# ERCOT ESR Public Data API

**Canonical:** https://apis.io/apis/ercot/ercot-esr-public-data-api/  
**Provider:** ERCOT — https://apis.io/providers/ercot/  
**Documentation:** https://apiexplorer.ercot.com/api-details#api=esrapi-apim-api

ERCOT ESR Public Data API is one of 5 APIs that [ERCOT](https://apis.io/providers/ercot/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Energy Storage, Batteries, Telemetry, and Energy Markets. The published artifact set on APIs.io includes an API reference, a changelog, and authentication docs.

Energy Storage Resource public data, launched May 29, 2025 per the ERCOT Public Data API release notes, beginning with four-second ESR charging MW telemetry (GET /rptesr-m/4_sec_esr_charging_mw). Documented in the ERCOT API Explorer as the esrapi-apim-api product. No machine-readable specification is published for this API in ERCOT's public api-specs repository, and no base URL was independently confirmed, so none is asserted here. Access follows the same subscription-key plus B2C ID token model as the Public Data API.

## Machine-readable artifacts (3)

- **APIReference** — https://apiexplorer.ercot.com/api-details#api=esrapi-apim-api
- **ChangeLog** — https://developer.ercot.com/applications/pubapi/relnotes/
- **Authentication** — https://developer.ercot.com/applications/pubapi/user-guide/registration-and-authentication/

## Other ERCOT APIs (4)

- [ERCOT Public Data API](https://apis.io/apis/ercot/ercot-public-data-api/)
- [ERCOT Web Services (EWS)](https://apis.io/apis/ercot/ercot-web-services/)
- [ERCOT MarkeTrak API](https://apis.io/apis/ercot/ercot-marketrak-api/)
- [ERCOT Retail API](https://apis.io/apis/ercot/ercot-retail-api/)

## Tags

Energy Storage, Batteries, Telemetry, Energy Markets

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/ercot/ercot-esr-public-data-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/ercot/.