Serving SC · NC · GA · FL · VA — Licensed & Insured
(800) 567-8900Home battery backup keeps your lights on, food cold, and family safe — through storms, grid failures, and anything the Southeast throws at you.
10-yr
Warranty
100%
Automatic Switchover
<0.02s
Backup Response Time
30%
Federal Tax Credit
How It Works
A home battery system stores energy from your solar panels or the grid, then automatically delivers it when you need it most — during outages, peak pricing hours, or overnight when your panels aren't producing.
Daytime
Solar Charges Your Battery
Your panels produce more than you use. The excess charges your battery to 100% — free energy stored for later.
Night
Battery Powers Your Home
After sunset, your battery takes over. You draw from stored solar energy instead of paying the utility for grid power.
Outage
Automatic Backup in <0.02s
When the grid goes down, your battery switches on automatically — faster than you can blink. No interruption, no generator noise.
Peak Hours
Avoid Expensive Peak Rates
If your utility charges more during peak hours, your battery discharges then and recharges during cheap off-peak times.
Why Battery Backup
A home battery does more than keep the lights on during storms — it transforms how your home uses and pays for energy.
The Southeast sees more severe weather than almost anywhere in the US. When the grid goes down, your battery switches on automatically in milliseconds — no generator, no noise, no fuel.
Store cheap off-peak electricity and use it during expensive peak hours. Maximize your solar self-consumption. Avoid demand charges. Your battery pays for itself.
Without a battery, excess solar energy is sold back to the grid at low rates. With a battery, you store it and use it yourself — at full retail value.
Configure your system to back up your entire home or just critical circuits. You choose what stays on — from the whole house to just the essentials.
Monitor your battery, solar production, and home energy use in real time from your phone. Set charge/discharge schedules, get alerts, and optimize automatically.
Every battery system we install comes with a 10-year manufacturer warranty covering capacity and defects. We stand behind every installation with our own workmanship guarantee.
Outage Simulator
Select the appliances you want to keep running during an outage and see how long your battery will last. Pair with solar for unlimited daytime backup.
Add Solar = Unlimited Backup
When paired with solar panels, your battery recharges every day — giving you backup power that lasts through multi-day outages, not just hours.
Learn about solar30% Federal Tax Credit — Battery systems installed with solar qualify for the full Residential Clean Energy Credit, reducing your net cost by nearly a third.
Select what you want to keep running during a power outage.
Estimated Backup Duration
42.2hrs
320W load · 13.5 kWh battery
Solar and battery backup are the ultimate home energy combination. Your panels generate free power all day, your battery stores it for nights and outages — and together they qualify for the 30% federal tax credit.
Unlimited
Backup Duration w/ Solar
100%
Avg. Bill Reduction
25 Yrs
Combined Warranty
30%
Federal Tax Credit
FAQ
Everything you need to know about home battery backup. Our team is happy to walk you through sizing, costs, and incentives.
Get a free battery backup consultation from SmartSun. We'll size the right system for your home, explain your incentives, and give you an exact quote.