DC Hub
Environment
Live data on data-center facilities, power markets, grid telemetry, and fiber infrastructure
No keyCORSHTTPS
WattFigure
US electricity rates by state, with appliance and EV charging running costs
Verified 4 days ago: 100% uptime
API key
Not required
HTTPS
Supported
Browser calls
Yes, CORS enabled
Status
Live · 100/100
What our checks found
- Health score
- 100/100
- Reliability
- 100%
- Average latency
- 1668ms
Last checked 2026-09-18. Measured independently, not self-reported by the provider.
How to call it
A starting template for WattFigure. Replace ENDPOINT with the path from the official documentation, which we link above rather than guess at.
# No authentication required.
curl -s "https://api.wattfigure.com/ENDPOINT" \
-H "Accept: application/json"Where this listing comes from
Aggregated from 2 public sources (public-api-lists, 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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Environment
Predicted and actual air quality components for The Netherlands (RIVM)
No keyCORSHTTPS
Open-Meteo
Environment
Global weather forecast API for non-commercial use
No keyCORSHTTPS
Open-Meteo Marine
Environment
Ocean wave height, swell, sea temperature and marine weather data
No keyCORSHTTPS
UK Carbon Intensity
Environment
The Official Carbon Intensity API for Great Britain developed by National Grid
No keyCORSHTTPS
GrünstromIndex
Environment
Green Power Index for Germany (Grünstromindex/GSI)
No keyCORS
WattFigure — common questions
Answered from what our own scheduled checks found, not from the provider's marketing.
Is WattFigure free to use?
WattFigure 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 WattFigure need an API key?
No. We called WattFigure 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 WattFigure from browser JavaScript?
Yes. WattFigure returned CORS headers when we checked it, so a browser will let your page read the response. You can fetch it directly from client-side JavaScript with no proxy and no backend.
Is WattFigure still working?
Yes, as of 2026-09-18. Our automated check reached WattFigure and recorded a 100% reliability score with a median response time of 1668 ms. We re-check on a schedule, and this page updates with the result.
Is WattFigure available over HTTPS?
Yes. WattFigure serves over HTTPS, so you can call it from a secure page without triggering a mixed-content block.