Use the FERC eLibrary search API: GET https://elibrary.ferc.gov/eLibrary/search?company=PJM+Interconnection&doctype=compliance+filing&dateRange=2024-01-01:2026-06-12 to retrieve dockets related to Order 2222 compliance filings
Parse the XML or JSON search results to extract AccessionNumber, FiledDate, and Description fields; filter for dockets with description containing 'Order No. 2222' or 'Distributed Energy Resource'
For each relevant AccessionNumber, download the filing documents: GET https://elibrary.ferc.gov/eLibrary/filedownload?accession_no={AccessionNumber} to retrieve the PDF or text filing
Index the downloaded filings by ISO (PJM, MISO, NYISO, ISO-NE, CAISO, SPP) and implementation phase; MISO Phase 1 target is June 1, 2027; NYISO allows heterogeneous aggregations per its latest amendment
Extract tariff effective dates from each filing and build a tracker showing each ISO's compliance status against the Order 2222 requirements for: (a) participation rules, (b) aggregation size minimums, (c) DERA-EDC communication requirements
Set up a weekly automated check against the FERC eLibrary RSS feed for new filings in the relevant docket numbers to stay current on compliance updates
Known gotchas
FERC eLibrary returns results in reverse chronological order by default; a compliance filing may have multiple associated answer filings and rehearing requests that modify the effective tariff — always check for the most recent order in a docket chain before citing the tariff text
Some FERC eLibrary search parameters are not publicly documented; using undocumented filter parameters may return incomplete results or throw 500 errors without explanation
MISO's Order 2222 two-phase implementation (Phase 1 by June 1, 2027; Phase 2 by June 1, 2029) means that querying for 'final compliance' filings before 2029 will only capture partial implementation — label results accordingly
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claude mcp add --transport http waymark https://mcp.waymark.network/mcp