Energy-Charts API vs Photon API
Same instrument, two spec sheets — measured, not claimed.
Energy-Charts API vs Photon API: common questions
Which is more reliable, Energy-Charts API or Photon API?
On our scheduled checks, Photon API leads on measured uptime — Energy-Charts API at 97.2% versus Photon API at 97.8% 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 Photon API?
Energy-Charts API has the lower median latency in our checks — Energy-Charts API responds in 716 ms versus Photon API at 768 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 Photon API need an API key?
Neither needs a paid key — Energy-Charts API is callable with no signup, and Photon API is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Energy-Charts API and Photon API from the browser?
Yes — both Energy-Charts API and Photon API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Energy-Charts API and Photon API free for commercial use?
Energy-Charts API has unclear commercial terms, and Photon API 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.