Ofgem website screenshot

Ofgem

Ofgem, the Office of Gas and Electricity Markets, is the non-ministerial government department that regulates the gas and electricity markets of Great Britain (England, Scotland and Wales), drawing its powers from the Gas Act 1986, the Electricity Act 1989 and the Energy Act 2023. It licenses the companies that make, transport and sell energy, sets the price cap, runs the RIIO network price controls, administers environmental and social schemes such as the Renewables Obligation, REGO and Feed-in Tariffs on behalf of government, grants and supervises the Smart Meter Communication Licence held by the Smart DCC, and imposes the Data Best Practice licence obligation that requires network licensees to treat Energy System Data as presumed open. It sits above the value chain rather than in it - it holds no customers, no meters and no wires. Its own API posture is the plain finding: Ofgem publishes NO API of any kind. There is no developer portal, no api., docs., data. or developer. subdomain, no OpenAPI, no CKAN endpoint. Market data is genuinely open but delivered as chart images, CSV and XLSX file downloads from the Ofgem Data Portal; consumer data does not exist here at all, because Great Britain mandated the smart-meter INFRASTRUCTURE rather than a consumer data right, and no CDR-equivalent obligation binds either Ofgem or the suppliers it licenses. Ofgem's two operational registers - the Electronic Public Register and the Renewable Electricity Register - are login-gated applications whose backends are undocumented and unpublished. Ofgem is therefore a regulator that demands open, discoverable, interoperable data from the industry it supervises while shipping none of it programmatically itself.

Ofgem is profiled on the APIs.io network. Tagged areas include Energy, United Kingdom, Utilities, Electricity, and Gas.

Ofgem’s developer surface includes authentication, developer portal, documentation, product news, engineering blog, support, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub
32.8/100 thin ▬ flat Agent 27/100 agent aware Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0
0 APIs
EnergyUnited KingdomUtilitiesElectricityGasEnergy MarketsRegulatorSmart MeteringOpen DataEnergy RegulationRenewablesGreat Britain

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0
Composite quality — 32.8/100 · thin
Contract Quality 7.1 / 21
Developer Ergonomics 6.5 / 17
Access Clarity 1.8 / 17
Operational Transparency 1.2 / 11
Contract Governance 0.5 / 10
Discoverability 5.8 / 9
Regulatory Posture 8.9 / 15
Agent readiness — 27/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 3 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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.
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/. This rating is computed from github.com/api-evangelist/ofgem: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 3

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

Ofgem Authentication

oauth2/openIdConnect · 2 schemes

SECURITY

Ofgem Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Ofgem Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Ofgem Scopes

5 scopes · authorizationCode

5 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

Portal
Portal
 Registry
Registry
 Registry
Registry

Documentation 4

Reference material describing how the API behaves

Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation
 Documentation
Documentation

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown
WellKnown
 LLMsTxt
LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle

Access & Security 7

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Security
Security
 Authentication
Authentication
 OAuthScopes
OAuthScopes
 VulnerabilityDisclosure
VulnerabilityDisclosure
 SecurityTxt
SecurityTxt

Scroll for all 7

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy

Company 6

The organization behind the API

Website
Website
 About
About
 News
News
 Blog
Blog
 BlogRSS
BlogRSS
 LinkedIn
LinkedIn

Other 5

Properties that don't map to a standard resource type

Publications
Publications
 Cookies
Cookies
 Accessibility
Accessibility
 Consultations
Consultations
 Guidance
Guidance

Source (apis.yml)

apis.yml Raw ↑ 
aid: ofgem
url: https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/apis.yml
name: Ofgem
kind: company
description: 'Ofgem, the Office of Gas and Electricity Markets, is the non-ministerial government department that regulates
  the gas and electricity markets of Great Britain (England, Scotland and Wales), drawing its powers from the Gas Act 1986,
  the Electricity Act 1989 and the Energy Act 2023. It licenses the companies that make, transport and sell energy, sets the
  price cap, runs the RIIO network price controls, administers environmental and social schemes such as the Renewables Obligation,
  REGO and Feed-in Tariffs on behalf of government, grants and supervises the Smart Meter Communication Licence held by the
  Smart DCC, and imposes the Data Best Practice licence obligation that requires network licensees to treat Energy System
  Data as presumed open. It sits above the value chain rather than in it - it holds no customers, no meters and no wires.
  Its own API posture is the plain finding: Ofgem publishes NO API of any kind. There is no developer portal, no api., docs.,
  data. or developer. subdomain, no OpenAPI, no CKAN endpoint. Market data is genuinely open but delivered as chart images,
  CSV and XLSX file downloads from the Ofgem Data Portal; consumer data does not exist here at all, because Great Britain
  mandated the smart-meter INFRASTRUCTURE rather than a consumer data right, and no CDR-equivalent obligation binds either
  Ofgem or the suppliers it licenses. Ofgem''s two operational registers - the Electronic Public Register and the Renewable
  Electricity Register - are login-gated applications whose backends are undocumented and unpublished. Ofgem is therefore
  a regulator that demands open, discoverable, interoperable data from the industry it supervises while shipping none of it
  programmatically itself.'
image: https://www.ofgem.gov.uk/sites/default/files/styles/uncropped_large/public/2021-06/ofgem-logo.jpg
tags:
- Energy
- United Kingdom
- Utilities
- Electricity
- Gas
- Energy Markets
- Regulator
- Smart Metering
- Open Data
- Energy Regulation
- Renewables
- Great Britain
created: '2026-07-27'
modified: '2026-07-27'
specificationVersion: '0.23'
apis: []
common:
- type: VulnerabilityDisclosure
  url: security/ofgem-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/ofgem-domain-security.yml
- type: Security
  url: https://www.ofgem.gov.uk/report-vulnerability
- type: WellKnown
  url: well-known/ofgem-well-known.yml
- type: Authentication
  url: authentication/ofgem-authentication.yml
- type: OAuthScopes
  url: scopes/ofgem-scopes.yml
- type: Conformance
  url: conformance/ofgem-conformance.yml
- type: Lifecycle
  url: lifecycle/ofgem-lifecycle.yml
- type: LLMsTxt
  url: llms/ofgem-llms.txt
- type: Website
  url: https://www.ofgem.gov.uk/
- type: About
  url: https://www.ofgem.gov.uk/about-us
- type: Portal
  url: https://www.ofgem.gov.uk/news-and-insight/data/data-portal
- type: Documentation
  url: https://www.ofgem.gov.uk/news-and-insight/data
- type: Documentation
  url: https://www.ofgem.gov.uk/data/ofgem-data-upcoming-release-calendar
- type: Documentation
  url: https://www.ofgem.gov.uk/energy-regulation/technology-and-innovation/digitalisation
- type: Documentation
  url: https://www.ofgem.gov.uk/sites/default/files/2021-11/Data_Best_Practice_Guidance_v1.pdf
- type: Registry
  url: https://epr.ofgem.gov.uk/
- type: Registry
  url: https://rer.ofgem.gov.uk/
- type: VulnerabilityDisclosure
  url: https://www.ofgem.gov.uk/report-vulnerability
- type: SecurityTxt
  url: https://www.ofgem.gov.uk/.well-known/security.txt
- type: News
  url: https://www.ofgem.gov.uk/news-and-insight
- type: Blog
  url: https://www.ofgem.gov.uk/blog
- type: BlogRSS
  url: https://www.ofgem.gov.uk/rss.xml
- type: Publications
  url: https://www.ofgem.gov.uk/publications
- type: LinkedIn
  url: https://www.linkedin.com/company/ofgem
- type: Support
  url: https://www.ofgem.gov.uk/about-us/get-in-touch/contact-us
- type: PrivacyPolicy
  url: https://www.ofgem.gov.uk/ofgem-privacy-policy
- type: Cookies
  url: https://www.ofgem.gov.uk/cookies
- type: Accessibility
  url: https://www.ofgem.gov.uk/website-accessibility
- type: Consultations
  url: https://www.ofgem.gov.uk/consultations
- type: Guidance
  url: https://www.ofgem.gov.uk/guidance/we-are-launching-our-new-data-exchange-service
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com