How does solar work with the utility companies?
The components of your electric bill and the level of credit you receive as a customer with solar vary utility-by-utility. Just as utilities set the rates you pay for electricity, they’re also able to set the rate you are credited for exporting solar electricity back to the grid. Arizona’s major regulated utilities like APS and TEP offer solar customers an export rate to compensate for excess solar power sent to the grid. The export rate typically credits solar users less than when net metering was available. Under current rules from the Arizona Corporation Commission, the export rate at the time you go solar is locked in for 10 years. Each September or October, the export rate is scheduled to decrease by up to 10% and reset for new customers installing solar. Under these rules, the longer you wait to go solar, the less the export rate will be worth and the less you will be credited for your excess solar energy.