Home battery backup system
Battery Backup Systems

NEVER LOSE
POWER AGAIN

Home 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

SMART POWER,
24/7

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.

Home battery storage unit
Battery Status
CHARGING
78% charged~2.4 hrs to full

Why Battery Backup

MORE THAN JUST
BACKUP POWER

A home battery does more than keep the lights on during storms — it transforms how your home uses and pays for energy.

Storm & Outage Protection

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.

Lower Electric Bills

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.

Maximize Solar Value

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.

Whole-Home or Essential Backup

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.

Smart Monitoring & Control

Monitor your battery, solar production, and home energy use in real time from your phone. Set charge/discharge schedules, get alerts, and optimize automatically.

10-Year Warranty

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

HOW LONG WILL
YOU STAY ON?

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 solar

30% Federal Tax Credit — Battery systems installed with solar qualify for the full Residential Clean Energy Credit, reducing your net cost by nearly a third.

OUTAGE SIMULATOR

Select what you want to keep running during a power outage.

13.5 kWh
10 kWh (1 battery)54 kWh (4 batteries)

Estimated Backup Duration

42.2hrs

320W load · 13.5 kWh battery

Best Combo

SOLAR +
BATTERY BUNDLE

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 power during daylight hours
  • Eliminate your electric bill entirely
  • Both systems qualify for 30% tax credit
  • Single installation crew — one project
  • Monitored and managed from one app
Explore Solar

Unlimited

Backup Duration w/ Solar

100%

Avg. Bill Reduction

25 Yrs

Combined Warranty

30%

Federal Tax Credit

FAQ

BATTERY
QUESTIONS

Everything you need to know about home battery backup. Our team is happy to walk you through sizing, costs, and incentives.

Free Quote

READY TO STAY
POWERED UP?

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.