National Grid ESO
Great Britain's electricity system operator open data, CKAN-style
The operator formerly known as National Grid ESO (now NESO) publishes Britain's grid data through a standard CKAN API. List every dataset with a single keyless GET, then drill into wind forecasts, demand, carbon intensity and more. No key, no signup.
GET https://api.neso.energy/api/3/action/package_list
{
"help": "https://api.neso.energy/api/3/action/help_show?name=package_list",
"success": true,
"result": [
"14-days-ahead-operational-metered-wind-forecasts",
"14-days-ahead-wind-forecasts"
]
}curl "https://api.neso.energy/api/3/action/package_list"const res = await fetch("https://api.neso.energy/api/3/action/package_list");
const data = await res.json();
console.log(data);import requests
res = requests.get("https://api.neso.energy/api/3/action/package_list")
print(res.json())/action/package_listPROBEDGreat Britain's electricity system operator open data, CKAN-style
/actionAction — documented GET route.
/action/1Action details by ID (example: 1).
/action?limit=10Action — documented GET route.
/action/search?q=testSearch by query parameters.
We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.
Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.
National Grid ESO: common questions
Is National Grid ESO free to use?
Yes — National Grid ESO is a free weather API. Free tier: Free — limits not published. Whether the free tier allows commercial use is unclear — check the provider docs.
Does National Grid ESO need an API key?
No — National Grid ESO needs no API key or signup. You can call it straight away; rate limits still apply (Unpublished).
Can I call National Grid ESO from the browser?
Yes — National Grid ESO returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.
Is National Grid ESO up right now?
As of our last scheduled check, National Grid ESO is healthy with 100% uptime over 90 days and a 609 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.