# Hydro Ottawa Authorization API

**Canonical:** https://apis.io/apis/hydro-ottawa/hydro-ottawa-authorization-api/  
**Provider:** Hydro Ottawa — https://apis.io/providers/hydro-ottawa/  
**Base URL:** https://sandbox.greenbuttonalliance.org:8443/DataCustodian  
**Documentation:** https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button

Hydro Ottawa Authorization API is one of 4 APIs that [Hydro Ottawa](https://apis.io/providers/hydro-ottawa/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Authorization. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and authentication docs.

Authorization endpoints

## Operations (2)

| Method | Path | Summary |
|---|---|---|
| GET | `/espi/1_1/resource/Authorization` | Find all Authorizations [FB_3] |
| GET | `/espi/1_1/resource/Authorization/{authorizationId}` | Retrieve Authorization by Id [FB_3] |

## Machine-readable artifacts (8)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/hydro-ottawa/refs/heads/main/openapi/hydro-ottawa-authorization-api-openapi.yml
- **Documentation** — https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
- **Documentation** — https://hydroottawa.com/en/accounts-services/services/green-button/green-button-and-third-party-registration
- **Registration** — https://ottawaonboarding.savagedata.com/
- **Authentication** — https://hydroottawa.savagedata.com/Connect/Authorize
- **Certification** — https://www.greenbuttonalliance.org/testing
- **Documentation** — https://www.canlii.org/en/on/laws/regu/o-reg-633-21/latest/o-reg-633-21.html
- **Documentation** — https://www.oeb.ca/sites/default/files/OEB-Staff-Guidance-for-Implementation-of-Green-Button-20211101.pdf

## Other Hydro Ottawa APIs (3)

- [Hydro Ottawa Application Information API](https://apis.io/apis/hydro-ottawa/hydro-ottawa-applicationinformation-api/)
- [Hydro Ottawa Batch API](https://apis.io/apis/hydro-ottawa/hydro-ottawa-batch-api/)
- [Hydro Ottawa Usage Point API](https://apis.io/apis/hydro-ottawa/hydro-ottawa-usagepoint-api/)

## Tags

Authorization

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