generated: '2026-07-27' method: searched source: https://www.pjm.com/markets-and-operations/etools/data-miner-2/data-miner-2-release-notes.aspx docs: https://www.pjm.com/markets-and-operations/etools/data-miner-2/data-miner-2-release-notes.aspx api: PJM Data Miner 2 API scheme: 'YY.MM release naming, dated per environment (training release date, then production release date)' current: '25.11' cadence: >- Irregular; roughly one to four releases a year in recent years. Changes are also presented monthly at the PJM Tech Change Forum. note: >- Recent window only — PJM's release-notes page carries the full history back to 2017 and remains the source of truth. Sibling eTools (Account Manager, DR Hub, eDART, eGADS, Emergency Procedures, Markets Gateway, MSRS, PJM Now, Planning Center, TO Connection, Voting, PJM Website) each publish their own release-notes page under the same /markets-and-operations/etools/ tree. entries: - version: '25.11' training_date: '2025-11-19' production_date: '2025-11-19' breaking: false summary: Enhancements to feeds. changes: - 'Daily Generation Capacity: date-conversion defect fixed; data re-loaded from 2012 onward.' - 'Five Minute Marginal Emission Rates and Hourly Marginal Emission Rates: feed descriptions enhanced.' - 'Settlements Verified Hourly LMPs: feed update availability updated.' - 'Day-Ahead Ancillary Services: column descriptions updated.' - version: '25.09' training_date: '2025-08-30' production_date: '2025-09-30' breaking: true summary: Column renames and a column removal across two regulation feeds. changes: - 'Regulation Prices: reserve_quantity renamed regulation_quantity; reserve_requirement renamed regulation_requirement; performance_clearing_price renamed mileage_clearing_price; Marginal Benefits Factor column removed.' - 'Regulation Market Results: RegA column naming updated; RegA/RegD hourly mileage columns now return NULL and are documented as retired.' - version: '24.12' training_date: '2024-11-16' production_date: '2024-12-17' breaking: false summary: Enhancement to one feed. changes: - 'Synchronized Reserve Events: new column indicating the percentage of total megawatts deployed.' - version: '23.12' production_date: '2023-10-26' breaking: false summary: Two new feeds. changes: - 'New feed: Five Minute PAI Intervals — preliminary performance assessment intervals on a five-minute basis.' - 'New feed: Verified Performance Assessment Intervals — final PAI data.' - version: '23.10' production_date: '2023-10-26' breaking: false summary: Enhancements to the Instantaneous Load feed. changes: - Timestamps now end on 5s and 0s. - UG zone added. - Feed description enhanced to indicate the region-to-zone summation. - version: '23.07' production_date: '2023-07-19' breaking: false summary: Decimal precision reverted to pre-EMS-upgrade values on four feeds. changes: - 'Area Control Error: Area Control Error column precision 2.' - 'Operational Reserves: Reserve MW column precision 2.' - 'Instantaneous Wind Generation: Wind Generation MW column precision 0.' - 'Instantaneous Dispatch Rates: Instantaneous Dispatch Rate column precision 0.' - version: '23.02' training_date: '2023-02-08' production_date: '2023-02-16' breaking: true summary: Two new emissions feeds; a mandatory-parameter change on five-minute LMPs. changes: - 'New feed: Hourly Marginal Emission Rates.' - 'New feed: Hourly Total Emissions, broken down by fuel type.' - 'Generation by Fuel Type: generation MW now averaged over the previous 12 intervals within the hour rather than the interval closest to the top of hour.' - 'Real-Time Unverified Five Minute LMPs: the date-time parameter became a MANDATED input for the API call.' - version: '22.12' production_date: '2022-12-15' breaking: false summary: New subzone column on two reserve feeds. changes: - New subzone column added to Reserve Subzone Buses and Reserve Subzone Resources. - version: '22.11' production_date: '2022-11-17' breaking: false summary: One new feed. changes: - 'New feed: Annual Zonal NSPL — network service peak load MW by transmission zone.' - version: '22.10' production_date: '2022-10-20' breaking: true summary: Posting-frequency change and a column removal on the ancillary market results feeds. changes: - 'Real-Time Ancillary Service Market Results: posting frequency moved from monthly to daily (business days, after verification).' - 'Day-Ahead Ancillary Service Market Results: Tier 1 MW column removed.' - version: '22.09' training_date: '2022-09-16' production_date: '2022-09-29' breaking: true summary: >- The Reserve Price Formation release — the largest recent change. New feeds, feed retirements, granularity changes and reserve-name changes. changes: - 'reserve_market_results: granularity changed from hourly to five minutes; new subzones added.' - 'New feed da_reserve_market_results (Day-Ahead Ancillary Service Markets results).' - 'New feed da_ancillary_services (Day-Ahead Ancillary Service LMPs).' - 'New feeds sync_pri_reserves_buses_list and sync_pri_reserves_resources_list.' - 'New feeds sync_reserve_prelim_billing, non_sync_reserve_prelim_billing, secondary_nonsync_reserve_prelim_billing.' - 'dispatched_reserves and rt_dispatch_reserves: new reserve types/areas and columns; reserve type names singularised.' - 'RETIRED: Day-Ahead Scheduling Reserve, Non-Synchronized Reserve, RTO Synchronized Reserve Preliminary Billing Data, Settlements Verified Five Minute Ancillary LMPs, Settlements Verified Hourly Ancillary LMPs.' - version: '22.04' production_date: '2022-04-28' breaking: true summary: TLS 1.0/1.1 retired for the Data Miner user interface and API; one feed defect fix. changes: - 'Data Miner UI and API stopped supporting TLS 1.0 and TLS 1.1 after this release.' - 'Energy Market Generation Offers: 10 additional bid-segment columns added and data reposted for bid dates 2021-01-05 to 2021-11-30.' guide_revisions: - version: '15' date: '2026-02-10' summary: Updated non-member access request instructions; updated security requirements in section IV(J). - version: '14' date: '2025-09-26' summary: Newer code samples and updates covering the new security tooling protecting Data Miner 2. - version: '13' date: '2023-09-22' summary: Updated screen captures and account-creation steps for the API portal redesign. - version: '12' date: '2020-07-15' summary: Dropped "2" from "Data Miner 2"; added archived-data information.