More people use electricity at certain times of day, called peak hours, and utility companies like APS and SRP charge higher rates for electricity that’s used during these peak hours. This is called demand charging.
When you install solar panels, you can generate your own electricity and avoid buying from the grid during peak hours, reducing your electricity bills. However, peak demand hours are often at night, when your solar panels can not produce electricity. This is where solar battery storage comes in.
A solar battery will allow you to store the excess energy that your solar panels generate during the day when there is plenty of sunshine available. Then, you can draw on your stored energy during nighttime peak demand periods instead of buying from the grid.