# 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. It licenses energy companies, sets the price cap, runs the RIIO network price controls, administers environmental and social schemes, supervises the Smart Meter Communication Licence held by Smart DCC, and imposes the Data Best Practice licence obligation that requires network licensees to treat Energy System Data as presumed open. **Ofgem publishes no API.** This file is generated by API Evangelist from the catalog record at https://github.com/api-evangelist/ofgem, not by Ofgem. There is no developer portal, no OpenAPI, AsyncAPI or GraphQL schema, no CKAN endpoint, no SDK, no MCP server and no Postman collection. Every developer-facing host (api., developer., docs., data., portal., open., opendata., dsi., dataexchange.ofgem.gov.uk) fails to resolve, and every developer-facing path on the main site returns 404, including /openapi.json, /swagger.json, /jsonapi, /graphql and /llms.txt (probed 2026-07-27). Ofgem's market data is genuinely open and anonymous, but it is delivered as files - interactive charts with PNG and CSV downloads, plus XLSX workbooks. Consumer energy data does not exist at Ofgem at all: Great Britain mandated the smart-meter infrastructure rather than a consumer data right, so there is no CDR-equivalent, no Green Button, no accredited-recipient scheme and no consent API. The regulator that requires the industry to publish discoverable, interoperable, presumed-open data ships none of it programmatically itself. ## Data - [Ofgem Data Portal](https://www.ofgem.gov.uk/news-and-insight/data/data-portal): Interactive charts across retail, wholesale, network and customer-service indicators. Every chart offers PNG and CSV download. No login, no key, no API. - [All available charts](https://www.ofgem.gov.uk/news-and-insight/data/data-portal/all-available-charts): The full chart index. - [Data landing page](https://www.ofgem.gov.uk/news-and-insight/data): Entry point for Ofgem data. - [Upcoming data release calendar](https://www.ofgem.gov.uk/data/ofgem-data-upcoming-release-calendar): Forthcoming publication dates. Human-readable page, no feed. - [Energy price cap](https://www.ofgem.gov.uk/energy-regulation/domestic-and-non-domestic/energy-pricing-rules/energy-price-cap): Cap levels and the levelised cap rates model, published as XLSX. - [FIT public reports and data](https://www.ofgem.gov.uk/feed-tariffs-fit/contacts-guidance-and-resources/public-reports-and-data-fit): Feed-in Tariff installation reports as Excel. - [REGO public reports and data](https://www.ofgem.gov.uk/public-reports-and-data-rego): Fuel mix disclosure and recognised guarantee-of-origin reports. ## Registers - [Electronic Public Register](https://epr.ofgem.gov.uk/): Statutory register of gas and electricity licences and licence-related documents. Single-page application; backend undocumented. - [Renewable Electricity Register](https://rer.ofgem.gov.uk/): RO, REGO and ROO-FIT accreditation. Entirely account-gated - even the pages described as public reports redirect to sign-in. ## Data policy - [Digitalisation](https://www.ofgem.gov.uk/energy-regulation/technology-and-innovation/digitalisation): Data Best Practice, Data Sharing Infrastructure and Data Domain Coordinator work. - [Data Best Practice Guidance v1.0 (PDF)](https://www.ofgem.gov.uk/sites/default/files/2021-11/Data_Best_Practice_Guidance_v1.pdf): Twelve principles applied to licensees through RIIO licence conditions; Energy System Data is presumed open. - [Securing open data in energy - triage consultation](https://www.ofgem.gov.uk/consultation/securing-open-data-energy-triage-data-best-practice-guidance): Open consultation on strengthening the open-data triage step. - [Data Exchange Service (Beta)](https://www.ofgem.gov.uk/guidance/we-are-launching-our-new-data-exchange-service): Inbound industry submissions. Mentions automating uploads "including via API"; invitation only, no endpoint published. ## API Evangelist artifacts - [apis.yml](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/apis.yml): The APIs.json record for Ofgem. - [review.yml](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/review.yml): Full probe record and mandate posture. - [Authentication profile](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/authentication/ofgem-authentication.yml): Identity layer in front of the two registers (AWS Cognito, Azure AD B2C). - [OAuth scopes](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/scopes/ofgem-scopes.yml): Scopes the register applications request. Not grantable to third parties. - [Well-known index](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/well-known/ofgem-well-known.yml): Every /.well-known/ path probed, with status. - [Conformance](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/conformance/ofgem-conformance.yml): Standards assessment, including the energy data standards Ofgem does not use. - [Lifecycle](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/lifecycle/ofgem-lifecycle.yml): Data release cadence; no API versioning, deprecation policy or status page exists. - [Domain security](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/security/ofgem-domain-security.yml): TLS, HSTS, DNSSEC, CAA, SPF and DMARC probe results. - [Vulnerability disclosure](https://raw.githubusercontent.com/api-evangelist/ofgem/refs/heads/main/security/ofgem-vulnerability-disclosure.yml): security.txt, HackerOne submission route and disclosure policy. ## Corporate - [Website](https://www.ofgem.gov.uk/) - [About us](https://www.ofgem.gov.uk/about-us) - [News and insight](https://www.ofgem.gov.uk/news-and-insight) - [Blog](https://www.ofgem.gov.uk/blog) - [RSS](https://www.ofgem.gov.uk/rss.xml) - [Publications](https://www.ofgem.gov.uk/publications) - [Contact us](https://www.ofgem.gov.uk/about-us/get-in-touch/contact-us) - [Report a vulnerability](https://www.ofgem.gov.uk/report-vulnerability) - [Privacy policy](https://www.ofgem.gov.uk/ofgem-privacy-policy)