6kW PV System
- $12k cost after federal rebate 
- But, on average - only 3-5 hours of rated power (6kW) per day. This is likely due to system inefficiencies: poor solar angle, electronics efficiencies,
- Around 10000 kWhr per year for desert of USA. Seattle is the worst, with 35% less annual power. But typical may be 20-25% less than desert.