Sun Hours for Solar Panels

Tried a solar PV forecast app that hit you with a full-screen ad every time you tapped — even just to check a different day? Or asked for your azimuth, tilt angle, and inverter model before showing you anything useful? You're not alone. There's a better way.

Sun Hours is a solar PV forecast and daily alerts app built for normal people. Two questions. Eight seconds. Done.

How setup works:
1️⃣ Enter your postcode
2️⃣ Enter your best-ever solar day in kWh — the biggest single-day output your panels have ever produced. That one number tells us everything we need about your real-world system.

No inverter settings. No azimuth. No account. No engineering degree required.

What's waiting for you:

• A daily personal message from Sol ☀️ — Sun Hours' friendly mascot who tells you exactly what today looks like for your panels before you've touched a single setting
• Today's expected kWh at a glance — before the kettle's boiled ☕
• Hour-by-hour generation curve so you know precisely when your panels peak 📈
• 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 car, run the dishwasher, fire up the hot tub — on your own free electricity, not the grid's
• 7-day solar PV forecast with cloud cover and efficiency breakdown for each day
• 30-day view based on historical weather at your exact location — understand your site's seasonal rhythm, not just this week

On ads — because it matters: Sun Hours has ads. We're a small indie app and that's how we keep the lights on. But our ads are infrequent and non-intrusive. No full-screen takeovers between every tap. We'd rather you actually use the app.

Want zero ads, ever? Email support@sunhours.app and mention "solar forecast" — we'll send you a no-ads-for-life promo code 🎁

What you don't get: No account. No subscription required. No tracking. Your location never leaves your device 🔒

Built by someone who just wanted an honest solar PV forecast without the faff — and got fed up finding the alternative.