Location: Concord, Massachusetts

Watts: 4,680

Monthly Production: 437 kWh

Date: August 2017

This 13-panel solar energy system covers 95% of the owner’s household electricity budget. Proof that big things do come in small packages.

The roof on this home, by the way, is “TPO” or thermoplastic polyolefin, which is a single-ply reflective roofing membrane.