is designing buildings that engage the environment in a way that dramatically reduces or eliminates the need for fossil fuels.

Buildings use 48% of total annual energy production--40% for building operations and 8% for building construction. 

Building operations account for 43% of total annual greenhouse gas emissions.

75% of all electricity produced at power plants in the US goes to operate buildings.

Architecture 2030 issued the 2030 Challenge--reducing the fossil fuel energy consumption for all new and renovated buildings by 50%, progressing to carbon neutral by 2030.

Sounds like a perfect job for PV.