2026-05709RuleWallet

Energy Firms Must Adopt XBRL-CSV for Quarterly Report Filings

Published Date: 3/24/2026

Rule

Summary

Starting May 26, 2026, energy companies must file their Electric Quarterly Reports using a new, easier-to-use digital format called XBRL-CSV. This update affects Regional Transmission Organizations and Independent System Operators, helping them share clearer market data while cutting down on paperwork and costs over time. The changes boost transparency and make future updates smoother for everyone involved.

Analyzed Economic Effects

7 provisions identified: 4 benefits, 1 costs, 2 mixed.

XBRL-CSV Becomes EQR Filing Standard

If your company files Electric Quarterly Reports (EQRs), FERC requires you to submit them in the XBRL-CSV format instead of XML, CSV, or the webform starting May 26, 2026. The rule says there will be an initial implementation burden, but FERC expects lower preparation and compliance costs over time and improved data quality and transparency.

RTOs/ISOs Must Produce XBRL-CSV Transaction Reports

FERC requires Regional Transmission Organizations (RTOs) and Independent System Operators (ISOs) to produce market participant transaction data reports in XBRL-CSV that follow the FERC EQR taxonomies. Sellers can use those RTO/ISO reports to prepare their EQR submissions.

FERC Templates and Simplified No-Change Filing Option

FERC will provide pre-formatted CSV FERC Templates plus a JSON metadata file to help Sellers create XBRL-CSV submissions, and Sellers that only report Identification or Identification and Contract data with no changes may simply confirm there are no changes instead of re-submitting full files. FERC says templates and the simplified option should reduce burden for smaller Sellers.

Refiling Policy Retained — Up to 12 Quarters

FERC retains its EQR refiling policy requiring Sellers to refile up to 12 quarters when there are material corrections or material omissions to previously filed EQRs. Sellers must correct and refile affected prior-quarter reports within that twelve-quarter window.

Certain EQR Data Fields Eliminated

FERC removes several data reporting requirements from the EQR: Sellers no longer must report transmission capacity reassignment information, identify index price publisher(s), or identify which exchange or broker was used for transactions. FERC says this streamlines quarterly filings.

Quarterly Filing Window Extended to Four Months

FERC extends the EQR quarterly filing window so Sellers have up to four months after the end of the quarter to file their reports. This gives filers more time to assemble and check EQR data each quarter.

Multiple Files, Rolling Submissions, and API Options

The new system allows multiple data files to be submitted for a single quarter and gives an option to file data on a rolling basis before the filing window closes. FERC will consider system capabilities for third-party software submissions and API-based filing status notifications during system design and in a future order.

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Key Dates

Published Date
Rule Effective
3/24/2026
5/26/2026

Department and Agencies

Department
Independent Agency
Agency
Energy Department
Federal Energy Regulatory Commission
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