Sun Hours for Solar Panels
Andy Mesa Weather iPhoneiPadiPod touchApple Watch
Sun Hours for Solar Panels is a free Weather app for iPhone and iPad by Andy Mesa. Rated 4.0/5 from 3 ratings. Requires iOS 15.0. Updated September 26, 2026.
- Rating
- 4.0
- 3 ratings
- Price
- Free
- on the App Store
- Size
- 54 MB
- Age 4+
- Updated
- Sep 26
- 2026 · v2.0.3
Screenshots
About Sun Hours for Solar Panels
Will your panels generate anything today? Sun Hours tells you in 8 seconds — just your ZIP/postal code or map pin and your best-ever solar day. No inverter login. No azimuth. No account. No engineering degree. THE FORECAST Today's expected kWh before your coffee is ready. An hour-by-hour generation curve shows exactly when your panels peak. Get a 7-day solar forecast with cloud cover and efficiency for each day, plus 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 sends a notification: "It's a 100% day." The solar equivalent of a perfect score. SUN HOURS ALERTS Optional morning notifications tell you the day's best two-hour solar window. "Best window today: 11 AM–1 PM." Charge the EV, run the dishwasher, or power another appliance with your own free electricity instead of the grid. SMART APPLIANCE TIMER Tell Sun Hours which appliances you use. It tells you exactly when to run each one during your solar peak. Washer, dishwasher, dryer, EV top-up — scheduled around your free generation, not your habits. TRAVEL MODE Portable panels on an RV? Camping with a folding kit? Drop a pin anywhere or use GPS to get a solar forecast for that exact location. One tap takes you 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, Sun Hours can forecast it. ON IPAD AND MAC The dashboard opens out into two columns on iPad, so today and the week ahead sit side by side rather than stacked, with the animated sky running edge to edge behind a frosted glass toolbar. The forecast accuracy grid uses the extra width and labels each month. It runs on an M-series Mac too. Free to use. Infrequent, closable ads. No account. No tracking. Your location never leaves your device. Built in the UK for solar owners everywhere — by someone who got tired of apps making a simple question complicated. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sunhours.app/privacy
What’s new
Version 2.0.3 · Updated September 26, 2026
Sun Hours 2.0 • More accurate forecasts. Every release, we work to make your solar forecast and generation numbers more accurate, and this one takes a real step forward in how forecasts are checked against what your panels actually produce. • Fixed a blank grey screen that some people saw after moving to a new iPhone, particularly with the phone set to Cantonese or certain other languages. Sorry, and thank you for telling us. • Your currency now follows your region, so savings show in pounds, euros or dollars as you'd expect, whatever language your phone uses. • Smoother and more reliable: fixes for rare crashes when the app opens, and the 30-day outlook now stays complete when the clocks change. • If something ever does go wrong, you'll now see a clear message instead of a blank space. • Loving Sun Hours? Pick the sun in Settings → Feedback to leave a review. Anything less than sunny? Tell us what to improve and it comes straight to the developer.
App privacy
The developer, Andy Mesa, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Location: Coarse Location, Precise Location
- Identifiers: Device ID
- Usage Data: Product Interaction, Advertising Data
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Performance Data, Other Diagnostic Data, Crash Data
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, App Functionality
Alternatives to Sun Hours for Solar Panels
Looking for apps like Sun Hours for Solar Panels? Here are 6 similar apps on the App Store. The highest rated is Solcast (5.0/5), and all 6 are free to download.
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Solcast
5.0
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Solar Energy Forecast
4.7
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Volcast - Solar Forecast
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Solar Spotter
5.0
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Kilowatt Solar Energy Forecast
4.1
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LumaPlace: Weather & Places
| App | Rating | Price | Last updated |
|---|---|---|---|
| Sun Hours for Solar Panels | 4.0 / 5 (3 ratings) | Free | September 26, 2026 |
| Solcast | 5.0 / 5 (2) | Free | Sep 1, 2026 |
| Solar Energy Forecast | 4.7 / 5 (15) | Free | Aug 26, 2026 |
| Volcast - Solar Forecast | – | Free | Sep 10, 2026 |
| Solar Spotter | 5.0 / 5 (1) | Free | Sep 21, 2026 |
| Kilowatt Solar Energy Forecast | 4.1 / 5 (10) | Free | Sep 25, 2026 |
| LumaPlace: Weather & Places | – | Free | Sep 17, 2026 |