Complete Guide to Solar Energy in Massachusetts

Your complete resource for solar energy in Massachusetts. Everything you need to know about SMART incentives, net metering, tax credits, and solar installation across the Bay State.

Calculate Savings Learn the Basics
$3.10
Cost per Watt (2025)
4.7 years
Average Payback Period
900 MW
SMART 3.0 Capacity

Why Massachusetts is Perfect for Solar Energy

Exceptional Financial Incentives

Massachusetts combines 30% federal tax credits, 15% state tax credits, and SMART 3.0 performance payments for unmatched solar savings.

Highest Electricity Rates

With rates averaging 27.22¢/kWh—far above the national average—every kilowatt-hour produced delivers maximum savings.

Expanded Net Metering

Full retail rate credits for excess generation with 25kW system limits ensure your solar investment pays off faster.

Strong Legal Protections

20-year property tax exemptions and HOA protections guarantee your right to generate clean energy.

Quick Solar Facts

Average System Size: 7-8 kW
Annual Generation: 8,000-12,000 kWh
Federal Tax Credit: 30% (until December 31, 2025)
Typical Payback: 4.7-9 years
System Lifespan: 25-30 years

Explore Solar Topics

Laws & Regulations

SMART 3.0 program, property tax exemptions, HOA protections, net metering expansion, and state incentives.

Residential Solar

Complete guide for Massachusetts homeowners, system sizing, roof requirements, and climate considerations.

Costs & Savings

2025 pricing, cinstallation osts, tax credit calculations, SMART payments, and long-term savings analysis.

Financing Options

Solar loans, cash purchases, PACE financing, home equity options, and state-backed programs.

Installation Guide

Finding licensed installers, SMART applications, permitting process, and utility interconnection steps.

Solar 101

Solar technology basics, panel types, inverter options, battery storage, and system maintenance.

Community Solar

Shared solar subscriptions, SMART community allocations, and options for renters and condo owners.

Solar Calculator

Estimate your solar savings and system requirements.

Quick Solar Savings Calculator

Important 2026 Updates

SMART 3.0 Program Launch

Massachusetts launched Solar Massachusetts Renewable Target 3.0 in October 2025 with 900MW of new capacity. Performance-based incentives provide payments for 10 years with applications processed first-come, first-served.
Learn about SMART 3.0 →

Net Metering Expansion

February 2025 expansion increased residential system limits to 25kW while maintaining full retail rate credits. Homeowners now receive maximum value for excess solar generation sent to the grid.
Understand Net Metering →

Massachusetts Solar Laws & Regulations

Understanding the legal framework that supports solar energy in Massachusetts

Property Tax Exemption

20-year exemption for solar systems up to 25kW under MGL Chapter 59, Section 5. Solar equipment adds no property tax burden.
Learn More →

HOA Solar Rights

Chapter 40A protects homeowners from unreasonable solar restrictions. HOAs cannot prohibit installations or impose excessive requirements.
Learn More →

SMART Program

Performance-based incentives through Eversource, National Grid, and Unitil. Fixed per-kWh payments for 10 years with adders for storage and qualifying projects.
Learn More →