May 8, Ms. Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C

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1 May 8, 2017 Great Lakes Gas Transmission Company 700 Louisiana Street Houston, TX John A. Roscher Director, Rates & Regulatory Ms. Kimberly D. Bose, Secretary Federal Energy Regulatory Commission 888 First Street, N.E. Washington, D.C tel fax web Re: Great Lakes Gas Transmission Limited Partnership Revenue Cap and Revenue Sharing Mechanism True-Up Report Docket No. RP Dear Ms. Bose: Great Lakes Gas Transmission Limited Partnership ( Great Lakes ), pursuant to Appendix F of the Settlement 1 filed by Great Lakes on September 27, 2013, in Docket No. RP , and approved by the Federal Energy Regulatory Commission ( Commission ) on November 14, 2013, 2 hereby submits for filing its Revenue Cap and Revenue Sharing Mechanism Rider True-Up Report ( True-Up Report ) for the twelve-month period ending December 31, Correspondence The names, titles, mailing addresses, and telephone numbers of those persons to whom correspondence and communications concerning this filing should be addressed are as follows: 1 Stipulation and Agreement, Docket No. RP (2013) ( Settlement ). 2 Great Lakes Gas Transmission Limited Partnership, 145 FERC 61,126 (2013).

2 David R. Hammel* John A. Roscher Senior Legal Counsel Director, Rates & Regulatory Great Lakes Gas Transmission Company Joan F. Collins* 700 Louisiana Street, Suite 700 Manager, Tariffs and Compliance Houston, Texas Great Lakes Gas Transmission Company Tel. (832) Louisiana Street, Suite 700 Houston, Texas Tel. (832) * Persons designated for official service pursuant to Rule Statement of Nature, Reasons, and Basis for Filing Appendix F of Great Lakes Settlement sets forth a method of establishing two measures, a Tier One Threshold and a Tier Two Cap, based upon the reported jurisdictional cost and revenue data from Great Lakes annual FERC Form No. 2 ( Form 2 ). Applicable transportation revenue that produces an ROE above percent (i.e., the Tier One Threshold), up to the higher Tier Two Cap, is to be shared on a 50/50 basis between Qualifying Shippers 3 and Great Lakes ( Tier One Sharing Revenue ). One hundred percent of applicable transportation revenue in excess of the Tier Two Cap, which is to be set at an assumed percent ROE, is to be credited to Qualifying Shippers ( Tier Two Sharing Revenue ). Appendix F, Section D, of the Settlement provides that no later than fifteen (15) business days following the submission of Great Lakes Form 2, Great Lakes will file with the Commission, as well as post to Great Lakes internet website, a True-Up Report identifying any applicable transportation revenue that exceeds either the Tier One Threshold or the Tier Two Cap, and the amounts defined in the Settlement as Shared Proceeds to be credited to Qualifying Shippers. 4 Appendix F, Section D, further provides that Qualifying Shippers will receive their respective Shared Proceeds within forty-five (45) days of a FERC order accepting Great Lakes True-Up Report. 3 The term Qualifying Shippers is defined in Appendix F, Section C of Great Lakes Settlement as shippers that (i) qualify as Supporting/Non-Disputing Participants and are therefore bound by the Settlement and (ii) are firm shippers on Great Lakes that have paid, or are paying rates for jurisdictional service at some point during the year within the respective Revenue Cap and Revenue Sharing period. 4 Great Lakes submitted its annual FERC Form No. 2 on April 17,

3 As reflected in Great Lakes 2016 Form 2 revenue data, jurisdictional transportation revenue for purposes of determining a refund obligation totaled approximately $185 million. Further, based upon Great Lakes 2016 Form 2 data, the Tier One Threshold equates to a cost-of-service of approximately $171 million. Therefore, Great Lakes 2016 applicable transportation revenues exceed the Tier One Threshold by approximately $14 million, which will be shared on a 50/50 basis between Great Lakes and the Qualifying Shippers in accordance with Tier One Sharing Revenue requirements of the Settlement. Great Lakes 2016 Form 2 analysis yields an estimated ROE of 16.67%, which is less than the 20.00% ROE threshold established in the Settlement for the Tier Two Cap; consequently, there is no Tier Two Sharing Revenue. Great Lakes is submitting herein its True-Up Report as Attachment 1. Appendix A of Attachment 1 sets forth Great Lakes 2016 Form 2 analysis that is used to determine jurisdictional transportation revenue eligible for sharing pursuant to the Settlement. Appendix B sets forth workpapers identifying the allocation of the Tier One Sharing Revenue into reservation and usage amounts, as required by the Settlement, and aggregate Shared Proceeds amounts. Finally, Appendix C reflects a summary of the Shared Proceeds that will be credited to the Qualifying Shippers, including applicable reservation and usage amounts. Materials Enclosed In accordance with Section of the Commission s regulations, Great Lakes is submitting a filing package, which includes: 1. This transmittal letter; and 2. Attachment 1. Certificate of Service As required by Section (2) of the Commission s regulations, copies of this filing are being served on all of Great Lakes existing customers and interested state regulatory agencies. A copy of this letter, together with the other attachments, is available during regular business hours for public inspection at Great Lakes principal place of business. 3

4 Pursuant to Section and Section , the undersigned has read this filing and knows its contents and the contents are true as stated, to the best of his knowledge and belief. The undersigned possesses full power and authority to sign such filing. Any questions regarding this filing may be directed to Joan Collins at (832) Respectfully Submitted, GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP BY: GREAT LAKES GAS TRANSMISSION COMPANY, ITS OPERATOR John A. Roscher Director, Rates & Regulatory Enclosure 4

5 Great Lakes Gas Transmission Limited Partnership Attachment 1

6 Great Lakes Gas Transmission, L.L.C. Determination of Revenue Threshold and Revenue Cap 2016 FERC Form 2 Analysis Appendix A 1 of 1 Line No. Description Form 2 Reference / Formula Amount Rate Base 1 Gas Plant in Service Pg. 110; Ln. 2 $ 2,087,281,582 2 Accumulated Depreciation Pg. 110; Ln. 5 (1,379,043,274) Gas Stored - Base Gas 3 Account (Base) Pg. 220; Ln. 5, Col. B - 4 Account (System) Pg. 220; Ln. 5, Col. C - Working Capital 5 Prepayments Pg. 230a; Ln ,693 6 Material and Supplies Pg. 111; Ln ,150,171 Accumulated Deferred Income Tax 7 Account 190 Pg. 235; Ln. 7, Col. K, as adjusted - 8 Account 282 Pg. 275; Ln. 7, Col. K, as adjusted (207,858,194) 9 Account 283 Pg. 277; Ln. 7, Col. K, as adjusted (1,112,575) 10 Regulatory Assets Pg. 232; Ln. 40, Col. G 2,932,113 1/ 11 Regulatory Liabilities Pg. 278; Ln. 45, Col. G - 1/ 12 Total Rate Base $ 513,127,516 Capital Costs 13 Cost of Debt Pg. 218a; Col. D 7.75% 14 Rate of Return on Equity 13.25% Capitalization Ratio 15 Debt Pg. 218a; Col. C 51.00% 16 Equity Pg. 218a; Col. C 49.00% 17 Weighted Cost of Debt (Ln. 13 x Ln. 15) 3.95% 18 Weighted Cost of Equity (Ln. 14 x Ln. 16) 6.49% 19 Total Return (Ln Ln. 18) 10.44% Cost of Service 20 Return (Ln. 12 x Ln. 19) $ 53,595, Composite Income Tax (37.94%) 20,365, Other Taxes Pg. 114; Ln 14; Col C 10,872, Depreciation Pg. 337; Ln 12; Col H 27,910,749 O&M (Net of Gas Costs) 24 Production & Gathering - 25 Net Storage - 26 Net Transmission Costs Pg. 323; Ln. 201 (less Ln. 184 and 38,614,789 Pg. 331, Ln 5, Col. d) 27 A&G Overhead Pg. 325; Ln ,387, Total Cost of Service and Tier One Threshold $ 170,745,793 Applicable Transportation Revenues 29 ACA Revenues Pg. 300; Ln. 10, Col. D $ - 1/ Revenues from Transportation of Gas 30 of Others Through Transmission Facilities Pg. 301; Ln. 10, Col. F 184,599, Total Revenue $ 184,599,154 Tier One Sharing Revenue 32 Revenues Above/(Below) Indicated COS (Ln Ln. 28) $ 13,853,361 2/ 33 Estimated Return on Equity 16.67% 3/ 1/ Excludes amounts related to the fuel tracker and ACA revenues. 2/ Tier One Threshold utilizes an assumed return on equity of 13.25% (Settlement - Appendix F, Section B.4). 3/ Estimated Return on Equity (16.67%) did not exceed the 20% Tier Two Cap and is calculated as follows: [13.25% Rate of Return on Equity ($33,312,696) + Line 32 Revenues Above Cost-of-Service, net of Income Taxes ($8,597,396)] / Equity Rate Base ($251,416,631)

7 Great Lakes Gas Transmission, L.L.C 2016 Tier One Sharing Revenue Allocation Summary Appendix B 1 of 2 Line No. Description 1 Total Tier One Sharing Revenue (Appendix A, Ln. 32) $ 13,853, Tier One Sharing Revenue - Reservation and Usage Components 1/ Qualifying Shippers Revenue 2/ Qualifying Shippers Allocation Ratio Tier One Sharing Components (a) (b) (c) 2 Reservation Revenue (Appendix B, Pg. 2 of 2, Col. b, Ln. 47) $ 177,511, % $ 13,498, Usage Revenue (Appendix. B, Pg. 2 of 2, Col. f, Ln. 47) $ 4,665, % $ 354, Total Revenue $ 182,176, % $ 13,853, Tier One Sharing Revenue - Reservation Component 3/ 5 Maximum Qualifying Shippers 50% $ 6,749, Great Lakes 50% $ 6,749, Total Reservation Revenue $ 13,498, Tier One Sharing Revenue - Usage Component 4/ 8 Qualifying Shippers 50% $ 177, Great Lakes 50% $ 177, Total Usage Revenue $ 354, / Tier One Sharing Revenue is separated into "reservation" and "usage" components based on the ratio of Qualifying Shippers' reservation fees to Qualifying Shippers' total usage and reservation fees and the ratio of Qualifying Shippers' usage fees to Qualifying Shippers' total usage and reservation fees paid during the calendar year (Settlement - Appendix F, Section B.5). 2/ "Qualifying Shippers" are those shippers that: (1) qualify as Supporting/Non-Disputing Participants and are therefore bound by the Settlement; and (2) are firm shippers on Great Lakes that have paid, or are firm shippers paying, rates for jurisdictional service at some point during the calendar year (Settlement - Appendix F, Section C). 3/ The reservation component of Tier One Sharing Revenue is shared on a 50/50 basis between Qualifying Shippers that are also maximum recourse rate shippers ("Maximum Qualifying Shippers") and Great Lakes (Settlement - Appendix F, Section B.6(a)). 4/ The usage component of Tier One Sharing Revenue is shared on a 50/50 basis between Qualifying Shippers and Great Lakes (Settlement - Appendix F, Section B.6(b)).

8 Great Lakes Gas Transmission, L.L.C Tier One Sharing Revenue Allocation Qualifying Shippers' Reservation and Usage Revenue Appendix B 2 of 2 Line No. Shipper Qualifying Shippers Reservation Revenue Maximum Qualifying Shippers Reservation Revenue Qualifying Shippers Usage Revenue (a) (b) (c) (d) (e) (f) Amount Amount Percentage Amount Percentage 1 ANR PIPELINE COMPANY $ 62,103, $ 60,741, % $ 974, % 2 BP CANADA ENERGY MARKETING CORP. 7,190, , % 864, % 3 CALUMET SUPERIOR, LLC 230, , % 5, % 4 CARGILL INCORPORATED 1,527, % 90, % 5 CASTLETON COMMODITIES MERCHANT TRADING L.P 399, , % 17, % 6 CENTERPOINT ENERGY SERVICES, INC. 2, % % 7 CENTRA GAS MANITOBA INC. 3,253, % 164, % 8 CITY OF COHASSET 12, , % % 9 CITY OF DULUTH 518, , % % 10 CNE GAS SUPPLY, LLC 165, , % 11, % 11 CONOCOPHILLIPS COMPANY 496, % 33, % 12 CONSTELLATION ENERGY SCVS - NAT GAS, LLC 520, % 42, % 13 CONSTELLATION ENERGY SERVICES, INC. 3, % % 14 CONSUMERS ENERGY COMPANY 764, % % 15 DIRECT ENERGY BUSINESS MARKETING, LLC 12, % 2, % 16 DTE ENERGY TRADING, INC. 1,770, ,741, % 63, % 17 DTE GAS COMPANY 8,553, ,553, % 137, % 18 EDF TRADING NORTH AMERICA, LLC 821, % 47, % 19 ELEMENT MARKETS RENEWABLE NATURAL GAS, LLC 72, , % 1, % 20 EXELON GENERATION COMPANY, LLC 2,234, % 111, % 21 GORHAMS, INC. DBA NORTHWEST NAT GAS, LLC 22, , % % 22 INTERSTATE POWER AND LIGHT COMPANY 344, , % 5, % 23 J. ARON & COMPANY 3,068, , % 162, % 24 KOCH ENERGY SERVICES, LLC 28, % 2, % 25 MERCURIA COMMODITIES CANADA CORPORATION 412, , % 31, % 26 MIECO, INC 17, , % % 27 MINNESOTA ENERGY RESOURCES CORPORATION 983, , % 10, % 28 MINNESOTA POWER 69, , % 1, % 29 MORGAN STANLEY CAPITAL GROUP INC. 616, % 43, % 30 NORTHERN STATES POWER COMPANY (MN) 1,062, , % 28, % 31 NORTHERN STATES POWER COMPANY (WI) 1,431, , % 35, % 32 NORTHWEST NATURAL GAS OF CASS COUNTY INC. 3, , % % 33 PETROCHINA INTL (CANADA) TRADING LTD. 2,117, % 163, % 34 S.D. WARREN COMPANY 392, , % 8, % 35 SEMCO ENERGY INC. D/B/A SEMCO ENERGY GAS 1,865, % 6, % 36 SHELL ENERGY NORTH AMERICA (US), L.P. 1,409, , % 62, % 37 SUPERIOR WATER, LIGHT AND POWER 161, , % 4, % 38 TENASKA MARKETING VENTURES 4,148, , % 304, % 39 TRANSCANADA PIPELINES LIMITED 63,599, ,327, % 989, % 40 TWIN EAGLE RESOURCE MANAGEMENT, LLC 1,783, , % 113, % 41 UNITED ENERGY TRADING CANADA, ULC 1,216, % 80, % 42 UNITED STATES GYPSUM COMPANY 1,300, ,300, % 30, % 43 WISCONSIN ELECTRIC POWER COMPANY 215, , % 4, % 44 WISCONSIN GAS LLC 430, , % 3, % 45 WISCONSIN PUBLIC SERVICE CORPORATION 105, % 1, % 46 WORLD FUEL SERVICES, INC. 49, , % 1, % 47 Total Qualifying Shippers Revenue $ 177,511, $ 134,731, % $ 4,665, %

9 Great Lakes Gas Transmission, L.L.C Tier One Shared Proceeds Summary Appendix C 1 of 1 Line No. Shipper Maximum Qualifying Shippers Reservation Shared Proceeds 1/ Qualifying Shippers Usage Shared Proceeds 2/ Total Shared Proceeds (a) (b) (c) (d) (e) (f) Percentage Amount Percentage Amount Amount 1 ANR PIPELINE COMPANY % $ 3,042, % $ 37, $ 3,079, BP CANADA ENERGY MARKETING CORP % 32, % 32, , CALUMET SUPERIOR, LLC % 11, % , CARGILL INCORPORATED % % 3, , CASTLETON COMMODITIES MERCHANT TRADING L.P % % CENTERPOINT ENERGY SERVICES, INC % % CENTRA GAS MANITOBA INC % % 6, , CITY OF COHASSET % % CITY OF DULUTH % 24, % - 24, CNE GAS SUPPLY, LLC % 8, % , CONOCOPHILLIPS COMPANY % % 1, , CONSTELLATION ENERGY SCVS - NAT GAS, LLC % % 1, , CONSTELLATION ENERGY SERVICES, INC % % CONSUMERS ENERGY COMPANY % % DIRECT ENERGY BUSINESS MARKETING, LLC % % DTE ENERGY TRADING, INC % 87, % 2, , DTE GAS COMPANY % 428, % 5, , EDF TRADING NORTH AMERICA, LLC % % 1, , ELEMENT MARKETS RENEWABLE NATURAL GAS, LLC % 3, % , EXELON GENERATION COMPANY, LLC % % 4, , GORHAMS, INC. DBA NORTHWEST NAT GAS, LLC % 1, % , INTERSTATE POWER AND LIGHT COMPANY % 17, % , J. ARON & COMPANY % % 6, , KOCH ENERGY SERVICES, LLC % % MERCURIA COMMODITIES CANADA CORPORATION % % 1, , MIECO, INC % % MINNESOTA ENERGY RESOURCES CORPORATION % 49, % , MINNESOTA POWER % 3, % , MORGAN STANLEY CAPITAL GROUP INC % % 1, , NORTHERN STATES POWER COMPANY (MN) % 30, % 1, , NORTHERN STATES POWER COMPANY (WI) % 30, % 1, , NORTHWEST NATURAL GAS OF CASS COUNTY INC % % PETROCHINA INTL (CANADA) TRADING LTD % % 6, , S.D. WARREN COMPANY % 19, % , SEMCO ENERGY INC. D/B/A SEMCO ENERGY GAS % % SHELL ENERGY NORTH AMERICA (US), L.P % 36, % 2, , SUPERIOR WATER, LIGHT AND POWER % 6, % , TENASKA MARKETING VENTURES % 1, % 11, , TRANSCANADA PIPELINES LIMITED % 2,821, % 37, ,859, TWIN EAGLE RESOURCE MANAGEMENT, LLC % % 4, , UNITED ENERGY TRADING CANADA, ULC % % 3, , UNITED STATES GYPSUM COMPANY % 65, % 1, , WISCONSIN ELECTRIC POWER COMPANY % % , WISCONSIN GAS LLC % 21, % , WISCONSIN PUBLIC SERVICE CORPORATION % % WORLD FUEL SERVICES, INC % 2, % , Total Shared Proceeds $ 6,749, $ 177, $ 6,926, / 2/ Reservation amount (Appendix B - Page 1, line 5) apportioned among Maximum Qualifying Shippers is based on each Maximum Qualifying Shipper's proportionate contribution to total maximum rate revenues for all Maximum Qualifying Shippers for the calendar year (Settlement - Appendix F, Section B.6(a)). Usage amount (Appendix B - Page 1, line 8) apportioned among Qualifying Shippers is based on each Qualifying Shipper's proportionate contribution to total usage revenue forall Qualifying Shippers for the calendar year (Settlement - Appendix F, Section B.6(b)).