Appellate Briefs

D.C. Cir. No. 20-1419, et al. Orders, following ALJ hearing and initial decision, on  various rate and refund issues.  Panhandle Eastern Pipe Line Co., LP, 171 FERC ¶ 61,244 (2020); Opinion No. 885, 181 FERC ¶ 61,211 (2022); 183 FERC ¶ 61,148 (2023), 184 FERC ¶ 61,181 (2023); 186 FERC ¶ 61,015 (2024); 187 FERC ¶ 61,112 (2024); 188 FERC ¶  61,162 (2024); 189 FERC ¶ 61,170 (2024); and 191 FERC ¶ 61,013 (2025).

3rd Cir. No. 25-2124 Order accepting PJM-proposed Reliability Resource Initiative, enabling a one-time reliability-based expansion of the eligibility criteria for Transition Cycle #2 of PJM’s existing interconnection queue, to address near-term resource adequacy concerns.  PJM Interconnection, L.L.C., 190 FERC ¶ 61,084 (2025), order on reh’g, 192 FERC ¶ 61,075 (2025).

D.C. Cir. No. 25-1060 Order denying (but not dismissing) complaint, concerning whether Northwest Rural’s withdrawal from Tri-State violates the Basin Eastern Requirements PPA.  Northwest Rural Public Power Dist. v. Basin Elec. Power Coop., et al., 189 FERC ¶ 61,164 (2024), order on reh’g, 191 FERC ¶ 61,087 (2025).

D.C. Cir. No. 25-1064 Order rejecting amendments to Consolidated Transmission Owners Agreement, and denying complaint concerning location of PJM’s Regional Transmission Expansion Planning Protocol in the Operating Agreement.  Duquesne Light Co., et al., 189 FERC ¶ 61,181 (2024), order on reh’g, 192 FERC ¶ 61,051 (2025).

3rd Cir. No. 25-1460, et al. Order issuing preliminary permit, to study the feasibility of the York Energy Storage Waterpower Project, located near Lake Clarke, formed by the Safe Harbor Dam on the Susquehanna River in Pennsylvania; granting priority to file license application.  York Energy Storage, LLC, 189 FERC ¶ 61,123 (2024), order on reh’g, 191 FERC ¶ 61,054 (2025).

D.C. Cir. Nos. 24-1291, et al. Order granting authorizations to construct and operate CP2 LNG terminal in Louisiana and connecting CP Express pipeline from Texas to Louisiana.  Venture Global CP2 LNG, LLC and Venture Global CP Express, LLC, 187 FERC ¶ 61,199 (2024), order on reh’g, 189 FERC ¶ 61,148 (2024), order on reh’g, 191 FERC ¶ 61,153 (2025), orders on reh’g and stay, 192 FERC ¶ 61,155 and ¶ 61,157 (2025).  [motion for court stay of agency authorization, pending judicial review, denied 10/20/25]

D.C. Cir. No. 25-1045, et al. Order on remand, concerning MISO transmission owners’ base return on equity, reversing the portions of Opinion Nos. 569-A and 569-B that include the Risk Premium model in the ROE calculations.  Ass’n of Businesses Advocating Tariff Equity v. Midcontinent Indep. System Operator, Inc., 189 FERC ¶ 61,036 (2024), order on reh’g, 190 FERC ¶ 61,184 (2025).

D.C. Cir. No. 25-1092 Notice denying late intervention, in proceeding to consider Sho-Me Power’s application to surrender the license for the Niangua Hydroelectric Project in Camden County, Missouri.  Sho-Me Power Electric Cooperative, Oct. 15, 2024 Notice, order on reh’g, 190 FERC ¶ 61,028 (2025).

S. Ct. No. 25-438 Opposition/Response to a petition for certiorari, seeking further review of decision of 9th Cir. court of appeals, affirming FERC rejection of PG&E’s request for rate incentive adder for its continued participation in California ISO.  Pacific Gas and Electric Co., 185 FERC ¶ 61,243 (2023), order on reh’g, 187 FERC ¶ 61,167 (2024), affirmed, Pacific Gas and Electric Co., Nos. 24-2527, et al., 2025 WL 1912363 (9th Cir. July 11, 2025).

4th Cir. No. 24-1650, et al. Rulemaking to improve regional transmission planning and cost allocation.  Order No. 1920, Bldg. for the Future Through Elec. Reg’l Transmission Planning & Cost Allocation, 187 FERC ¶ 61,068 (2024); Order 1920-A, 189 FERC ¶ 61,126 (2024); Order No. 1920-B, 191 FERC ¶ 61,026 (2025).

5th Cir. No. 25-60127, et al. Order on MISO and SPP filings, to implement Joint Targeted Interconnection Queue framework.  Midcontinent Indep. System Operator, Inc. and Southwest Power Pool, Inc., 189 FERC ¶ 61,108 (2024), order on reh’g, 191 FERC ¶ 61,231 (2025).

D.C. Cir. No. 23-1227, et al., Responsive Supplemental Brief on Standing. Order denying complaint and waiver request, related to SPP’s interconnection studies of Cage Ranch’s planned solar generating facility. Cage Ranch Solar, LLC, et al. v. Southwest Power Pool, Inc., 183 FERC ¶ 61,138 (2023), order on reh’g, 185 FERC ¶ 61,017 (2023).

D.C. Cir. No. 23-1227, et al., Corrected Opening Supplemental Brief on Mootness. Order denying complaint and waiver request, related to SPP’s interconnection studies of Cage Ranch’s planned solar generating facility.  Cage Ranch Solar, LLC, et al. v. Southwest Power Pool, Inc., 183 FERC ¶ 61,138 (2023), order on reh’g, 185 FERC ¶ 61,017 (2023).

D.C. Cir. No. 25-1086, et al. Order denying complaint, alleging that PSCo will improperly allocate costs for its proposed Colorado Power Pathway transmission project.  Municipal Energy Agency of Nebraska, et al. v. Pub. Serv. Co. of Colorado, 189 FERC ¶ 61,099 (2024), order on reh’g, 190 FERC ¶ 61,158 (2025).  

D.C. Cir. No. 24-1253, et al. Order granting, subject to conditions, authorization to construct and operate the System Alignment Program Project, to abandon certain pipeline facilities and to construct new pipeline facilities, two new compressor stations, and appurtenant equipment in Tennessee, North Carolina, and Virginia; pre-determination of rolled-in rate treatment, and access to CEII information.  East Tennessee Natural Gas, LLC, 186 FERC ¶ 61,210 (2024), order on reh’g, 189 FERC ¶ 61,232 (2024).

5th Cir., No. 25-60304. Order accepting modification to MISO’s generator interconnection study process to implement a queue cap and exemptions to that cap.  Midcontinent Indep. System Operator, 190 FERC ¶ 61,057 (2025), order on reh’g, 191 FERC ¶ 61,157 (2025).

5th Cir. No. 25-60019, et al. Order rejecting amended Interconnection Service Agreement (ISA) among PJM, Susquehanna Nuclear, LLC, and PPL Electric Utilities Corp, to increase the amount of co-located load.  PJM Interconnection, L.L.C., 189 FERC ¶ 61,078 (2024), order on reh’g, 191 FERC ¶ 61,025 (2025).

S. Ct. Nos. 24-1304, et al.  Brief for the Federal Energy Regulatory Commission in response to petitions for certiorari, seeking Supreme Court review of Dayton Power & Light Co., et al. v. FERC, 126 F.4th 1107 (6th Cir. 2025), which affirmed FERC limitation of ROE incentives for utilities compelled under state law to join and stay in regional transmission organization, and also addressing preemption and settlement issues.  Dayton Power & Light Co., 176 FERC ¶ 61,025 (2021), order on reh’g, 178 FERC ¶ 61,102 (2022); Office of the Ohio Consumers’ Counsel v. American Electric Power Serv. Corp., et al., 181 FERC ¶ 61,214 (2022), order on reh’g, 183 FERC ¶ 61,034 (2023).

D.C. Cir. Nos. 24-1291, et al. Opposition of Respondent FERC to Motion For Stay.

8th Cir. No. 25-1769, et al. Orders denying complaints and waiver request, concerning MISO protocols, under Joint Operating Agreement with SPP, for managing congestion at a particular flowgate.   Montana-Dakota Utilities Co. v Midcontinent Indep. Sys. Operator, Inc., et al., 188 FERC ¶¶ 61,168 and 61,169 (2024), orders on reh’g, 190 FERC ¶¶ 61,162 and 61,168 (2025).