generated: '2026-07-27'
method: searched
source: https://developer.ercot.com/applications/pubapi/relnotes/
description: >-
  ERCOT's Public Data API release notes are a dated, public changelog organised by release train
  (YYYY-Rn). Entries are additive almost without exception — new EMIL data products and new report
  artifacts — with retirements handled separately on the Deprecation Notices page. The December 2025
  release (2025-R11) is the largest in the API's history: the production implementation of Real-Time
  Co-optimization Plus Batteries (RTC+B) added 32 new data products and 13 new artifacts in one go.
url: https://developer.ercot.com/applications/pubapi/relnotes/
scheme: release train (YYYY-Rn), tied to ERCOT market implementations
current_version: '1.0'
current_release: 2025-R11
entries:
- version: 2025-R11
  date: '2025-12-05'
  breaking: true
  highlights:
  - Production implementation of Real-Time Co-optimization Plus Batteries (RTC+B).
  - 32 new data products released, including NP6-323-CD/NP6-324-CD/NP6-325-CD real-time price adders, NP6-331-CD/NP6-332-CD real-time capacity clearing prices, NP4-212-CD DAM and SCED ancillary service demand curves, and NP4-791-CD day-ahead and real-time system-wide offer caps.
  - 13 new artifacts on existing products, notably the np3-911-er 2d_agg_dam_as_offers_* family that replaces the retired 2d_agg_as_offers_* endpoints.
  - 5 further products released as historic file download only, including EIA-930-ER Daily Balancing Authority Operations Report.
  - Same release retires a set of pre-RTC+B endpoints — see lifecycle/ercot-lifecycle.yml.
- version: 2025-R5
  date: '2025-05-29'
  breaking: false
  highlights:
  - Initial launch of the ESR (Energy Storage Resource) Public Data API.
  - New endpoint GET /rptesr-m/4_sec_esr_charging_mw returning four-second ESR charging telemetry.
- version: 2025-R4
  date: '2025-04-24'
  breaking: false
  highlights:
  - Five products added as historic file download only, including NP6-792-ER and NP6-793-ER historical real-time price adders, NP3-108 monthly demand response from load resources, NP1-346-ER unplanned resource outages and NP4-765-ER ESR integration report.
- version: 2025-R2
  date: '2025-02-27'
  breaking: false
  highlights:
  - Support for historic file-only product capabilities added.
  - NP4-494-ER Exceptional Fuel Cost Submission Report released as historic file download.
- version: 2024-R11
  date: '2024-12-11'
  breaking: false
  highlights:
  - Monthly archives now available for products with a daily or higher generation frequency.
- version: 2024-R9
  date: '2024-09-26'
  breaking: false
  highlights:
  - NP4-442-CD Hourly System-wide and Regional Wind Forecasts by Model released.
  - Artifact structure updated across the wind and solar production products (NP4-732/733/737/738/742/743/745/746-CD) as part of PR373-01 Forecast Presentation Platform.
- version: 2024-R8
  date: '2024-08-22'
  breaking: false
  highlights:
  - NP1-301 60-Day COP Adjustment Period Snapshot released.
- version: 2024-R7
  date: '2024-07-25'
  breaking: false
  highlights:
  - NP3-765-CD Approved DC Tie Schedules released.
- version: 2024-R4
  date: '2024-04-25'
  breaking: false
  highlights:
  - defaultFilter added to the base query on the "View Data" web UI page.
- version: 2024 GA Release
  date: '2024-02-16'
  breaking: false
  highlights:
  - General availability launch of the Public Data API.
  - Data access for public data products, plus historic file access spanning at least seven years.
- version: 2023 Beta Release
  date: '2023-12-11'
  breaking: false
  highlights:
  - Initial PUBAPI beta with 30 EMIL data products covering outage capacity, load forecasts, wind and solar production, DAM and RTM prices, 60-day disclosures and settlement point prices.
related:
  deprecations: https://developer.ercot.com/applications/pubapi/deprecation-notices/
  lifecycle: lifecycle/ercot-lifecycle.yml