How to Choose the Right Home Batteries
Choosing a home battery means deciding how much of your house you want to keep running during an outage, and for how long. A small battery can keep your refrigerator, internet, and a few lights on for a few hours. A whole-home battery can run your HVAC, well pump, and major appliances for a full day or more. The right size depends on your backup goals, your panel's electrical capacity, and whether you're pairing the battery with solar.
Decide what you need to keep running
Walk through your home's circuits and identify what matters most during an outage: refrigeration, medical equipment, well pumps, sump pumps, home office equipment, and heating or cooling. Battery capacity is measured in kWh (kilowatt-hours) - the total energy stored - while continuous output (kW) determines how many things you can run at once. A 13.5kWh battery with high continuous output can run more simultaneously than a smaller battery, even if both could theoretically "last" the same number of hours under light load.
Understand installed cost, not just battery price
The battery itself is often less than half the total project cost. Installation typically requires an electrician, a compatible inverter (or a built-in one), permitting, and sometimes an electrical panel upgrade. A battery listed at $9,000-$14,000 "installed" already accounts for this - but if you're comparing a standalone battery price against an "installed" price elsewhere, you're not comparing like for like. Always ask for a total installed cost before comparing options.
Check battery chemistry and installer network
Most modern home batteries use lithium iron phosphate (LFP) chemistry, which is generally safer and more durable over repeated charge cycles than older lithium-ion chemistries. Beyond the battery itself, check how easy it is to find a certified installer in your area - some manufacturers have limited installer networks, which can mean longer wait times or fewer competitive quotes.
Confirm current incentive eligibility before you commit
The homeowner 30% federal Residential Clean Energy Credit ended after December 31, 2025, so new battery projects in 2026 should not assume that savings. Many states and utilities still offer separate battery rebates or virtual power plant incentives, so verify the current programs in your area before finalizing the payback math.
