How Much Backup & Savings From a Home Battery?
Get an instant estimate of your backup hours, bill savings, and net cost based on your state's outages and rebates — no email required.
Home Battery Savings Calculator
Instant estimate — no email required
A typical home battery (e.g. a Tesla Powerwall) is ~13.5 kWh.
Home Battery Costs by State
Click any state to see detailed costs, city-by-city outage data, and local rebates.
Alabama
7 hrs/yr outageAlaska
8 hrs/yr outageArizona
4 hrs/yr outageArkansas
8 hrs/yr outageCalifornia
10 hrs/yr outageColorado
5 hrs/yr outageConnecticut
8 hrs/yr outageDelaware
5 hrs/yr outageFlorida
10 hrs/yr outageGeorgia
6 hrs/yr outageHawaii
5 hrs/yr outageIdaho
4 hrs/yr outageIllinois
6 hrs/yr outageIndiana
6 hrs/yr outageIowa
6 hrs/yr outageKansas
7 hrs/yr outageKentucky
7 hrs/yr outageLouisiana
14 hrs/yr outageMaine
12 hrs/yr outageMaryland
5 hrs/yr outageMassachusetts
6 hrs/yr outageMichigan
8 hrs/yr outageMinnesota
6 hrs/yr outageMississippi
9 hrs/yr outageMissouri
7 hrs/yr outageMontana
5 hrs/yr outageNebraska
6 hrs/yr outageNevada
4 hrs/yr outageNew Hampshire
9 hrs/yr outageNew Jersey
6 hrs/yr outageNew Mexico
5 hrs/yr outageNew York
6 hrs/yr outageNorth Carolina
8 hrs/yr outageNorth Dakota
5 hrs/yr outageOhio
7 hrs/yr outageOklahoma
9 hrs/yr outageOregon
6 hrs/yr outagePennsylvania
6 hrs/yr outageRhode Island
7 hrs/yr outageSouth Carolina
7 hrs/yr outageSouth Dakota
5 hrs/yr outageTennessee
7 hrs/yr outageTexas
12 hrs/yr outageUtah
4 hrs/yr outageVermont
10 hrs/yr outageVirginia
6 hrs/yr outageWashington
5 hrs/yr outageWest Virginia
10 hrs/yr outageWisconsin
6 hrs/yr outageWyoming
5 hrs/yr outageHow It Works
Step 1: Pick a Size
Tell us your battery size and state. We estimate backup hours, cost, and bill savings.
Step 2: See Your Numbers
Get an instant breakdown of installed cost, rebates, backup hours, and 15-year savings.
Step 3: Get Free Quotes
Connect with licensed local installers and compare quotes at no cost or obligation.
Planning other home-energy upgrades?
A home battery pairs naturally with solar, a heat pump, and an EV charger. Run the numbers on the rest of your electrification plan:
Frequently Asked Questions
How much does a home battery cost in 2026?
A typical home battery (around 13.5 kWh, like a Tesla Powerwall) costs $13,000–$16,500 installed in 2026. State and utility rebates can cut that substantially — Connecticut pays up to $16,000 and Vermont up to $10,500.
Is there still a federal battery tax credit in 2026?
No. The 30% federal Residential Clean Energy Credit (Section 25D), which covered standalone home batteries, expired December 31, 2025 under the One Big Beautiful Bill Act. Batteries installed in 2026 do not qualify. State and utility battery programs are now the main incentives.
Do home batteries save money?
On electricity bills alone, usually only modestly — by storing cheap off-peak power and using it at expensive peak times. Bill savings are largest in high time-of-use states like California. Most homeowners buy a battery primarily for backup power during outages; the bill savings are a bonus, and generous state rebates can shorten the payback.
How long will a home battery power my house?
A 13.5 kWh battery runs a home's essentials (fridge, lights, internet, some outlets) for roughly 12–18 hours, or whole-home for several hours. You can add more batteries for longer backup. Our calculator estimates backup hours for any battery size.
Do I need solar to get a home battery?
No. Standalone batteries qualify for state and utility programs on their own and provide backup power and time-of-use savings without solar. Pairing with solar adds the ability to recharge during a multi-day outage.