Resource Center

Learn how to decide what size solar system you need. Understand offset, roof limits, future energy plans, and avoid oversizing or undersizing.

Massachusetts is reviewing net metering rules. No changes have been made yet, but understanding how net metering works — and why timing matters — can help homeowners stay informed.

Choosing a solar installer is a decision about long-term structural accountability, not just a one-day installation. Learn how to evaluate companies to ensure your 25-year investment is supported.

Learn how net metering works in Massachusetts, how utilities apply bill credits, and what eligibility rules and constraints affect residential solar.

In 2025, Massachusetts expanded its solar net metering program, raising the residential cap from 10 kW to 25 kW AC to let homeowners install larger systems, earn full retail-rate credits,...

Keep your home powered during outages with a battery backup from Valley Solar. Learn how storage systems provide energy security for Massachusetts homes.

When the grid goes down, standard solar shuts off, but battery storage keeps your home powered. Learn how energy storage works and how Valley Solar can help you maximize incentives...

Learn how Massachusetts homeowners earn cash and support your community through Virtual Power Plants. Valley Solar makes it simple.

An overview of Massachusetts solar incentive programs, tax credits, and exemptions, including state, utility, and local policies for residential solar.

Learn the basics of net metering, how solar credits work, and what to know before exploring solar in Massachusetts.