# Carbon Intensity API

**Canonical:** https://apis.io/apis/neso/neso-carbon-intensity-api/  
**Provider:** National Energy System Operator (NESO) — https://apis.io/providers/neso/  
**Base URL:** https://api.carbonintensity.org.uk  
**Documentation:** https://carbon-intensity.github.io/api-definitions/

Carbon Intensity API is one of 2 APIs that [National Energy System Operator (NESO)](https://apis.io/providers/neso/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Carbon, Electricity, Renewables, Grid, and Open Data. The published artifact set on APIs.io includes an API reference, API documentation, and authentication docs.

The official Carbon Intensity API for Great Britain, developed by NESO, giving national and regional carbon intensity of GB electricity - actual, forecast up to 96+ hours ahead, half-hourly generation mix, per-fuel emission factors, and regional breakdowns by DNO region, region id, or postcode. Fully anonymous REST/JSON over HTTPS with no API key and no registration; documented as a Slate reference site rather than as a downloadable OpenAPI contract.

## Machine-readable artifacts (9)

- **APIReference** — https://carbon-intensity.github.io/api-definitions/
- **Documentation** — https://carbonintensity.org.uk/
- **GitHubOrganization** — https://github.com/carbon-intensity
- **SourceCode** — https://github.com/carbon-intensity/api-definitions
- **TermsOfService** — https://github.com/carbon-intensity/terms
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/neso/refs/heads/main/authentication/neso-authentication.yml
- **Conventions** — https://raw.githubusercontent.com/api-evangelist/neso/refs/heads/main/conventions/neso-conventions.yml
- **ErrorCatalog** — https://raw.githubusercontent.com/api-evangelist/neso/refs/heads/main/errors/neso-error-codes.yml
- **DataModel** — https://raw.githubusercontent.com/api-evangelist/neso/refs/heads/main/data-model/neso-data-model.yml

## Other National Energy System Operator (NESO) APIs (1)

- [NESO Data Portal API](https://apis.io/apis/neso/neso-data-portal-api/)

## Tags

Carbon, Electricity, Renewables, Grid, Open Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/neso/neso-carbon-intensity-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/neso/.