How Much Are Solar Batteries? What to Expect for Your Home

Solar home battery systems typically cost between $12,000 and $22,000.¹

But many homeowners don’t pay that upfront. With options like solar leases or subscription-style plans, you can often get solar plus battery storage installed with little to no upfront cost and instead pay a predictable monthly rate over time.

Your total cost depends on factors like how much storage capacity you need, your home’s installation setup, and the equipment you choose. In this article, we’ll break down what impacts solar battery pricing, explore top battery options, and explain how different payment models work so you can find the right fit for your home.

Adding a solar battery isn’t just about the price. It’s about keeping your home running during power outages, making the most of the solar energy you generate, and supporting greater energy independence.

Solar batteries cost at a glance  

The sticker price on a battery system includes way more than just the sleek box hanging in your garage. You're paying for thoughtful system design, navigating permit paperwork, skilled electrical work, professional installation, and warranties that have your back for years to come.

• Typical installed cost nationwide: $12,000 to $22,000 

• How location affects costs: Solar battery installation costs vary based on your home’s layout, local labor rates, and permitting requirements. As a result, your total cost will vary by region.

• Typical home battery size: One 10 kWh battery keeps your essential appliances running; two batteries can back up nearly your whole home.²

Geography plays a surprisingly large role in your final solar battery quote. In states with newer housing stock, straightforward electrical codes and accessible home layouts often keep installation costs lower. 

Conversely, in older regions, installers often encounter complex wiring in historic basements or stricter permitting hurdles, which can nudge the price upward. Regardless of where you live, the goal is the same: keeping the lights on with reliable backup power when the grid goes down. This allows you to achieve energy independence from traditional utility companies.

Are solar batteries getting cheaper?

Yes, the trend is your friend here. Since 2010, there has been a 64%, 69%, and 82% reduction in the cost of residential, commercial-rooftop, and utility-scale PV solar battery systems, respectively.³ 

As lithium-ion battery factories scale and supply chains mature, battery prices and solar battery hardware costs continue to dip marginally year over year. 

Financial incentives available right now make adding a solar battery more accessible than ever. While battery hardware gradually improves, having reliable energy storage and making the most of your solar power today is often the smarter move than waiting for future changes in the market.

Plus, inflation tends to push labor and solar battery installation costs up, canceling out hardware drops and making the overall cost expensive.

Why do solar batteries cost more than solar panels?

The short answer is that batteries are way more complex under the hood.

Solar panels have one job: turn sunlight into electricity. They do it quietly, passively, and reliably. Batteries have a much trickier assignment. They store energy, manage when to charge and discharge, keep themselves at safe temperatures, communicate with your utility, and do all of these thousands of cycles without breaking a sweat.

The lithium-ion battery cells have to handle high voltage daily while staying safe in your garage or basement. That requires sophisticated battery management systems, thermal controls, and safety mechanisms that simply don't exist in solar panels. It's the difference between a calculator and a smartphone. Both are useful, but one does a whole lot more.

Then there's installation complexity. Adding solar panels rarely requires major electrical upgrades beyond a new breaker. Installing batteries can sometimes require upgrading your main electrical panel, rewiring parts of your home to isolate critical loads, and passing rigorous utility inspections. Each of those steps takes time and specialized expertise.

The inverter equipment system must also be properly configured to handle both solar battery storage and grid interactions efficiently.

What you get in return makes it worthwhile: backup power when storms knock out the grid, the ability to dodge expensive peak electricity rates, and sometimes even earning credits by sharing a bit of your stored energy with the utility during heat waves. Panels alone just can't deliver that kind of flexibility.

5 biggest price movers for solar battery systems 

Not all solar battery quotes are created equal. If you see a price variance of a few thousand dollars between options, it usually comes down to five specific factors. 

Understanding these factors that influence solar battery costs allows you to prioritize what matters for your home and select the right battery for your needs.

1. Solar battery chemistry & brand

The chemistry inside solar batteries matters immensely. Lithium-ion batteries, specifically lithium iron phosphate (LFP) chemistry, tend to last longer and tolerate heat better than traditional acid batteries.⁴ 

Expect to pay a premium for top-tier solar batteries that come with robust software, manufacturer warranties, and reliable technology that delivers superior performance over thousands of cycles.

2. Choosing the right solar battery capacity

Finding the right battery size doesn’t have to be complicated. It’s simply about matching your storage to how you use energy at home and what you want to keep running during an outage.

While it’s possible to choose too much or too little capacity, most homeowners don’t have to figure this out on their own. Working with an experienced solar and storage provider like Sunrun helps take the guesswork out of the process. They’ll assess your energy usage, home setup, and backup goals to recommend a system that fits your needs without over- or under-sizing.

3. Labor & installation complexity

Labor is the variable that some automated online quotes often miss, significantly impacting solar battery installations and the final total cost. A straightforward installation on a new build might take one day, but existing homes can throw curveballs. 

Common variables  include main-panel upgrades if your current electrical panel is old or full, or sub-panel rewiring to isolate critical loads like the fridge and Wi-Fi, and other essential appliances, making the project more expensive. 

4. Add-ons: Smart switches & EV integration

Want your system to be "set it and forget it"? Automatic transfer switches, which seamlessly disconnect you from the grid during a power outage, add cost but deliver immense convenience. 

Integrating an electric vehicle (EV) charger is another popular add-on. It allows you to top off your car with sunshine from your solar panel system, effectively turning your driveway into a private gas station while reducing your carbon footprint and eliminating the need for a noisy gas generator. 

5. Financial incentives & utility programs

In some areas, financial incentives and utility programs can help offset the cost of adding battery storage. Depending on your utility and where you live, there may be programs designed to support grid reliability or encourage energy storage adoption.

Availability and value can vary widely, and not all homeowners will qualify. That’s why it’s helpful to explore what’s offered locally and understand how it may apply to your situation before making a decision.

How do payment options impact what you pay?

The way you pay for solar and battery storage can make a big difference in your upfront costs and overall experience.

While purchasing a system outright means paying the full cost upfront, many homeowners today choose more flexible options like solar leases or subscription-style plans. These options can allow you to get solar plus battery storage installed with little to no upfront cost, and instead pay a predictable monthly rate over time.

With a subscription model, you’re not responsible for managing system performance or unexpected maintenance costs. Instead, your provider typically handles monitoring, repairs, and performance guarantees, which can make it easier to adopt solar and storage without added complexity.

Depending on where you live, there may also be local utility programs or regional incentives that support battery adoption or grid participation. These vary by location and may be structured differently than traditional rebates, so it’s worth exploring what’s available in your area.

Ultimately, solar batteries aren’t just an upfront purchase decision. They’re part of a broader energy strategy that can help provide more predictable energy costs and added resilience during outages—especially when paired with the right payment approach for your household.

State and local incentives

Many states offer incentive programs. For example, solar solutions for California residents can qualify for the Self-Generation Incentive Program (SGIP), which offers significant rebates that further reduce solar battery cost.

Time-of-use rate 

Another financial benefit comes from time-of-use (TOU) rate arbitrage. Many utilities charge higher rates during peak demand hours, when appliances and other household equipment are running, and overall energy demand is at its highest.

Battery storage allows you to use this structure to your advantage. Your battery charges with excess solar production during low-rate periods (typically mid-day when the sun is strongest), then powers your home during expensive evening peak hours. 

You avoid purchasing electricity when rates are highest, effectively buying low and selling high with your own energy. Over time, with proper maintenance and thousands of charge-discharge cycles, these benefits add up substantially and improve your system's overall return on investment, proving it's a good investment.

Can I add solar batteries to an existing solar panel system?

Yes, you often have the option to add solar batteries to many existing solar systems, though eligibility depends on factors like your location, system configuration, and contract terms.

Retrofitting an old system may involve voiding original warranties or replacing incompatible inverters. If you are one of our 1 million+ existing customers, ask about upgrade pathways designed specifically for you. 

Exploring battery options and solar battery storage with your original installer is usually the safest route to ensure compatibility and avoid maintenance issues down the road.

What are the best solar battery storage solutions?

Choosing the right solar battery type in today's market depends on your energy needs, home size, and backup power goals during power outages. Here are some of the top residential options:

Tesla Powerwall

The industry-leading Tesla Powerwall offers reliable backup power and intelligent energy management for your home.

• 13.5 kWh storage capacity 

• Automatically detects grid outages 

• Multiple units can be stacked together for increased energy storage

• Mobile app allows real-time monitoring and control of energy usage

• Requires minimal maintenance with an industry-leading cycle rating

FranklinWH Home Battery

The FranklinWH Home Battery provides extended power capacity with seamless solar integration to keep your home and critical appliances running during prolonged power outages.

• 15 kWh storage capacity powers devices longer than standard batteries

• Automatically disconnects from the grid during outages and restores power

• Solar panels continue recharging the battery during extended outages

• 10 kW output power with Virtual Power Plant program compatibility

Lunar Home Battery

The Lunar Home Battery delivers exceptional capacity with smart optimization technology for energy efficiency, making it a cost-effective solution that reduces your carbon footprint.

• 20 kWh storage capacity 

• Automatically optimizes power flows based on utility rates and grid status

• Award-winning design recognized with iF International Design Awards

• 9.6 kW continuous output with 15 kW peak power for extended backup

• Built for thousands of cycles with low maintenance requirements

Next steps for solar battery installation

Curious how a solar battery can help you achieve energy independence while reducing reliance on traditional utilities and eliminating the need for a gas generator? Contact Sunrun today. We handle everything, from system design and permits to solar battery installations and 25-year monitoring, so you don't have to worry.

Whether you’re exploring a solar purchase or a Sunrun subscription plan, getting started with solar and storage is easier than ever. Take the first step with a quick quote or consultation to see which battery solution works best for your home.