Order No. 917

Key metadata

Document number

ferc-order-917-guidance-page

Type

Guidance Page

Publication date

2026-04-30

Effective date

2026-05-26

Agencies

Energy Department, Federal Energy Regulatory Commission

CFR references

18 CFR part 35

Original source

FERC guidance page

FERC EQR Reporting Updates & XBRL Transition, May 2026 (US)

FERC has issued guidance on changes to the Electric Quarterly Report (EQR) filing process, primarily reducing certain reporting requirements and outlining a future transition to a new data system.

Why it matters

Reduced Reporting Burden (Effective May 26, 2026): Filers will no longer need to report specific data points related to transmission capacity reassignments, transactions reported to index price publishers, or the use of exchange/brokerage services. This change applies to Q2 2026 EQR filings (due July 31, 2026). For battery storage and grid infrastructure operators, this means a slight reduction in the administrative burden of EQR compliance, particularly concerning certain transmission-related data. Billing Adjustments: Material billing adjustments must now be reflected through an EQR refiling, rather than using a specific "Billing Adjustment" reporting option. This clarifies and standardizes how such adjustments are handled. Future Data System (XBRL-CSV): FERC is developing a new XBRL-CSV system for EQR submissions to enhance data standardization and accessibility. While no implementation timeline is set, FERC will engage industry through draft taxonomies, technical guidance, and conferences, providing ample time for software development and testing. This future system could eventually improve the transparency and analysis of wholesale market data, which is relevant for understanding market opportunities and operational trends for battery storage and grid assets.

Who is affected

All entities currently required to file EQRs, including wholesale power sellers and transmission providers, which encompasses many battery storage operators and grid infrastructure owners.

Key timing

May 26, 2026: Effective date for the elimination of specified data reporting. July 31, 2026: First EQR filing (Q2 2026) due under the new reduced reporting requirements. No set date for XBRL-CSV: Implementation will follow a collaborative development process with industry input and technical conferences.