How Standalone Solar Batteries Lower Electric Bill with TOU Rates in Arizona
Battery backup offers a unique solution to help lower your electricity bills under Arizona’s time-of-use (TOU) rates, even if you don’t have a solar panel system. By charging your battery bank when rates are cheap and using that energy during peak usage times, a well-designed battery storage system can help stabilize your costs, and even pay for itself over time.
How TOU Rates Work in Arizona
Under TOU programs, utilities like APS and SRP charge different prices for electricity at different times of the day. Power is cheaper during off-peak hours, often late at night and mid-day, and more expensive when demand is at its highest.
Batteries create an opportunity to use stored energy during peak hours and buy most of your grid power when it costs less.
How to Use Home Battery Backup for Time-of-Use Optimization
You don’t have to install solar panels to enjoy the benefits of a solar battery system. A standalone battery can be programmed to:
- Charge from the grid during off-peak, low-cost hours
- Discharge during on-peak hours, when rates and demand are at the highest
This practice is sometimes called time-of-use optimization or “energy arbitrage” and leads to cheaper electricity for APS and SRP customers on a TOU plan. Because of increasing rates and peak hours, the potential savings and payback periods from a battery system are at an all-time high. And unlike sacrificing comfort to cut bills, you don’t have to change your daily routine, as your battery will do all of the work in the background.
Beyond Bills: Reliable Backup Power
Standalone batteries don’t just lower electricity bills, they also provide backup power when the grid goes down. A battery backup system can keep the essentials running during an outage, which are becoming more common as growing demand and intense heat waves stress the grid.
If you decide to add solar panels later, we design systems that are ready to scale, so you can start with a standalone battery now and grow into a full home solar setup when the time is right.
Battery Storage Experts in Greater Phoenix
SouthFace Solar & Electric has deep experience designing energy storage systems tailored to Arizona’s utilities, TOU rate plans, and desert conditions. Our team installs the best battery storage systems on the market today from brands like Tesla, Enphase, and FranklinWH.
When you work with our team, you get:
- Custom battery designs built around your home and electricity usage
- Smart programming to help you optimize TOU rate plans
- Professional installation and electrical services to integrate batteries, generators, or even future solar panels
- Ongoing monitoring, troubleshooting, and maintenance from a dedicated local team
