gridcarbon has been shut down

The hourly grid carbon intensity API stopped serving data on 13 September 2026. Requests to api.gridcarbon.dev now return HTTP 410.

What remains:

• A fixed, citable snapshot of every value the API served, 1,460,467 rows to 2026-09-04, CC BY 4.0: doi:10.5281/zenodo.22299989
• The method, the full emission factor table and every known bias: methodology
• Notes: seven years, three grids, six traps in ENTSO-E data, where to get grid carbon intensity data

If you need live data, the comparison page lists the alternatives. For Great Britain, carbonintensity.org.uk is free and keyless.

Thank you to everyone who tried it.