With MECO’s “Customer Grid Supply” (CGS) program, the solar PV system sends all excess energy back to the grid, after powering the loads in your house and charging your battery, if you have one.
You receive credits for the energy you send back to the grid at a rate of .17 cents per kwh. This credit rate is subject to change, which is why a battery will maximize your savings. Credits are banked on a monthly basis but excess credits are not rolled over to the next month, they are lost.
During the day, much of the Sun’s energy goes to power the loads in your house, bypassing the meter. Only the excess is what you receive credits for.
This program has been replaced by the CGS+ program. If you missed the opportunity, not to worry, MECO’s Customer Self Supply is still open, but you will require a battery to maximize your savings.