When you generate your own power from a solar energy system or other renewable technology, your home or business’ onsite electrical load will be served first and any electricity you don’t consume will be exported to the grid. Most of the time, customers use the power from their solar or renewable systems, but may still draw power from the grid. Sometimes, particularly during the day, the system may generate more energy than the home or business requires, and the surplus power is exported to the grid.
PG&E only has a single meter that is connected to the home and the only information that is recorded is net usage—either the amount of energy that is flowing to the house (a positive number), or the amount of energy that is flowing to the grid (a negative number). Some customers may measure the production from the solar or other renewable system using a separate meter attached directly to the system.
Learn more about Net Energy Metering and Billing >>