
The cost of home energy storage varies, but on average, EnergySage shoppers see storage prices between $1,000 and $1,600 per kilowatt-hour stored1. The total cost depends on factors such as battery size, manufacturer, type, power capacity, and installation fees2. A single home battery installation can cost at least $12,000 to potentially upwards of $20,0003. The average purchase and installation cost of a residential solar backup battery was $17,139 in the first quarter of 20224. A typical home needs about 11.4 kilowatt-hours of battery storage, which costs $9,041 after federal tax credits5. [pdf]
The median battery cost on EnergySage is $1,133/kWh of stored energy. Incentives can dramatically lower the cost of your battery system. While you can go off-grid with batteries, it will require a lot of capacity (and a lot of money!), which means most homeowners don't go this route. What exactly are home backup batteries?
Most home energy storage systems provide partial backup power during outages. These smaller systems support critical loads, like the refrigerator, internet, and some lights. Whole-home setups allow you to maintain normal energy consumption levels—but at a cost.
With independence from the utility grid, you can avoid the inconvenience of outages without sacrificing your daily routines. Most home energy storage systems provide partial backup power during outages. These smaller systems support critical loads, like the refrigerator, internet, and some lights.
For most battery systems, there's a limit to how much energy you can store in one system. To store more, you need additional batteries. And, in most cases, batteries can't store electricity indefinitely. Even if you don't pull electricity from your battery, it will slowly lose its charge over time.
When installing multiple batteries to power more appliances and devices, confirm the inverter can handle the combined output of all the batteries. Labor to install a solar battery costs $2,000 to $3,000 on average. Labor costs are lowest when installing a battery at the same time as a solar panel system.
Another driving force for solar with battery storage is energy security. With increasing severe weather events due to climate change often causing prolonged power outages, a battery system can provide instant backup power for a home or business.

Based on our bottom-up modeling, the Q1 2021 PV and energy storage cost benchmarks are: $2.65 per watt DC (WDC) (or $3.05/WAC) for residential PV systems, 1.56/WDC (or $1.79/WAC) for commercial rooftop PV systems, $1.64/WDC (or $1.88/WAC) for commercial ground-mount PV systems, $0.83/WDC (or $1.13/WAC) for fixed-tilt utility-scale PV systems, $0.89/WDC (or $1.20/WAC) for one-axis-tracking utility-scale PV systems, $30,326-$33,618 for a 7.15-kWDC residential PV system with 5 kW/12.5 kWh nameplate of storage, $2.04 - $2.10 million for a 1-MWDC commercial ground-mount PV system colocated with 600 kW/2.4 MWhusable of storage, $166 - $167 million for a 100-MWDC one-axis tracker PV system colocated with 60 MW/240 MWhusable of storage. [pdf]
The modeled $/kWh costs for 600-kW Li-ion energy storage systems vary from $469/kWh (4-hour duration) to $2,167/kWh (0.5-hour duration). The battery cost accounts for 41% of total system cost in the 4-hour system, but only 11% in the 0.5-hour system.
Dive into the research topics of 'U.S. Solar Photovoltaic System and Energy Storage Cost Benchmarks: Q1 2021'. Together they form a unique fingerprint. Ramasamy, V., Feldman, D., Desai, J., & Margolis, R. (2021).
This year, we introduce a new PV and storage cost modeling approach. The PV System Cost Model (PVSCM) was developed by SETO and NREL to make the cost benchmarks simpler and more transparent, while expanding to cover components not previously benchmarked.
Starting with the 2020 PV benchmark report, NREL began including PV-plus-storage and standalone energy storage costs in its annual reports.

Lithium-ion battery costs for different applicationsElectric Vehicles (EVs) According to BloombergNEF, an average EV battery cost is around $139 per kWh. . Solar Energy Storage Lithium batteries that store surplus solar energy, typically cost between $6800 and $10,700, excluding installation costs. . Consumer Electronics Lithium batteries are predominating the consumer electronics market. . [pdf]
Lithium-ion batteries are used in everything, ranging from your mobile phone and laptop to electric vehicles and grid storage.3 The price of lithium-ion battery cells declined by 97% in the last three decades. A battery with a capacity of one kilowatt-hour that cost $7500 in 1991 was just $181 in 2018.
The price of lithium-ion battery cells declined by 97% in the last three decades. A battery with a capacity of one kilowatt-hour that cost $7500 in 1991 was just $181 in 2018. That’s 41 times less. What’s promising is that prices are still falling steeply: the cost halved between 2014 and 2018. A halving in only four years.
As per the Energy Storage Association, the average lifespan of a lithium-ion battery storage system can be around 10 to 15 years. The ROI is thus a long-term consideration, with break-even points varying greatly based on usage patterns, local energy prices, and available incentives.
According to some projections, by 2030, the cost of lithium-ion batteries could decrease by an additional 30–40%, driven by technological advancements and increased production. This trend is expected to open up new markets and applications for battery storage, further driving economic viability.
Most lithium-ion batteries are not sold directly to consumers — you can’t run down to your typical corner drugstore to pick up a replacement battery for your iPhone, your PC, or your electric car. Instead, manufacturers buy lithium-ion batteries and build them into electronics and cars.
In addition to helping to boost the ongoing electrification of transportation, further declines in lithium-ion battery costs could potentially also increase the batteries’ usage in stationary applications as a way of compensating for the intermittent supply of clean energy sources such as solar and wind.
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