The roof has a day job.
Every morning the sun clocks in — no contract, no invoice, no “dear valued customer.” It has been on shift for 4.6 billion years and never once raised its rates.
- Array
- 6.4 kW peak
- Yield
- ~24 kWh / clear day
- Meter
- spins backwards
- Sun’s invoice
- $0.00, forever
Start hereRoof area × sun-hours × 0.8. That one line of math is the whole religion. Run it tonight for your own roof.