Energy-Charts API vs Lowy Asia Power Index

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

Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d98.3%100%
P50 · ms1178558
P95 · ms28552319
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (Lowy Institute research)
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Energy-Charts API vs Lowy Asia Power Index: common questions

Which is more reliable, Energy-Charts API or Lowy Asia Power Index?

On our scheduled checks, Lowy Asia Power Index leads on measured uptime — Energy-Charts API at 99.02% versus Lowy Asia Power Index at 100% 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, Energy-Charts API or Lowy Asia Power Index?

Lowy Asia Power Index has the lower median latency in our checks — Energy-Charts API responds in 1178 ms versus Lowy Asia Power Index at 558 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 Energy-Charts API and Lowy Asia Power Index need an API key?

Neither needs a paid key — Energy-Charts API is callable with no signup, and Lowy Asia Power Index is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Energy-Charts API and Lowy Asia Power Index from the browser?

Only Energy-Charts API is browser-friendly — it returns CORS headers over HTTPS. Lowy Asia Power Index needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Energy-Charts API and Lowy Asia Power Index free for commercial use?

Energy-Charts API has unclear commercial terms, and Lowy Asia Power Index 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.