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Danish data service Energi vs GrünstromIndex

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

APIDanish data service EnergiHEALTHY87GrünstromIndexHEALTHY53
Uptime · 30d
Uptime · 90d100%73.5%
Uptime · 30d100%73.3%
P50 · ms8881072
P95 · ms27894119
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no API keyFree under fair-use policy
Rate limitUnpublishedFair-use (paid tiers for higher limits)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Danish data service Energi vs GrünstromIndex: common questions

Which is more reliable, Danish data service Energi or GrünstromIndex?

On our scheduled checks, Danish data service Energi leads on measured uptime — Danish data service Energi at 100% versus GrünstromIndex at 73.5% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Danish data service Energi or GrünstromIndex?

Danish data service Energi has the lower median latency in our checks — Danish data service Energi responds in 888 ms versus GrünstromIndex at 1072 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Danish data service Energi and GrünstromIndex need an API key?

Neither needs a paid key — Danish data service Energi is callable with no signup, and GrünstromIndex is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Danish data service Energi and GrünstromIndex from the browser?

Only GrünstromIndex is browser-friendly — it returns CORS headers over HTTPS. Danish data service Energi needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Danish data service Energi and GrünstromIndex free for commercial use?

Danish data service Energi has unclear commercial terms, and GrünstromIndex has unclear commercial terms. 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.