Sun Hours for Solar Panels
UK Solar Forecast in 8 Seconds
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Will your panels earn anything today? Sun Hours tells you in 8 seconds — just your postcode and your best-ever solar day. No inverter login. No azimuth. No account. No engineering degree.
THE FORECAST
Today's expected kWh before the kettle's boiled. An hour-by-hour generation curve so you know exactly when your panels peak. A 7-day solar forecast with cloud cover and efficiency breakdown for each day. And a 30-day view built from historical weather at your exact location — so you understand your site's full seasonal rhythm, not just this week.
SOL
Every morning, Sol — Sun Hours' pixel-art sun mascot — delivers a personal forecast for your panels before you've touched a chart. When today's forecast matches your all-time best generation day, Sol fires a notification: "It's a 100% day." The solar equivalent of a perfect score. You'll want to share it.
SUN HOURS ALERTS
Opt-in morning notifications that tell you your best two-hour solar window for the day. "Best window today: 11am–1pm." Charge the EV, run the dishwasher, fire up the immersion heater — on your own free electricity, not the grid's. The question every solar owner asks every morning, answered automatically.
SMART APPLIANCE TIMER
Tell Sun Hours what appliances you have. It tells you exactly when to run each one to land inside your solar peak. Washing machine, dishwasher, tumble dryer, EV top-up — scheduled around your free generation, not your habits.
TRAVEL MODE
Portable panels on a campervan? Camping with a folding kit? Drop a pin anywhere or use GPS and get an accurate solar forecast for that exact location — the Lake District, the Scottish Highlands, a clifftop in Cornwall, anywhere. One tap back to your home setup.
WORKS WITH EVERYTHING
Hoymiles, Deye, Marstek, Envertech, APS, Solis, Growatt — and every other rooftop or plug-in setup. No inverter integration needed. If it generates kWh somewhere in the UK, Sun Hours can forecast it.
Free to use. Infrequent, closeable ads. No account. No tracking. Your location never leaves your device.
Built in the UK, for UK solar owners — by someone who got fed up with apps that made a simple question complicated.
Ratings & Reviews
- I've improved the weather model - the weather model improves with every release with my own data.
Optionally, you can now help - Join Solar Wars!
- Solar Insights - get the headlines from Sol for the coming week.
- Now available in German and Spanish, Hola!
The developer, Andy Mesa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Andy Mesa
- Size
- 51 MB
- Category
- Weather
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later. - Apple Watch
Requires watchOS 10.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Sun Hours Pro - Lifetime $7.99
- No Ads - Lifetime $0.99
- Copyright
- © Andy Enrique 2026