On top of being able to take advantage of electricity savings, federal and state tax credits, and receiving SRECS (Solar Renewable Energy Credits) production income, you also get to take advantage of Net Metering. Net Metering is the policy in which your solar system pushes any extra power back into the utility grid allowing you to pull energy from it when you need it.
Your solar panels are producing the majority of their electricity in daylight hours during which most people are not home. Where does all that generated electricity go? Back into the grid! When you are home towards the evenings and/or weekends and need energy to power your home, you pull it from the grid which acts as your unlimited battery source.
Think about net metering as roll over minutes. Whatever you don’t use the moment it’s produced goes back into the grid rolls over for you to use later on in the day when you need. If you use more than what your solar array produces, you’ll pay your utility company directly at their current rate. The net metering process, in actuality, occurs on paper. The meter keeps track of all the usage and electricity generation.
To read more about how Net Metering is calculated and billed in Massachusetts, visit DSIRE MA website (Database of State Incentives for Renewables and Efficiency.)