Location: Lexington, Massachusetts

Watts: 5,886

Monthly Production: 530 kWh

Date: April 2014

This system, which looks like it’s halfway to the sun already in this photo, has 18 SunPower 327-watt panels. SunPower makes some of the most efficient panels available today.

Four years after having his system installed, the owner had this to say on independent website SolarReviews:

“Very happy with their professional and clean installation and still happy with the outcome and my decision after 4 years!”