Yes, Ella and Randy just celebrated living a full year at TrekHaus West! Living net zero is no longer a fantasy. We generated more energy than we used in 2012! Here are the numbers...
TrekHaus West Energy Use/Generation Summary
(12/26/11 to 12/26/12)
Total Energy Use 1st Year: 3322 kWh
Average Energy Use Per Day: 9.1 kWh/day
Total Energy Generation 1st Year: 3748 kWh
(PV turned on 5/8/12, so just 7.5 months of solar power)
Expected annual energy generation: about 4600 kWh from 4.70 kW system
Estimated annual energy production/excess: 1260 kWh
(enough to power EV about 3800 miles)
Additional solar capacity exists if needed in future.
(room to add 5 more rooftop PV panels)
Number of occupants: 2
Thermostat: 68° F day, 66° F overnight