Solar Panels in Princeton, MA

Princeton, Massachusetts residents are served by Princeton Municipal Light Department, which charges $0.16 per kWh for residential electricity. This is 5% below the national average of $0.168/kWh. At this rate, a typical household using 900 kWh per month spends approximately $1,728 per year on electricity—money that could be going toward building equity in a solar system instead.

An 8 kW solar system in Princeton can offset most or all of a typical home’s electricity usage, saving approximately $1,536 per year. Over the 25-year lifespan of the system, that adds up to $56,001 in total savings. With Massachusetts state incentives of $320, the net system cost drops to $25,840, resulting in a payback period of just 16.8 years.

As a municipal utility, Princeton Municipal Light Department sets its own rates and rebate programs independently, separate from Mass Save and ConnectedSolutions. Net metering is available, meaning excess solar energy you produce earns bill credits from Princeton Municipal Light Department. Heat pump rebates of up to $1,500 are also available for Princeton homeowners.

The federal residential solar tax credit (Section 25D) expired at the end of 2025, making state and utility incentives more important than ever. NuWatt Energy installs solar panels, heat pumps, EV chargers, and battery storage directly in Princeton—no subcontractors or lead-selling middlemen. We handle every step from system design through Princeton Municipal Light Department interconnection.