National Energy System Operator (NESO)

Carbon Intensity API

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.

GitHub

Documentation

📖
APIReference
https://carbon-intensity.github.io/api-definitions/
📖
Documentation
https://carbonintensity.org.uk/
📖
Authentication
https://raw.githubusercontent.com/api-evangelist/neso/refs/heads/main/authentication/neso-authentication.yml

Other Resources

🔗
GitHubOrganization
https://github.com/carbon-intensity
🔗
SourceCode
https://github.com/carbon-intensity/api-definitions
🔗
TermsOfService
https://github.com/carbon-intensity/terms
🔗
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

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API entry from apis.yml

apis.yml Raw ↑ 
aid: neso:neso-carbon-intensity-api
name: Carbon Intensity API
description: 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.
humanURL: https://carbon-intensity.github.io/api-definitions/
baseURL: https://api.carbonintensity.org.uk
tags:
- Carbon
- Electricity
- Renewables
- Grid
- Open Data
properties:
- type: APIReference
  url: https://carbon-intensity.github.io/api-definitions/
- type: Documentation
  url: https://carbonintensity.org.uk/
- type: GitHubOrganization
  url: https://github.com/carbon-intensity
- type: SourceCode
  url: https://github.com/carbon-intensity/api-definitions
- type: TermsOfService
  url: https://github.com/carbon-intensity/terms
- type: Authentication
  url: authentication/neso-authentication.yml
- type: Conventions
  url: conventions/neso-conventions.yml
- type: ErrorCatalog
  url: errors/neso-error-codes.yml
- type: DataModel
  url: data-model/neso-data-model.yml