Utilities
Going Solar with CPS Energy
What CPS Energy customers need to know about solar interconnection, buyback credit, and system sizing in San Antonio and Bexar County.
CPS Energy is a municipal utility serving San Antonio and Bexar County. Net billing that offsets usage on the monthly statement.
How CPS Energy handles rooftop solar
Net billing that offsets usage on the monthly statement.
Interconnection is the step that determines when your system can legally export power. Your installer files the application, the utility reviews the one-line diagram and equipment certifications, and after a passed local inspection you receive permission to operate.
- Per-watt residential rebate with a local-installer bonus
- Largest municipally owned electric and gas utility in the United States
- Rebate budget is annual and can exhaust mid-year
Sizing a system in this territory
Because export credit varies, size the array to your actual annual kWh usage rather than to available roof space. Covering 80% to 100% of usage is the common target when buyback is weaker than the retail rate.
Use the Texas Solar Calculator with your city selected to see how the local rate and sun hours change the payback period.
What to ask before you sign
Any installer working in this territory should be able to answer these in writing.
- How many interconnections have you completed here in the past year?
- What is the expected timeline from contract to permission to operate?
- What export credit am I actually receiving, in cents per kWh?
- Who files the interconnection application and pays the fee?