For every kilowatt-hour (KWH) of excess power that is fed back into the grid, the solar system owner receives a credit on their utility bill. These credits are typically accrued on an annual basis.
In times when the solar system is not generating adequate power, such as at night or on cloudy days, the consumer draws electricity from the grid. The accumulated credits are then utilized to offset the consumption, reducing or even eliminating the electricity cost from the grid.
Any surplus unused credits can be reconciled at the conclusion of a designated settlement period, often on an annual basis. Depending on the utility’s policies, these credits may either be carried over to the next billing period or reimbursed to the consumer at a predetermined rate.