You don’t necessarily need batteries for your solar energy system.
Depending on your goals for this project, we will help you evaluate the efficacy of a battery backup system. Do you want to have power when the utility grid goes out? Is your goal lowering your monthly bills? A backup battery bank can add as much as 25% in cost to a residential solar PV system. Also, it may will yield about 7–10% less energy if it’s battery-tied than its grid-tied counterpart.