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Aare.guru API vs Danish data service Energi

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

APIAare.guru APINEW—Danish data service EnergiNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — no API key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Aare.guru API vs Danish data service Energi: common questions

Which is more reliable, Aare.guru API or Danish data service Energi?

On our scheduled checks, Danish data service Energi leads on measured uptime — Aare.guru API at —% versus Danish data service Energi 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 Aare.guru API and Danish data service Energi need an API key?

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

Can I call Aare.guru API and Danish data service Energi from the browser?

Only Aare.guru API 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 Aare.guru API and Danish data service Energi free for commercial use?

Aare.guru API has unclear commercial terms, and Danish data service Energi 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.