# Toronto Hydro

**Canonical:** https://apis.io/providers/toronto-hydro/  
**Website:** https://www.torontohydro.com/  
**APIs profiled:** 2

Toronto Hydro is the municipally owned local electricity distribution company (LDC) for the City of Toronto, delivering power to roughly 800,000 residential and business customers across Canada's largest city. It sits in the wires-and-meters layer of Ontario's electricity value chain — it does not generate power and it does not run the wholesale market (that is IESO) — so the only customer-facing data it owns is smart-meter consumption, billing and account data. Its API posture is a clean example of a mandate that produced an implementation but not a developer product — Ontario's O. Reg. 633/21 under the Electricity Act, 1998 compelled rate-regulated electricity and gas utilities to offer Green Button Download My Data and Connect My Data conforming to NAESB REQ.21 ESPI v3.3 by 1 November 2023, and Toronto Hydro runs both — customer-facing Download My Data and Connect My Data pages behind its account login, a published third-party terms-and-conditions document, and a live third-party onboarding portal operated by its platform vendor Savage Data Systems. But there is no developer.torontohydro.com, no docs. or api. subdomain, no published base URI, no OpenAPI, and no self-serve keys. Consumer data is available only to companies that apply, pass a connectivity test and sign the third-party terms; market and grid data are not published openly at all. Mandated, implemented, and completely gated.

## Kin Score — 34.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 34.3).

| Facet | Score |
|---|---|
| Discoverability | 77.8 |
| Contract Quality | 11.5 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 15.8 |
| Developer Ergonomics | 42.3 |
| Commercial Clarity | 27.6 |
| Access Clarity | 27.6 |

Regulatory layer — **Energy & Utilities**: 56.8 (matched via tags).

## Agent readiness — 38.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | na |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## APIs (2)

- **Toronto Hydro Green Button Connect My Data** — Toronto Hydro's Green Button Connect My Data (CMD) implementation, required of rate-regulated Ontario electricity utilities by O. Reg. 633/21 and built to the NAESB REQ.21 Energ...
- **Toronto Hydro Green Button Download My Data** — Toronto Hydro's Green Button Download My Data (DMD) implementation, also required by O. Reg. 633/21 and built to NAESB REQ.21 ESPI v3.3. A Toronto Hydro customer signs in to the...

## Security (2)

- **Toronto Hydro Authentication** — oauth2 · 1 scheme
- **Toronto Hydro Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Energy, Canada, Utilities, Electricity, Smart Metering, Green Button, Grid, Ontario, Consumer Data, Electricity Distribution

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/toronto-hydro/). Scores are computed from the provider's own public artifacts under a published rubric.