How much does a solar battery cost?

Historically, solar batteries have had a reputation for being prohibitively expensive, with many recorded instances where adding storage doubled the cost of a home solar installation. You can expect to pay between $7,000 and $18,000 for a solar battery.

Are solar batteries worth it?

Solar batteries are expensive, but financial incentives are available to lower the cost. Prices often depend on the battery’s storage capacity, expected life span, brand and other factors. Homeowners often find that solar batteries are worth it for energy security — even if they’re not worth it financially.

How much does a battery cost on EnergySage?

On EnergySage, Pytes USA Energy offers some of the most affordable batteries at about $651/kWh. You'll typically pay the most for Enphase batteries, which cost about $1,510/kWh. *The average price per kWh of the 10 most quoted batteries on EnergySage in the first half of 2025 (excluding Panasonic, which is closing its solar and storage business).

How much does a battery system cost?

Battery systems can range from 5 to 40 kWh, depending on your energy needs. Battery prices also vary by brand, capabilities, and installation factors. We’ll explore these factors later. On average, it costs around $1,300 per kWh to install a battery before incentives. With the 30% federal tax credit applied, the cost is closer to $1,000 per kWh.

How many kWh batteries do you need for a solar system?

For instance, there are 5 kWh batteries used mostly for improving the economics of solar, and there are 40 kWh battery systems that can back up your entire home during a power outage. While larger systems come with a higher price tag, you’ll likely pay less per kilowatt-hour of storage.

Are lead-acid batteries cheaper than lithium-ion batteries?

Lead-acid batteries are often significantly cheaper than their lithium-ion counterparts. However, lithium-ion batteries are slowly becoming the industry standard across nearly every solar energy application, thanks to their depth of discharge, storage potential and efficiency. Like most products, solar battery costs vary by manufacturer.