What is Net Metering?

How does Net Metering work?
Net metering allows the grid to be a giant battery for solar. When the sun shines, the electricity produced will be used to power your home, and your electric meter will not spin. When you produce more than you use, the excess electricity will flow back to the grid, and your meter spins backwards. When you do not produce enough solar electricity for your home, your meter spins forward as it always has. Learn more about net metering in Vermont here and here.

What is the “solar adder”?

Vermont state law requires that utilities provide at least a minimum level of value for solar net metering. The way the law is put into effect depends on the utility involved and its rate structure.

If your utility is Green Mountain Power, then the solar adder functions as bonus credit on your electric bill for each kWh of solar you produce. You receive the solar adder for the first 10 years of your solar array. Learn more about GMP’s program .

Can my bill get to zero?
Yes, all extra electricity produced is converted to a dollar value, and this can be used to offset all charges and get your electric bill to zero.

What happens with extra electricity?
If you produce more electricity than you use in a month, a credit for this electricity can be carried forward for 12 months. This will be used to offset extra usage in future months. For most houses in Vermont, this means that extra solar electricity generated in the summer can be used to offset electricity usage in the winter.

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