Energy to Gallons Gas Equivalent (GGE) Calculator
Good one. Seed Eco-Home currently has 6.2kW and 8.2 MWhr/year production capacity.
This is 243 gallons of gasoline equivalent energy. Since electricity production must be compared to coal and gas. For gas comparison, take about 1/3 as the efficiency of fossil fuel-based electric power generation. Thus, the number turns to about 750 gallons of 'gas' equivalent if that 'gas' was 33% efficient.