Energy-Charts API vs Sofiaplan
Same instrument, two spec sheets — measured, not claimed.
Energy-Charts API vs Sofiaplan: common questions
Which is more reliable, Energy-Charts API or Sofiaplan?
On our scheduled checks, Sofiaplan leads on measured uptime — Energy-Charts API at 99.02% versus Sofiaplan 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 Sofiaplan?
Energy-Charts API has the lower median latency in our checks — Energy-Charts API responds in 1178 ms versus Sofiaplan at 1666 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 Sofiaplan need an API key?
Neither needs a paid key — Energy-Charts API is callable with no signup, and Sofiaplan is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Energy-Charts API and Sofiaplan from the browser?
Only Energy-Charts API is browser-friendly — it returns CORS headers over HTTPS. Sofiaplan needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Energy-Charts API and Sofiaplan free for commercial use?
Energy-Charts API has unclear commercial terms, and Sofiaplan 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.