Is PVWatts API down?
Current status, daily uptime history and troubleshooting for the PVWatts API (Environment).
Possibly: PVWatts's last check failed
Our latest daily check of PVWatts (Oct 24, 2026, 12:25 UTC) failed: its domain name doesn't resolve. One failure can be a blip; the live check below tells you whether it's still failing.
Checking PVWatts now…
Sending a request from our server.
PVWatts API uptime history
- Uptime
- 2 checks so far
- Last check
- Oct 24, 2026, 12:25 UTC
- Response
- Its domain name doesn't resolve
- Last up
- Not seen up yet
We check PVWatts's listed URL (https://developer.nrel.gov/docs/solar/pvwatts/v6/) once a day. History started when PVWatts was first checked, so new entries show fewer than 30 days.
PVWatts API not working for you?
- PVWatts needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string.
- A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header.
- If calls fail only in the browser with a CORS error, PVWatts may not allow cross-origin requests. Call it from your server instead.
- If it works from one network but not another, check firewalls, VPNs and regional blocks.
- Check the provider's documentation, status page or social accounts for planned maintenance or a changed endpoint.
Environment APIs up at their last check
- 1
kanari API
Online · 527 msReal-time worldwide wildfire detections, water bomber tracking and open fire archive.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 2
Open-Meteo API
Online · 609 msFree weather API for non-commercial use.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 3
Sähkön hinta nyt API
Online · 1106 msFinnish and Nordic day-ahead electricity spot prices (15-minute), cheapest hours.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 4
WattFigure API
Online · 712 msUS electricity rates by state, with appliance and EV charging running costs.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS - 5
GridVigil API
Online · 1588 msPressure scores, demand, generation mix and alerts for the 10 major U.S. power grids.
- No API key needed
- Callable from the browser (CORS)
- HTTPS
No authHTTPSCORS
PVWatts API status FAQ
Is PVWatts API down right now?
Our latest daily check of PVWatts (Oct 24, 2026, 12:25 UTC) failed: its domain name doesn't resolve. One failure can be a blip; the live check below tells you whether it's still failing. This page also runs a live check from our server when you open it, so you can see whether PVWatts is responding at this moment.
How do you check whether PVWatts API is up?
Once a day our checker requests PVWatts's listed URL (https://developer.nrel.gov/docs/solar/pvwatts/v6/) and records whether it answers within 15 seconds. Answers like 401 (needs a key), 403 (blocks bots) or 429 (rate-limited) count as up, because the server responded. The listed URL is often the documentation page, so an API endpoint can occasionally fail while its docs stay up.
What can I use if PVWatts API is down?
Free Environment APIs that were up at their last check include kanari, Open-Meteo, Sähkön hinta nyt. See the full list of PVWatts alternatives for a comparison.
Why does PVWatts API work for others but not for me?
PVWatts needs an API key. A 401 or 403 usually means a missing, expired or mis-sent credential: check whether it belongs in a header or the query string. A 429 response means you're being rate-limited. Slow down, cache responses, and respect any Retry-After header. If calls fail only in the browser with a CORS error, PVWatts may not allow cross-origin requests. Call it from your server instead.