Hydro One · OAuth Scopes

Hydro One OAuth Scopes

OAuth 2.0 derived

Hydro One uses OAuth 2.0 but publishes no discrete scopes — access is governed by the grant itself (e.g. client-credentials or role-based authorization) rather than per-scope consent.

This index is generated from the provider’s OpenAPI security definitions (and, where available, its documented scope reference) and refreshes on every APIs.io network build. Browse every provider’s scopes at scopes.apis.io.

EnergyCanadaUtilitiesElectricityGridSmart MeteringGreen ButtonEnergy DataTransmissionDistribution

Scopes: 0 Flows: Method: derived

Scopes (0)

Hydro One implements OAuth 2.0 but publishes no discrete scopes — access is governed by the grant itself (client-credentials or role-based authorization) rather than per-scope consent.

Hydro One publishes no scope reference. This artifact records the NAESB ESPI function-block scope syntax observed on a live Green Button Connect My Data authorization request against Hydro One's authorization surface (recorded in review.yml during the 2026-07-27 review of a publicly indexed instance of https://www.hydroone.com/green-button-cmd-home). The individual function-block identifiers are defined by the NAESB REQ.21 ESPI standard, not by Hydro One, and Hydro One publishes no mapping of block id to meaning — so no per-block descriptions are asserted here. Values are recorded verbatim, unexpanded.

📄 Provider scope reference:

Source

OAuth Scopes

generated: '2026-07-27'
method: derived
source: review.yml
note: >-
  Hydro One publishes no scope reference. This artifact records the NAESB ESPI
  function-block scope syntax observed on a live Green Button Connect My Data
  authorization request against Hydro One's authorization surface (recorded in
  review.yml during the 2026-07-27 review of a publicly indexed instance of
  https://www.hydroone.com/green-button-cmd-home). The individual function-block
  identifiers are defined by the NAESB REQ.21 ESPI standard, not by Hydro One,
  and Hydro One publishes no mapping of block id to meaning — so no per-block
  descriptions are asserted here. Values are recorded verbatim, unexpanded.
scheme: green-button-cmd-oauth2
scope_model: naesb-espi-function-blocks
syntax: 'FB=<function block ids separated by underscores>;historyLength=<seconds>'
standard:
  name: NAESB REQ.21 Energy Services Provider Interface (ESPI)
  version_required_in_ontario: '3.3'
  reference: https://www.greenbuttonalliance.org/
  developer_guide: https://greenbuttonalliance.github.io/OpenESPI-GreenButton-API-Documentation/
observed_scope:
  raw: 'FB=1_3_4_5_13_15_16_31_37_39_51_53_54_55_56_57_58_59_60_64_65;historyLength=32148000'
  function_blocks:
  - '1'
  - '3'
  - '4'
  - '5'
  - '13'
  - '15'
  - '16'
  - '31'
  - '37'
  - '39'
  - '51'
  - '53'
  - '54'
  - '55'
  - '56'
  - '57'
  - '58'
  - '59'
  - '60'
  - '64'
  - '65'
  history_length_seconds: 32148000
  observed_on: '2026-07-27'
  observed_at: https://www.hydroone.com/green-button-cmd-home
  confidence: medium
  confidence_note: >-
    Single observation of one onboarded third party's authorization request. It
    evidences the scope syntax Hydro One accepts; it is not a published list of
    the scopes Hydro One grants, and other vendors may be issued different
    function-block sets.
scopes: []
scopes_note: >-
  No enumerated, documented scope list exists on any Hydro One surface. The
  function-block set a vendor receives is negotiated during onboarding.
related:
- authentication/hydro-one-authentication.yml
- conformance/hydro-one-conformance.yml

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