Home solar battery cost in 2026, in one look
As of July 2026, a home solar battery typically costs about $10,000 to $18,000 installed before incentives, or roughly $700 to $1,450 per usable kWh, with most homeowners near $15,000 for a standard 13.5 kWh unit (EnergySage, February 2026). According to MySolarFY’s July 2026 analysis of that marketplace pricing, the average works out to about $1,100 per usable kWh. The big 2026 change is that the 30% federal residential tax credit that used to cover home batteries ended December 31, 2025, so a battery installed in 2026 no longer qualifies for it, and state or utility programs are now the main way to lower the price.
Updated for 2026. A home battery stores the solar power your panels make so you can use it at night or during an outage, but it is a large, separate purchase on top of the panels, so the first question is almost always what it costs. This guide gives you real, sourced 2026 prices by battery size and by brand, our own estimate of the cost per usable kilowatt-hour, the incentives that still apply now that the federal credit has ended, and how to tell whether a battery is worth it for your home.
Key numbers, up front
- Typical installed price: about $15,000 for a standard 13.5 kWh home battery before incentives, as of February 2026 (EnergySage).
- Cost per usable kWh: about $700 to $1,450, averaging roughly $1,100 across the ten most-quoted batteries, as of February 2026 (EnergySage).
- Federal credit: the 30% residential clean energy credit (Section 25D) ended for systems placed in service after December 31, 2025, so a 2026 battery does not qualify (IRS, as of July 2026).
- California SGIP: up to about $1,000 per kWh for resilience-eligible customers, and up to about $1,100 per kWh under the low-income storage-equity budget, as of 2026 (CPUC).
- Our estimate: per MySolarFY’s July 2026 analysis, a 10 kWh battery runs about $11,000 and a 13.5 kWh about $15,000 installed before incentives.
Home solar battery cost by brand in 2026
Prices cluster by usable capacity, but the cost per kWh varies a lot by brand. The table below lists the usable capacity (the energy you can actually draw, not the nameplate rating) and the typical installed price before incentives for the batteries homeowners ask about most. Capacities are from each battery’s independent EnergySage equipment listing; prices and the per-kWh figures are from the EnergySage energy-storage marketplace (as of February 2026). We deliberately do not cite manufacturer marketing pages.
| Battery (model) | Usable capacity | Typical installed cost (before incentives) | Approx. cost per usable kWh | Source |
|---|---|---|---|---|
| Tesla Powerwall 3 | 13.5 kWh | ~$13,700 (single unit) | ~$1,020 | EnergySage |
| Enphase IQ Battery 5P | 5.0 kWh per unit | ~$9,000 to $13,000 (one unit) | ~$1,420 | EnergySage |
| FranklinWH aPower 2 | 15 kWh | ~$18,000 | ~$1,200 | EnergySage |
| LG RESU Prime 16H | 16 kWh | ~$14,000 to $19,000 | ~$900 to $1,190 | EnergySage |
| SolarEdge Home Battery | 9.7 kWh | ~$11,000 to $17,000 | ~$1,200 to $1,600 | EnergySage |
A note on capacity labels, because installers use both. Tesla’s Powerwall 3 is 13.5 kWh usable out of a 14 kWh nameplate, and SolarEdge’s “BAT-10K” is 9.7 kWh usable despite the 10 in its name (EnergySage, as of July 2026). Always size and compare on usable kWh, since that is the number that decides how long the battery runs your home.
How much does a home solar battery cost by size?
The fastest way to budget is cost per usable kWh times the size you need. Across the ten most-quoted batteries, EnergySage’s February 2026 data puts installed cost at roughly $700 per kWh at the low end, about $1,100 per kWh on average, and up to about $1,450 per kWh for premium brands (EnergySage). Applying those three rates to common battery sizes gives the estimate below. This is MySolarFY’s own July 2026 calculation, so treat it as a planning estimate, not a quote.
Inputs and assumptions: installed cost per usable kWh of $700 (low), $1,100 (average), and $1,450 (high) from EnergySage’s February 2026 marketplace of the ten most-quoted home batteries; figures are before any incentives; they cover the battery, inverter or gateway, and standard installation, but not a main-panel upgrade if your home needs one.
| Battery size (usable) | Low (~$700/kWh) | Typical (~$1,100/kWh) | High (~$1,450/kWh) | Roughly backs up |
|---|---|---|---|---|
| 5 kWh | ~$3,500 | ~$5,500 | ~$7,250 | A few essential circuits (fridge, wifi, phones) |
| 10 kWh | ~$7,000 | ~$11,000 | ~$14,500 | Fridge, lights, and outlets through an evening |
| 13.5 kWh | ~$9,500 | ~$14,900 | ~$19,600 | Most of a typical home’s evening and overnight use |
| 20 kWh | ~$14,000 | ~$22,000 | ~$29,000 | Whole-home or multi-day partial backup |
These match the whole-system figures from the brand table above: a single 13.5 kWh unit landing near $14,900 at the average rate lines up with EnergySage’s roughly $15,200 typical price for that size (EnergySage, as of February 2026). For a number tied to your own roof, panels, and utility rate, check what you qualify for below.
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Why home batteries cost what they do
The battery cabinet is only part of the price. A quoted installed cost bundles four things: the battery itself, the inverter or gateway that connects it to your panels and the grid, the labor and permitting to install and inspect it, and, in older homes, a possible electrical main-panel upgrade so the panel can handle the new circuits. The figure below shows those pieces.
Home battery prices have not fallen the way solar panels have. National cost benchmarks track residential solar-plus-storage cost mainly in dollars per watt of solar, with the battery added on top (U.S. Department of Energy solar cost benchmarks, as of 2026), and Lawrence Berkeley National Lab’s tracking of installed systems shows the battery component holding roughly flat rather than dropping year over year (LBNL Tracking the Sun, 2024 edition). The practical takeaway is that “wait for batteries to get much cheaper” is weaker advice than it is for panels, so the better lever on your net price today is the incentives below, not the calendar.
How much does it cost to add a battery to existing solar?
Adding a battery to a system you already own is usually a battery-only job, so you pay for the battery, a compatible inverter or gateway, and the retrofit labor, not a whole new solar array. That typically lands in the same $10,000 to $18,000 range as a battery bought with new panels, and sometimes a little more, because a retrofit can need extra electrical work to tie the battery into an existing inverter and panel (EnergySage, as of February 2026). Two things drive the retrofit cost: whether your current inverter is battery-ready or has to be replaced, and whether your main service panel needs an upgrade to add the backup circuits. Ask any installer to quote the battery, the inverter or gateway, and any panel work as separate line items so you can see what the retrofit itself adds.
What no longer applies in 2026: If you read an older guide or even a current search result that says you can knock 30% off a home battery with the federal tax credit, that is out of date. The 30% federal residential credit (Section 25D) that used to cover home batteries of 3 kWh or more ended for systems placed in service after December 31, 2025 (IRS, as of July 2026). A battery whose installation is completed in 2026 does not qualify. Budget from the full price, then subtract only the state and utility programs you actually qualify for.
Does the federal tax credit still cover a home battery in 2026?
No. The federal residential credit for home batteries ended after December 31, 2025. The 30% Residential Clean Energy Credit (Section 25D) covered qualified home battery storage of at least 3 kWh from 2023, but it ended for property placed in service after December 31, 2025 under the 2025 budget law, and the IRS treats a battery as placed in service when its installation is completed (IRS Residential Clean Energy Credit; IRS OBBBA FAQ, as of July 2026). So a homeowner who finishes a battery install in 2026 cannot claim the 30% credit for it. One narrow exception is not the homeowner’s to claim: a separate business credit (Section 48E) can apply to a third-party-owned lease or PPA system, but the company that owns the system claims it, not you (IRS Clean Electricity Investment Credit, as of July 2026). For the full picture, see our guide on what the end of the federal solar tax credit means in 2026. MySolarFY does not provide tax advice; confirm your own situation with a tax professional.
The incentives that still lower battery cost in 2026
With the federal credit gone, state and utility programs are the real discounts now. These vary widely by where you live, and the biggest ones are targeted at low-income households and homes in wildfire or frequent-outage areas. The table shows the programs homeowners ask about most.
| Program (2026) | What it pays | Who qualifies | Source |
|---|---|---|---|
| Federal Section 25D credit | Ended for systems placed in service after Dec 31, 2025; no longer available | Formerly homeowners; not available in 2026 | IRS |
| California SGIP, general market | A small, capacity-based rebate that is often waitlisted | California residential storage customers | CPUC |
| California SGIP Equity | ~$850 per kWh of battery capacity | Income-qualified California customers | CPUC |
| California SGIP Equity Resilience | ~$1,000 per kWh of battery capacity | Medical-baseline or high-fire-risk / PSPS customers | CPUC |
| CA Residential Solar and Storage Equity | Up to ~$1,100 per kWh of storage | Low-income households, statewide since June 2, 2025 | CPUC |
| Northeast ConnectedSolutions | Performance payments for letting the utility use your battery at peak times | Battery owners in MA, RI, CT, NH | SEIA |
Two cautions on the numbers above. California’s general-market SGIP tier is small and its budget is frequently exhausted, so the meaningful money is in the equity and resilience tiers and the low-income storage-equity budget (CPUC, as of 2026). And ConnectedSolutions pays per kilowatt your battery discharges during peak events, but the exact rate differs by utility and season, so confirm the current figure with your own utility rather than budgeting around a single number. Outside these examples, many other states and utilities run their own rebates and time-of-use programs, so the incentive that lowers your price depends on your address.
Is a home battery worth the cost?
A battery is worth it when backup, outage protection, or time-of-use bill savings matter to you, and it is a weaker deal if you only want to cut a normal monthly bill. Where net metering already credits your exports near retail value, adding a battery saves relatively little on its own, because the grid is effectively acting as your free storage (see how net metering credits the power your panels export). A battery earns its cost in three situations: you face frequent or long outages and want your fridge, medical equipment, or heat to keep running; you are on a time-of-use rate where evening power is expensive and you can shift stored solar into those hours; or your utility has cut export credits, so storing your own power beats selling it back cheaply. The common disadvantages are the up-front cost above, a usable life of roughly 10 to 15 years (most carry a 10-year warranty), and some energy lost to round-trip charging.
A worked example, so the payback is not just a feeling. Say you install a 13.5 kWh battery at the roughly $14,900 average price and you are on a time-of-use plan with about a 30 cents per kWh gap between peak and off-peak power (a common spread on many California and Northeast TOU rates; check your own tariff, because this one is an assumption, not a quoted rate). If you cycle the battery once a day and lose roughly 10 percent to round-trip charging, it shifts about 12 kWh of expensive evening use into cheap hours, saving on the order of $1,300 a year. That is a simple payback of roughly 11 years before any incentive, per MySolarFY’s July 2026 estimate, which is why a battery bought purely to shave a normal bill rarely pays for itself inside its warranty, while one bought for backup or resilience is buying something a spreadsheet does not capture. A state or utility rebate that takes several thousand dollars off the price shortens that payback accordingly. To weigh a battery against panels alone, see the financial case for whether solar panels are worth it and how solar lowers your monthly electricity bill.
How to compare home battery quotes
Rather than chasing a single “best battery,” compare quotes on objective specs so you are paying for capacity you will use. A clean comparison looks at the same points across every quote:
- Usable kWh, not nameplate, so you compare the energy you can actually draw.
- Cost per usable kWh, the figure that lets you compare a small premium battery against a larger value one on equal terms.
- Continuous and peak power output (kW), which decides what you can run at once during an outage, not just for how long.
- Warranty length and the retained-capacity guarantee, for example a 10-year warranty to a stated percentage of original capacity.
- Round-trip efficiency, how much of the stored energy you get back, and whether the quote includes any main-panel upgrade.
For how batteries fit alongside panels and inverters, see how batteries fit into a modern home solar system, and for the batteries best suited to outage protection, see the best home batteries for backup power. You can also compare against what the solar panels themselves cost, and see how we source our cost and incentive figures. Then browse the rest of our solar resources for the full picture.
Check which solar and battery programs are available at your address →
Frequently asked questions
How much does a solar battery cost in 2026? A home solar battery typically costs about $10,000 to $18,000 installed before incentives, with a standard 13.5 kWh unit landing near $15,000 (EnergySage, as of February 2026). Measured per usable kilowatt-hour, that is roughly $700 to $1,450, averaging about $1,100 across the most-quoted batteries. The exact figure depends on the battery’s usable capacity, the brand, whether your home needs an electrical panel upgrade, and whether you add it with new panels or retrofit it to an existing system. Because the federal tax credit no longer applies in 2026, the number you actually pay now turns mostly on state and utility incentives.
How much does it cost to add a battery to existing solar? Adding a battery to a system you already own generally costs about the same $10,000 to $18,000 as buying one with new panels, since you pay for the battery, a compatible inverter or gateway, and the retrofit labor rather than a whole new array (EnergySage, as of February 2026). A retrofit can cost a bit more if your existing inverter is not battery-ready and has to be replaced, or if your main service panel needs an upgrade to carry the new backup circuits. Ask for the battery, the inverter or gateway, and any panel work as separate line items so you can see exactly what the retrofit adds.
Is the 30% solar battery tax credit gone? Yes, for 2026. The 30% federal Residential Clean Energy Credit (Section 25D), which covered qualified home batteries of 3 kWh or more, ended for systems placed in service after December 31, 2025 (IRS, as of July 2026). A battery whose installation is completed in 2026 cannot claim it. Many web pages and even some AI answers still say the 30% credit applies, but that is out of date. A separate business credit (Section 48E) can apply to third-party-owned lease or PPA systems, but the company that owns the system claims it, not the homeowner. MySolarFY does not provide tax advice; confirm your situation with a tax professional.
What is the lifespan of a solar battery? Most home lithium batteries are built to last roughly 10 to 15 years, and the majority carry a 10-year warranty that guarantees the battery will still hold a stated share of its original capacity at the end of the term (EnergySage, as of February 2026). Batteries slowly lose usable capacity as they cycle, so a unit rated at 13.5 kWh when new will store somewhat less after a decade of daily use. When you compare quotes, check both the warranty length and the retained-capacity percentage, because a longer guarantee to a higher percentage is worth more over the life of the system.
Is it worth getting a battery for solar panels? It depends on why you want one. A battery is worth the cost mainly for backup during outages, for shifting stored solar into expensive evening hours on a time-of-use rate, or where your utility has cut what it pays for exported power. If your utility still credits solar exports near retail value through net metering, a battery adds relatively little pure bill savings, because the grid already acts as your storage (net metering explained). Weigh the up-front cost, a roughly 10 to 15 year lifespan, and some energy lost to charging against the value you place on keeping the lights on. See whether solar panels are worth it for the wider math.
Can I get a home battery with no up-front cost? Some homeowners can, through a solar lease or power purchase agreement (PPA) that includes storage, where eligible, which can mean no out-of-pocket cost at installation in exchange for monthly payments. This is not free solar or a free battery; it is a long-term agreement, often 20 to 25 years, and total payments can exceed the cost of buying the system outright. On a lease or PPA the company that owns the equipment, not you, keeps any tax benefit and most incentives, while your benefit is a lower or fixed power price. If you want to own the battery and capture the state and utility incentives yourself, a cash purchase or loan is the path that keeps them. Check what you qualify for before deciding.
Reviewed by the SolarFY Editor. Cost figures were verified against EnergySage’s energy-storage marketplace and battery equipment listings, and incentive and tax figures against the IRS, the U.S. Department of Energy, Lawrence Berkeley National Lab, and the California Public Utilities Commission, as of July 2026. Battery prices, warranties, and state and utility incentive levels change often, so confirm current terms before you decide. MySolarFY does not provide tax or financial advice; consult a licensed professional about your own situation. Learn more about the SolarFY Editor and how we work and how we source our cost and incentive data.
MySolarFY is a free service that matches homeowners with licensed solar installers. We are not an installer, financing company, tax advisor, or government program. “No up-front cost” refers to qualifying lease or PPA financing, where eligible homeowners may have no out-of-pocket cost at installation; lease and PPA terms typically run 20 to 25 years, may include an annual price escalator, and total payments may exceed the cost of a cash purchase. Homeowners do not get the federal residential credit (Section 25D) that ended for systems placed in service after December 31, 2025. Solar panels and batteries are not free and monthly payments may apply. Prices, incentives, savings, and rates vary by home, brand, state, and utility and are not guaranteed. See our full disclaimer.
