For commercial installations, demand and supply often match very well. They're not trying to get off grid but reduce bills. Whereas many homes with working pare

For commercial installations, demand and supply often match very well. They're not trying to get off grid but reduce bills. Whereas many homes with working parents and school age children are using power after sunset, for offices and shopping centres, they're running something like air-conditioning while the sun's up. Where I live, home solar pays for itself in 4-5 years; for our office building, it was 3-4 years.