"In 2008, Larson added a 5-kilowatt (kW) photovoltaic (PV) system to the house. That didn't take them all the way to net zero, though, because he also has a huge garage and air-conditioned shop. So he added a second 5-kW system in 2010, and that got them to where they are today, paying an electricity bill that's just $9.88 per month in service charges, with rarely any charge for actual net electricity consumption."

What do you think of the approach that was taken to improve the energy efficiencies of the Larson home?