DC Hub
Environment
Live data on data-center facilities, power markets, grid telemetry, and fiber infrastructure
No keyCORSHTTPS
National Grid ESO
Open data from Great Britain’s Electricity System Operator
Checked 4 days ago: not responding
API key
Not required
HTTPS
Supported
Browser calls
Unconfirmed
Status
Failing · 0/100
What our checks found
- Health score
- 0/100
- Reliability
- 0%
- Average latency
- 0ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for National Grid ESO. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://data.nationalgrideso.com/ENDPOINT" \
-H "Accept: application/json"Where this listing comes from
Aggregated from one public source (public-apis), then normalised and checked by us. If something here is wrong, tell us and we will correct it.
Other Environment APIs
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Global weather forecast API for non-commercial use
No keyCORSHTTPS
Open-Meteo Marine
Environment
Ocean wave height, swell, sea temperature and marine weather data
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UK Carbon Intensity
Environment
The Official Carbon Intensity API for Great Britain developed by National Grid
No keyCORSHTTPS
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Environment
US electricity rates by state, with appliance and EV charging running costs
No keyCORSHTTPS
National Grid ESO — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is National Grid ESO free to use?
National Grid ESO is listed in our free catalogue and required no credential when we called it. It needs no authentication at all, so you can send a request without signing up. Free tiers can still carry rate limits or non-commercial terms, so check the provider's own terms before shipping.
Does National Grid ESO need an API key?
No. We called National Grid ESO on 2026-09-18 with no key, no token and no Authorization header, and it responded. That is what puts it in our no-key collection.
Can I call National Grid ESO from browser JavaScript?
We could not confirm CORS support for National Grid ESO. Test it from a browser before relying on it client-side; if the request succeeds in curl but fails in the console, CORS is the reason.
Is National Grid ESO still working?
Not at our last check on 2026-09-18. National Grid ESO did not respond successfully, which is why it is marked as down here. This may be temporary; we re-check on a schedule and the badge above reflects the most recent run.
Is National Grid ESO available over HTTPS?
Yes. National Grid ESO serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.