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Solematica vs UK Carbon Intensity

Same instrument, two spec sheets — measured, not claimed.

APISolematicaNEW—UK Carbon IntensityNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0 (per API docs)
Free tierFree public /providers endpoint; other endpoints need paid creditsFree — no API key
Rate limit100 req/window · 99 remaining · resets 900Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Solematica vs UK Carbon Intensity: common questions

Which is more reliable, Solematica or UK Carbon Intensity?

On our scheduled checks, UK Carbon Intensity leads on measured uptime — Solematica at —% versus UK Carbon Intensity at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Solematica and UK Carbon Intensity need an API key?

Neither needs a paid key — Solematica is callable with no signup, and UK Carbon Intensity is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Solematica and UK Carbon Intensity from the browser?

Only UK Carbon Intensity is browser-friendly — it returns CORS headers over HTTPS. Solematica needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Solematica and UK Carbon Intensity free for commercial use?

Solematica has unclear commercial terms, and UK Carbon Intensity allows commercial use on its free tier. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.