OnSun: Solar PV Forecaster & Planner

OnSun: Solar PV Forecaster & Planner

Sunlight is free. Wasting it isn't.

sper5989
@sper5989
Published on Apr 9, 2026
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Target Audience
Non-Technical Users
Platforms
WebMobile

About OnSun: Solar PV Forecaster & Planner

You spent thousands on solar panels. Your bill is lower. But probably not as low as it should be. Your system generates at its peak during the day. But it is common that your biggest loads, dishwasher, washing machine, EV, pool pump, hot water, mostly run outside that window. So instead of using the electricity your roof is producing, you export it at 4 cents a kilowatt hour and buy it back in the evening at 30. This adds up! Quietly. Every day. Nobody told you when to actually run your appliances. Your installer didn't. Your inverter app doesn't. Your retailer certainly won't. OnSun does. Enter your location, your panel size and orientation, and OnSun builds an hour-by-hour forecast of exactly when your system will generate, today and the next seven days. Not a generic estimate. Your system, your roof, your location. Then it shows you the best window to run each appliance around that forecast. Dishwasher, washing machine, dryer, EV charger, pool pump, hot water system. The app creates a daily appliance schedule built around your solar generation profile, helping you plan around the sunniest days. No extra hardware. No electrician. Works with any solar system, anywhere in the world. Set up in under two minutes. You're already saving. OnSun shows you how much more you could be.

Product Insights

OnSun is a digital forecaster that converts solar panel specifications and location data into hour-by-hour generation schedules for household appliances. It creates seven-day plans to synchronize high-draw devices with peak production window to minimize grid reliance.

  • No hardware or electrician required for installation.
  • Provides specific hour-by-hour production forecasts for seven days.
  • Hardware agnostic software that works with any solar system globally.
  • Quick setup process completed in under two minutes.

Ideal for: Non-Technical Users who want to optimize their solar investment by matching appliance use with their roof's specific generation profile.

Screenshots

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Comments (1)

sper5989
@sper5989

Households spend thousands on solar, but no one tells them when to actually use it. This app help homes use more of the energy their roof already generates.