National Grid ESO

API

Open electricity system data from Great Britain’s ESO

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Overview

Provides open access to real-time and historical data from Great Britain’s Electricity System Operator, including energy generation (renewables, fossil fuels), demand, grid frequency, and stability metrics. Endpoints support RESTful queries, returning JSON responses (with CSV options for bulk data). Use cases include energy market analysis, academic research on sustainability, building tools to track renewable penetration, and informing policy decisions on grid modernization.

Example Integration (JavaScript)

script.js JS

fetch('https://data.nationalgrideso.com/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

  • RESTful API
  • JSON/CSV Responses
  • No Auth Required
  • Real-Time & Historical Data
  • Renewable Energy Metrics

Frequently Asked Questions

? Is National Grid ESO API free to use?

Yes, it provides open access to all its electricity system data at no cost.

? Does it require an API Key?

No, authentication is not required for accessing public data endpoints.

? What is the response format?

Most endpoints return JSON; bulk datasets are available in CSV format for download.

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Tool Info

Pricing Free
Category Environment
Platform Public API

Pros

  • Open access to GB grid data
  • Comprehensive energy metrics
  • Bulk data download options

Cons

  • Rate-limited requests
  • Geographically restricted to Great Britain
  • No official SDK support

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