Winter Solar Shortfall Calculator
Will your solar keep up in winter?
Use winter peak sun hours for your area. Everything is worked out in your browser. Nothing is saved or sent anywhere.
1. Your use
2. Your array
Heat, dust, wiring and battery losses.
3. Panels
4. Results
How it was worked out
What this does and doesn't tell you
- Cloudy weeks go well below the average. Off-grid systems need a battery reserve or a generator for those.
- Safety: in Australia, any work on 240V AC wiring, including connecting an inverter, battery or solar system to a home's switchboard or fixed wiring, must be done by a licensed electrician.