Good Energy
Good Energy is a British renewable energy supplier and green-technology installer founded in 1999 and headquartered in Chippenham, Wiltshire, acquired outright by Abu Dhabi based Esyasoft Investment Holding in March 2025 for GBP 99.4 million. It sits on the retail edge of the GB electricity value chain: a licensed supplier buying 100% renewable power directly from more than 2,000 British generators, the largest voluntary administrator of the Feed-in Tariff, an export/Smart Export Guarantee counterparty, and an installer of solar, batteries, heat pumps and EV chargers. Its API posture is honest and thin. The United Kingdom mandated smart-metering INFRASTRUCTURE, not a consumer data right: Good Energy is a Balancing and Settlement Code and Retail Energy Code party operating DCC-adopted SMETS2 smart meters — verified through an Ofgem regulatory-sandbox decision naming Good Energy Ltd and through Elexon BSC modification P459, which Good Energy itself raised to allow different supplier agents on import and export MSIDs where DCC-adopted smart meters are installed. That obligation produces no public API whatsoever. There is no UK equivalent of the Australian Consumer Data Right binding Good Energy, no Green Button, and no accredited-recipient scheme. No developer portal exists (developer., developers., docs. and data. subdomains do not resolve; /developers, /api and /docs return 404). Both sides are closed: consumer usage and billing data are reachable only by the account holder through the login-gated customer hub, and no open grid or market data is published — GB open energy data comes from NESO, Elexon and the DNOs, not from the supplier. The single machine-readable API artifact Good Energy exposes anonymously is the OpenID Connect discovery document of its customer-login identity provider.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Good Energy the way a machine reads it — 5 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Good Energy scores 29.1/100 (thin), with a separate agent-readiness read of 3/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Good Energy's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/good-energy/"
title="Good Energy on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/good-energy.svg"
alt="Good Energy Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/good-energy/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/good-energy/"
title="Good Energy on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/good-energy/card.svg"
alt="Good Energy Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Good Energy
Each block below is one kind of artifact we hold for Good Energy. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 1
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Good Energy Customer Identity (OpenID Connect)
The OpenID Connect / OAuth 2.0 identity provider behind Good Energy's customer hub at account.goodenergy.co.uk. It is NOT a developer-facing API and Good Energy publishes no doc...
Security Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Resources
Every other property we hold for Good Energy — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 1
Pagination, idempotency, versioning, errors, and events
Access & Security 6
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 6
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/good-energy · machine-readable index on apis.io
This is an independent, third-party profile of Good Energy, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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