Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership ByANR PIPELINE COMPANY /s/ XXXXXX X. XXXXXXX Xxxxxx X. Xxxxxxx /s/ XXXXXX X. XXXXXXXXX Xxxxxx X. Xxxxxxxxx Director – Commercial Services ANR Pipeline Company Dated: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx ByOctober 31, 2014 Dated: /s/ Xxxxx Xxxx Title: DirectorOctober 31, Marketing & Business Signature Operations Xxxxx Xxxx Please Print Title: Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print APPENDIX A Contract Identification FT5840 0000 XXXXXXXX X Xxxxxxxx Xxxxxxxxxxxxxx XX00000 Date: December 01October 30, 2005 2014 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED ANR PIPELINE COMPANY Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(sPoints(s) of Primary Delivery MDQ MDO Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2014 03/31/2015 XXXXXX 178,440 974 04/01/2015 10/31/2015 XXXXXX 0 974 11/01/2014 03/31/2015 XXXXXXX 105,965 178,440 974 11/01/2006 10/31/2011 ST. CLAIR 105,965 97404/01/2015 10/31/2015 XXXXXXX 0 974 QuickLinks Exhibit 99.10

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or fax, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail, or fax, or other means similarly agreed to: ADMINISTRATIVE MATTERS Great Lakes Gas Transmission Limited Partnership Commercial Services 000 Xxxxx Xxxxxx Xxxxxxx, XX 00000-0000 TRANSCANADA PIPELINES LIMITED Partnership 000 - 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXxxxxxx, XX 00000 Canada Attn: Transportation Services Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership X0X 0X0 Xxxxxx Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 Xxxxxx AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission Limited Partnership By: /s/ Xxxxxx X. Xxxxxxx Xxxxxx X. Xxxxxxx Director, Commercial Services /s/ Xxxxx Xxxxxx Xxxxx Xxxxxx Xxxxx By: Vice President, Commercial—East Canadian Pipelines /s/ Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxxxxxxx Xxxx Please Print Title: Xxxxxxxxx Senior Vice President Gas Transmission East TransCanada Please Print By: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Title: Vice-President Gas Transmission West Please Print Canadian and Eastern US Pipelines APPENDIX A Contract Identification FT5840 FT16129 Date: December 01March 09, 2005 2011 Supersedes Appendix Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED Maximum Daily Quantity (Dth/Day) per Location: Begin Date End Date Point(s) of Primary Receipt Point(s) of Primary Delivery MDQ Maximum Allowable Operating Pressure (MAOP) 11/01/2006 10/31/2011 11/01/2011 10/31/2012 XXXXXXX 105,965 313,727 974 11/01/2006 10/31/2011 11/01/2011 10/31/2012 ST. CLAIR 105,965 974313,727 974 QuickLinks Exhibit 99.12

Notices and Communications. All notices and communications with respect to this Agreement shall be in writing by mail, e-mail, or other means as agreed to by the parties, and sent to the addresses stated below or at to any other such address(es) as may be designated in writingwriting by mail, e-mail;or other means similarly agreed to: ADMINISTRATIVE MATTERS MATTERS: Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Commercial Operations 000 - Xxxxxxxxx Xxxxxx, Xxxxx 000 Xxxxxxx, XX 00000-0000 TransCanada PipeLines Limited 000 0xx Xxxxxx X.X. 5250 Corporate Drive Calgary, AB T2P 5H1 XxxxXX Xxxxxxx, XX 00000 Canada Attn: Transportation Services X0X 0X0 ·Attn: Xxxx Xxxxxxxxxxx PAYMENT BY ELECTRONIC TRANSFER Great Lakes Gas Transmission Limited TRANSCANADA PIPELINES LIMITED Partnership Attn: Xxxxx Xxxxxxxx JPMorgan Chase Bank, Detroit, MI ABA No: 000000000 Account No: 07308-43 AGREED TO BY: GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP By: Great Lakes Gas Transmission Company TRANSCANADA PIPELINES LIMITED Operator and Agent for Great Lakes Gas Transmission TransCanada PipeLines Limited Partnership By: /s/ Xxxxxx Xxxxx Xxxxxx Xxxxx Xxx Xxxxxxxx By: /s/ Docusigned by: Xxx Xxxxx Xxxx Title: Director, Marketing & Business Signature Operations Xxxxx Xxxx Please Print transportation Accounting and Contracts Title: Vice President Gas Transmission East TransCanada Please Print ByBt: /s/ Xxx Xxxxxxx Signature Xxx Xxxxxxx Please Print Xxxxxx Xxxxxxxx Title: ViceDirector, Eatern Markets Legal content DocuSign Envelope ID: E6D47635-President Gas Transmission West Please Print 5F4E-4F7C-9A78-9B3001190D22 . APPENDIX A Contract Identification FT5840 CONTRACT IDENTIFICATION: FT17193 Date: December November 01, 2005 Supersedes Appendix 0000 Xxxxxxxxxx Xxxxxxxx Dated: Not Applicable Shipper: TRANSCANADA PIPELINES LIMITED November 01, 0000 Xxxxxxx XxxxxXxxxxx PipeLines Limited Maximum Daily Quantity (Dth/Day) per Locationper·Location: Begin Date End Date Point(s) of Primary primary Receipt Point(s) of Primary Delivery MDQ (MAOP) 11/01/2006 10/31/2011 XXXXXXX 105,965 974 11/01/2006 10/31/2011 STBegin Date End Date MDO SAULT STE XXXXX TCPL ST CLAIR RECEIPT 36,038 . 11/1/2012 3/31/2013 SAULT STE XXXXX TCPL ST CLAIR 105,965 974RECEIPT 4/1/2013 10/31/2013 0 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 3/31/2014 36,038 11/1/2013 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 4/1/2014 10/31/201.4 0 SAULT. STE XXXXX TCPL ST CLAIR RECEIPT 11/1/2014 3/31/2015 36,038 SAULT STE MARlE TCPL ST CLAIR RECBIPT 4/1/201S 10/31/2015 0 XxxxXxxx Xxxxxxxx 00:XXX00000-0X0X-0X0X-0X0X-000000000X00 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 3/31/2016 33,195 11/1/2015 SAULT STB XXXXX TCPL ST CLAIR RECEIPT 4/1/2016 10/31/2016 0 SAULT STE XXXXX TCPL ST CLAIR RECEIPT ·11/1/2016 3/31/2017 33,195 SAULT STE XXXXX TCPL ST CLAIR RECEIPT-10/3112017 0 4/1/2017 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 33,195 11/1/2017 3/31/2018 SAULT STE MARIB TCPL ST CLAIR RECEIPT 4/1/2018 10/31/2018 0 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 11/1/2018 3/31/2019 33,195 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 4/1/2019 10/31/2019 0 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 11/1/2019 3/31/2020 33,195 SAULT STE XXXXX TCPL ST CLAIR RECEIPT 0 4/1/2020 10/31/2020 DocuSign Envelope ID: E6D47635-5F4E-4F7C-9A7B-983001190D22 SAULT STE XXXXX TCPL 33,195 ST CLAIR RECEIPT 11/1/2020 3/31/2021 SAULT STE XXXXX TCPL ST CLAIR 10/31/2021 RECEIPT 4/1/2021 0