Hydro Ottawa

Hydro Ottawa Holding Inc. is a private corporation 100 percent owned by the City of Ottawa, and the parent of Hydro Ottawa Limited — the regulated local distribution company (LDC) that delivers electricity to roughly 372,000 customers in Ottawa and Casselman, Ontario — alongside Portage Power (Ontario's largest municipally-owned renewable generator, with run-of-river hydroelectric plants at Chaudière Falls and elsewhere in Ontario, Quebec and New York plus solar installations across Ottawa), Envari (energy solutions) and Hiboo Networks (fibre). It sits at the wires-and-meter end of the Canadian value chain: it does not run the market — that is IESO — and it is not a competitive retailer, it is the monopoly distributor that owns the smart meter, the interval data and the billing relationship. Its API posture exists because Ontario legislated it. Ontario Regulation 633/21 (Energy Data) under the Electricity Act, 1998 compels roughly sixty electricity and natural gas utilities in the province to implement Green Button Download My Data and Green Button Connect My Data to the NAESB REQ.21 ESPI v3.3 standard and to have those implementations certified by the Green Button Alliance — a province-level, standard-specific consumer data mandate with no Canadian national equivalent. Hydro Ottawa states on its own site that it offers both services free of charge and that third parties must complete its onboarding process and certify with the GBA. Two live surfaces back that up: a customer Green Button authorization portal at https://hydroottawa.savagedata.com/Connect/Authorize (HTTP 200) and an anonymously reachable third-party developer registration application at https://ottawaonboarding.savagedata.com/ (HTTP 200), both operated by the North Bay vendor Savage Data Systems. What could NOT be verified is the thing the mandate actually requires: no ESPI base URI is published anywhere, the vendor host is a catch-all Blazor SPA that returns HTTP 200 with identical HTML for every path including invented ones, no OpenID Connect discovery document is served anonymously, and no public Green Button Alliance certificate register listing Hydro Ottawa by name could be found. The mandate is recorded here as claimed-and-plausibly- operating, not as verified. Everything else is closed: hydroottawa.com returns 404 for /developers, /api, /docs, /data, /openapi.json and /swagger.json; developers.hydroottawa.com does not resolve and developersdev.hydroottawa.com answers HTTP 530 through Cloudflare; api.hydroottawa.com exists but returns 403 at root and 404 on every path; the github.com/hydroottawa organization has existed since 2015 with zero public repositories; and the City of Ottawa open data portal carries 682 datasets, none of them Hydro Ottawa's. The one genuinely open, anonymous, machine-readable feed carrying Hydro Ottawa data — live outage counts under the KUBRA StormCenter instance behind outages.hydroottawa.com — is undocumented vendor infrastructure that Hydro Ottawa does not publish as a product, and it is deliberately not listed as an API here. Hydro Ottawa is therefore a utility with a mandated consumer data API it does not document, and no open market data at all.

Hydro Ottawa publishes 4 APIs on the APIs.io network, including Application Information API, Authorization API, Batch API, and 1 more. Tagged areas include Energy, Canada, Ontario, Utilities, and Electricity.

Hydro Ottawa’s developer surface includes authentication, getting-started guide, signup flow, engineering blog, documentation, support, YouTube channel, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

25.5/100 emerging ▬ flat Agent 28/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Energy Canada Ontario Utilities Electricity Electricity Distribution Smart Metering Green Button ESPIMunicipal UtilityRenewables Hydroelectric Solar Demand Response Grid

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 25.5/100 · emerging

Contract Quality 2.4 / 21

Developer Ergonomics 5.2 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.5 / 10

Discoverability 5.0 / 9

Regulatory Posture 8.5 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/hydro-ottawa: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

Hydro Ottawa Application Information API

Application Information endpoints

Hydro Ottawa Authorization API

Authorization endpoints

Hydro Ottawa Batch API

Batch data transfer endpoints

Hydro Ottawa Usage Point API

Usage Point endpoints

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Green Button API Documentation

OPEN COLLECTION

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Hydro Ottawa Authentication

oauth2 · 1 scheme

SECURITY

Hydro Ottawa Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Hydro Ottawa Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

AgentSkill

AgentSkill

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conformance

ErrorCatalog

Lifecycle

Conventions

DataModel

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

OAuthScopes

OAuthScopes

Authentication

Authentication

Learn 1

Tutorials, courses, talks, and written guidance

YouTube

YouTube

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 6

The organization behind the API

Website

Website

Blog

BlogRSS

LinkedIn

Bluesky

Bluesky

Other 2

Properties that don't map to a standard resource type

Overlay

Overlay

Registration

Registration

Source (apis.yml)

aid: hydro-ottawa
url: https://raw.githubusercontent.com/api-evangelist/hydro-ottawa/refs/heads/main/apis.yml
name: Hydro Ottawa
kind: company
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-09-02'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Energy
- Canada
- Ontario
- Utilities
- Electricity
- Electricity Distribution
- Smart Metering
- Green Button
- ESPI
- Municipal Utility
- Renewables
- Hydroelectric
- Solar
- Demand Response
- Grid
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
description: 'Hydro Ottawa Holding Inc. is a private corporation 100 percent owned by the City of Ottawa, and the parent of
  Hydro Ottawa Limited — the regulated local distribution company (LDC) that delivers electricity to roughly 372,000 customers
  in Ottawa and Casselman, Ontario — alongside Portage Power (Ontario''s largest municipally-owned renewable generator, with
  run-of-river hydroelectric plants at Chaudière Falls and elsewhere in Ontario, Quebec and New York plus solar installations
  across Ottawa), Envari (energy solutions) and Hiboo Networks (fibre). It sits at the wires-and-meter end of the Canadian
  value chain: it does not run the market — that is IESO — and it is not a competitive retailer, it is the monopoly distributor
  that owns the smart meter, the interval data and the billing relationship. Its API posture exists because Ontario legislated
  it. Ontario Regulation 633/21 (Energy Data) under the Electricity Act, 1998 compels roughly sixty electricity and natural
  gas utilities in the province to implement Green Button Download My Data and Green Button Connect My Data to the NAESB REQ.21
  ESPI v3.3 standard and to have those implementations certified by the Green Button Alliance — a province-level, standard-specific
  consumer data mandate with no Canadian national equivalent. Hydro Ottawa states on its own site that it offers both services
  free of charge and that third parties must complete its onboarding process and certify with the GBA. Two live surfaces back
  that up: a customer Green Button authorization portal at https://hydroottawa.savagedata.com/Connect/Authorize (HTTP 200)
  and an anonymously reachable third-party developer registration application at https://ottawaonboarding.savagedata.com/
  (HTTP 200), both operated by the North Bay vendor Savage Data Systems. What could NOT be verified is the thing the mandate
  actually requires: no ESPI base URI is published anywhere, the vendor host is a catch-all Blazor SPA that returns HTTP 200
  with identical HTML for every path including invented ones, no OpenID Connect discovery document is served anonymously,
  and no public Green Button Alliance certificate register listing Hydro Ottawa by name could be found. The mandate is recorded
  here as claimed-and-plausibly- operating, not as verified. Everything else is closed: hydroottawa.com returns 404 for /developers,
  /api, /docs, /data, /openapi.json and /swagger.json; developers.hydroottawa.com does not resolve and developersdev.hydroottawa.com
  answers HTTP 530 through Cloudflare; api.hydroottawa.com exists but returns 403 at root and 404 on every path; the github.com/hydroottawa
  organization has existed since 2015 with zero public repositories; and the City of Ottawa open data portal carries 682 datasets,
  none of them Hydro Ottawa''s. The one genuinely open, anonymous, machine-readable feed carrying Hydro Ottawa data — live
  outage counts under the KUBRA StormCenter instance behind outages.hydroottawa.com — is undocumented vendor infrastructure
  that Hydro Ottawa does not publish as a product, and it is deliberately not listed as an API here. Hydro Ottawa is therefore
  a utility with a mandated consumer data API it does not document, and no open market data at all.'
apis:
- aid: hydro-ottawa:hydro-ottawa-applicationinformation-api
  name: Hydro Ottawa Application Information API
  description: Application Information endpoints
  humanURL: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  tags:
  - ApplicationInformation
  properties:
  - type: OpenAPI
    url: openapi/hydro-ottawa-applicationinformation-api-openapi.yml
  - type: Documentation
    url: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  - type: Documentation
    url: https://hydroottawa.com/en/accounts-services/services/green-button/green-button-and-third-party-registration
  - type: Registration
    url: https://ottawaonboarding.savagedata.com/
  - type: Authentication
    url: https://hydroottawa.savagedata.com/Connect/Authorize
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.canlii.org/en/on/laws/regu/o-reg-633-21/latest/o-reg-633-21.html
  - type: Documentation
    url: https://www.oeb.ca/sites/default/files/OEB-Staff-Guidance-for-Implementation-of-Green-Button-20211101.pdf
- aid: hydro-ottawa:hydro-ottawa-authorization-api
  name: Hydro Ottawa Authorization API
  description: Authorization endpoints
  humanURL: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  tags:
  - Authorization
  properties:
  - type: OpenAPI
    url: openapi/hydro-ottawa-authorization-api-openapi.yml
  - type: Documentation
    url: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  - type: Documentation
    url: https://hydroottawa.com/en/accounts-services/services/green-button/green-button-and-third-party-registration
  - type: Registration
    url: https://ottawaonboarding.savagedata.com/
  - type: Authentication
    url: https://hydroottawa.savagedata.com/Connect/Authorize
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.canlii.org/en/on/laws/regu/o-reg-633-21/latest/o-reg-633-21.html
  - type: Documentation
    url: https://www.oeb.ca/sites/default/files/OEB-Staff-Guidance-for-Implementation-of-Green-Button-20211101.pdf
- aid: hydro-ottawa:hydro-ottawa-batch-api
  name: Hydro Ottawa Batch API
  description: Batch data transfer endpoints
  humanURL: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  tags:
  - Batch
  properties:
  - type: OpenAPI
    url: openapi/hydro-ottawa-batch-api-openapi.yml
  - type: Documentation
    url: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  - type: Documentation
    url: https://hydroottawa.com/en/accounts-services/services/green-button/green-button-and-third-party-registration
  - type: Registration
    url: https://ottawaonboarding.savagedata.com/
  - type: Authentication
    url: https://hydroottawa.savagedata.com/Connect/Authorize
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.canlii.org/en/on/laws/regu/o-reg-633-21/latest/o-reg-633-21.html
  - type: Documentation
    url: https://www.oeb.ca/sites/default/files/OEB-Staff-Guidance-for-Implementation-of-Green-Button-20211101.pdf
- aid: hydro-ottawa:hydro-ottawa-usagepoint-api
  name: Hydro Ottawa Usage Point API
  description: Usage Point endpoints
  humanURL: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  tags:
  - UsagePoint
  properties:
  - type: OpenAPI
    url: openapi/hydro-ottawa-usagepoint-api-openapi.yml
  - type: Documentation
    url: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
  - type: Documentation
    url: https://hydroottawa.com/en/accounts-services/services/green-button/green-button-and-third-party-registration
  - type: Registration
    url: https://ottawaonboarding.savagedata.com/
  - type: Authentication
    url: https://hydroottawa.savagedata.com/Connect/Authorize
  - type: Certification
    url: https://www.greenbuttonalliance.org/testing
  - type: Documentation
    url: https://www.canlii.org/en/on/laws/regu/o-reg-633-21/latest/o-reg-633-21.html
  - type: Documentation
    url: https://www.oeb.ca/sites/default/files/OEB-Staff-Guidance-for-Implementation-of-Green-Button-20211101.pdf
common:
- type: Overlay
  url: overlays/hydro-ottawa-green-button-espi-overlay.yaml
- type: DomainSecurity
  url: security/hydro-ottawa-domain-security.yml
- type: OAuthScopes
  url: scopes/hydro-ottawa-scopes.yml
- type: Authentication
  url: authentication/hydro-ottawa-authentication.yml
- type: Packages
  url: packages/hydro-ottawa-packages.yml
- type: WellKnown
  url: well-known/hydro-ottawa-well-known.yml
- type: LLMsTxt
  url: llms/hydro-ottawa-llms.txt
- type: Conformance
  url: conformance/hydro-ottawa-conformance.yml
- type: ErrorCatalog
  url: errors/hydro-ottawa-problem-types.yml
- type: Lifecycle
  url: lifecycle/hydro-ottawa-lifecycle.yml
- type: Conventions
  url: conventions/hydro-ottawa-conventions.yml
- type: DataModel
  url: data-model/hydro-ottawa-data-model.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Website
  url: https://hydroottawa.com/
- type: Website
  url: https://hydroottawagroup.com/
- type: DeveloperPortal
  url: https://ottawaonboarding.savagedata.com/
- type: GettingStarted
  url: https://hydroottawa.com/en/accounts-services/services/green-button/green-button-and-third-party-registration
- type: SignUp
  url: https://ottawaonboarding.savagedata.com/
- type: Blog
  url: https://hydroottawa.com/en/about-us/blogs-articles
- type: BlogRSS
  url: https://hydroottawa.com/en/rss.xml
- type: TermsOfService
  url: https://hydroottawa.com/en/about-us/policies-and-terms/terms-use
- type: PrivacyPolicy
  url: https://hydroottawa.com/en/about-us/policies-and-terms/privacy-notice
- type: Documentation
  url: https://hydroottawa.com/en/residential/rates-billing/track-your-usage/green-button
- type: Registration
  url: https://ottawaonboarding.savagedata.com/
- type: Support
  url: https://hydroottawa.com/en/faq
- type: StatusPage
  url: https://outages.hydroottawa.com/
- type: GitHubOrganization
  url: https://github.com/hydroottawa
- type: LinkedIn
  url: https://www.linkedin.com/company/hydro-ottawa
- type: Bluesky
  url: https://bsky.app/profile/hydroottawa.bsky.social
- type: YouTube
  url: https://www.youtube.com/user/hydroottawalimited/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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