FERC adopts xBRL-CSV for filings
The The US Federal Energy Regulatory Commission (FERC) has published its final rule under Order No. 917, formally adopting the xBRL-CSV standard for Electric Quarterly Report (EQR) filings.
The rule, published in the Federal Register on 24 March 2026, also introduces a new requirement for Regional Transmission Organizations (RTOs) and Independent System Operators (ISOs) to submit market participant transaction data in xBRL-CSV format.
Under the new framework, energy companies and market operators will transition away from legacy filing formats, previously a mix of XML, CSV, and manual webform entry, to a single xBRL-CSV standard. FERC has outlined a phased implementation process, beginning with the publication of draft taxonomies and technical guidance, followed by technical conferences and a testing period before full compliance is required.
The EQR has been a cornerstone of US energy market transparency since its establishment in 2002, collecting detailed data on wholesale electricity transactions. FERC began reassessing the system’s design in 2020, and the xBRL-CSV approach was first proposed in an October 2023.
xBRL-CSV is one of the newer formats developed under the Open Information Model. Here it finds a home beyond traditional financial reporting requirements, while FERC finds more reliable market data.
Read the final rule notice here.
