Location: Worcester, Massachusetts

Watts: 7,150

Monthly Production: 644 kWh

Date: May 2018

Imagine suddenly paying one-fifth the usual price for your groceries, or mortgage. Wouldn’t that be nice? That’s what solar is doing for this Worcester, MA homeowner.

Even factoring in the price of the system, she has locked in a super low electricity price for decades — 4 cents with solar versus 21 cents from National Grid. And National Grid’s price will increase for sure.