About
Sun Hours for Solar Panels
Enter your postcode, tell Sol your best-ever solar day, and get a personalised 7-day generation forecast — no engineer, no logins, no complicated setup.
How it works
- Drop your pin — enter a postcode or drop a pin anywhere on the map. Works worldwide.
- Your best solar day — tell Sol the most kWh your panels have ever made. That single number tells Sol everything about your system.
- 7-day forecast — a personalised daily generation forecast with hourly breakdowns, updated with live weather data.
Powered by live forecasts and historical irradiance from Open-Meteo and NASA POWER. Optimised for the UK but useful anywhere the sun shines. Free on iOS and Android.