Hydro One Green Button Connect My Data (CMD)

Hydro One's Green Button Connect My Data implementation, mandated by Ontario Regulation 633/21. A registered third-party vendor obtains an OAuth 2.0 authorization code after the customer authenticates with Hydro One and consents, then retrieves that customer's electricity usage and billing data as NAESB ESPI XML. The live authorization surface at https://www.hydroone.com/green-button-cmd-home was observed serving a real Green Button authorization request carrying ESPI function-block scope syntax (FB=1_3_4_5_13_15_16_31_37_39_51_53_54_55_56_57_58_59_60_64_65;historyLength=32148000) for a third-party redirect URI. Hydro One does not publish the CMD resource base URI, an OpenAPI definition, or any endpoint reference — Client ID, Client Secret, test accounts, and URI(s) are issued privately during vendor onboarding, followed by a 90-day connectivity test and an exchange of RSA 2048-bit certificates over TLS.

API entry from apis.yml

apis.yml Raw ↑
aid: hydro-one:hydro-one-green-button-connect-my-data
name: Hydro One Green Button Connect My Data (CMD)
description: Hydro One's Green Button Connect My Data implementation, mandated by Ontario Regulation 633/21.
  A registered third-party vendor obtains an OAuth 2.0 authorization code after the customer authenticates
  with Hydro One and consents, then retrieves that customer's electricity usage and billing data as NAESB
  ESPI XML. The live authorization surface at https://www.hydroone.com/green-button-cmd-home was observed
  serving a real Green Button authorization request carrying ESPI function-block scope syntax (FB=1_3_4_5_13_15_16_31_37_39_51_53_54_55_56_57_58_59_60_64_65;historyLength=32148000)
  for a third-party redirect URI. Hydro One does not publish the CMD resource base URI, an OpenAPI definition,
  or any endpoint reference — Client ID, Client Secret, test accounts, and URI(s) are issued privately
  during vendor onboarding, followed by a 90-day connectivity test and an exchange of RSA 2048-bit certificates
  over TLS.
humanURL: https://www.hydroone.com/saving-money-and-energy/green-button/third-party-apps
tags:
- Green Button
- Connect My Data
- ESPI
- Energy Data
- OAuth2
- Consumer Data
properties:
- type: Documentation
  url: https://www.hydroone.com/saving-money-and-energy/green-button
- type: Documentation
  url: https://www.hydroone.com/saving-money-and-energy/green-button/third-party-apps
- type: TermsOfService
  url: https://www.hydroone.com/saving-money-and-energy/green-button/third-party-terms-and-conditions
- type: SignUp
  url: https://www.hydroone.com/saving-money-and-energy/green-button/third-party-onboarding-form
- type: GettingStarted
  url: https://www.hydroone.com/saving-money-and-energy/green-button/third-party-apps
- type: Authentication
  url: https://www.hydroone.com/green-button-cmd-home
- type: Authentication
  url: authentication/hydro-one-authentication.yml
- type: OAuthScopes
  url: scopes/hydro-one-scopes.yml
- type: Sandbox
  url: sandbox/hydro-one-sandbox.yml
- type: Regulation
  url: https://www.ontario.ca/laws/regulation/210633
- type: Standard
  url: https://www.greenbuttonalliance.org/
- type: Regulator
  url: https://www.oeb.ca/consumer-information-and-protection/green-button