Litigation Updates & Reports

Updates Between Apr 09, 2026 and May 06, 2026

05
May
Base ROE

Consumer Advocates answer NETOs’ Apr 20 Request for Rehearing

05
May
Order 917 (EQR Filings)

Notice of New Webpage and Staff Guidance on Initial Implementation of Order 917

04
May
Base ROE

VT DPS answer VTransco Apr 20 motion

01
May
D&E Agreement Cancellation NSTAR/Mayflower Wind

FERC accepts notice of D&E Agreement cancellation, eff. Jan 8, 2026

30
Apr
New Base ROE - Attachment F Revisions

PTO-AC files Attachment F Revisions, including an increase of the base ROE to 11.39%, eff. Jun 30, 2026

30
Apr
FAP Obligation Roll-Off Timing Revisions

FERC accepts, eff. May 1, 2026, FAP revisions that align the timing of when a financial assurance obligation “rolls off” of a Market
Participant’s FA requirements with the actual duration of the associated payment risk (addressing a previous gap under which certain obligations would roll off when invoiced rather than when paid, including in the Monthly Capacity Charge component of the FCM Delivery Financial Assurance requirement and in the FTR Settlement Financial Assurance calculation). 

30
Apr
Membership

New Member: Standard Normal Energy; Terminations: CS Berlin Ops; RWE Clean Energy Asset Holdings; RWE Clean Energy  Solutions; Westfield ESS; and Wolverine Holdings

28
Apr
IA Amended/Restated: UI / McCallum Enterprises

UI files an Amended and Restated Interconnection Agreement with McCallum Enterprises (amendments primarily to enable McCallum to participate in the New England Markets)

24
Apr
Membership

FERC accepts Thunderhead Power’s membership 

23
Apr
Viability Assessment Agreement - PSNH/Granite Shore Power

PSNH submits for filing a Viability Assessment Agreement with Granite Shore Power.  The Agreement proposes the terms and conditions under which PSNH will perform an interconnection viability study to study possible adverse impacts to PSNH’s system and the supporting infrastructure needed to mitigate such possible impacts for Customer’s potential interconnection to PSNH’s transmission system

22
Apr
2025-26 Transmission Rate Filing (NESCOE Eversource Formal Challenge)

NH OCA submits comments supporting NESCOE’s Eversource Formal Challenge

22
Apr
203 Application: Vistra/Cogentrix (Nautilus Power et al.)

Vistra and Cogentrix answer PJM IMM and ISO-NE IMM comments

22
Apr
Transmission Rate Annual (2025-26) Filing (NESCOE Eversource Formal Challenge)

Eversource response to NESCOE Formal Challenge

21
Apr
ISO-NE 2025 FERC Form 582 (Annual Charges Report)

ISO-NE files 2025 FERC Form 582 (Annual Charges Report) 

20
Apr
Base ROE
EL11-66-006

NETOs, VTransco request rehearing of Opinion 594

17
Apr
17
Apr
Membership

ISIO-NE submits notice of Apr 15 suspension of Marble River from New England Markets 

16
Apr
DASI Complaint (A. Gaal)

ISO-NE responds to A. Gaal Complaint, urging it be dismissed or denied.

16
Apr
203 Application: Vistra/Cogentrix (Nautilus Power et al.)

Applicants respond to ISO-NE IMM’s objection to providing, even subject to a Protective Agreement, a copy of the confidential, non-public information that it filed with the FERC in this proceeding.

15
Apr
LGIAs: Versant/Evergreen III, Stetson Holdings, Stetson II

ISO-NE and Versant file 3 replacement LGIAs (one each of Evergreen III, Stetson Holdings, and Stetson II) as a result of each facility reestablishing Capacity Resource Network Interconnection Service (CNRIS) and 2) a change in ownership for the units. 

15
Apr
American Efficient Penalties Order

Finding “American Efficient, LLC and its affiliates … stole half a billion dollars from hard-working Americans by collecting compensation for fake “energy efficiency resources” and its “money-for-nothing scheme blatantly violated” tariffs and “manipulated multiple electric markets over the course of many years,” the FERC’s Penalties Order requires American Efficient to disgorge approximately $410 million in unjust profits and imposes a civil penalty of $722 million.

15
Apr
LFTR Implementation Quarterly Status Reports

ISO-NE files its 70th quarterly report

15
Apr
203 Application: Vistra/Cogentrix (Nautilus Power et al.)

PJM IMM withdraws its request for confidential information from ISO-NE

14
Apr
Base ROE - Writ for Stay

Avangrid (CMP, UI) and Eversource (CL&P, NSTAR, PSNH) petition the DC Circuit Ct, of Appeals for a writ, under the All Writs Act, staying Opinion 594 with respect to the Oct 16, 2014-Mar 19, 2026 refund period, arguing that, absent a stay, Opinion 594 will cause them and their customers immediate, irreversible financial and operational harm that cannot be undone even if Opinion 594 is later vacated

14
Apr
Base ROE - Refund Obligation Extension

FERC extends the Opinion 594 deadlines to complete refunds to and including May 20, 2027, and to submit the refund report to and including Jun 4, 2027.

13
Apr
Base ROE - Refund Obligation: Request for Stay

Stay Opponents* oppose Indicated TOs** Apr 2 Request for Stay of Opinion 594 Refund Obligation.

 

*Stay Opponents: CT PURA, CT AG, CT OCC, MA AGO, MA DPU, MOPA, NH OCA, RI Div, MMWEC, AIM, TEC, Power Options, IECG, and NHEC 

** Indicated TOs: CMP, UI (Avangrid) and CL&P, NSTAR, PSNH (Eversource)

13
Apr
Base ROE - Refund Obligation Extension of Time

Extension Respondents* recommend any extension to the Opinion 594 Refund Obligation be limited to no more than 9 months

 

*Extension Respondents are:  the the MA AGO, MA DPU, CT PURA, CT OCC, MOPA, NH OCA, RI Div, MMWEC, AIM, TEC, Power Options, IECG, NHEC

13
Apr
203 Application: Vistra/Cogentrix (Nautilus Power et al.)

ISO-NE IMM objects to Vistra/Cogentrix request for disclosure, subject to a standard FERC protective agreement, of the confidential, non-public version of the IMM’s Market Power Assessment Report filed in this proceeding

2026 Reports

2015 Reports

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