How Much Do Solar Batteries Cost?

Home solar battery costs breakdown

Home solar battery costs break down differently depending on the manufacturer. Budget-friendly brands can offer good value, while premium options often include features like smartphone apps or better compatibility with your existing solar system.

Solar battery costs by model

We researched costs for popular solar batteries and their installation to determine total installed costs.

Installation costs of solar batteries

Installation and labor can add several thousand dollars to the total cost of a solar battery system. Most homeowners pay anywhere from $4,000 to $12,000 for installation, depending on system complexity, permitting requirements, electrical upgrades and local labor rates. Costs are often lower when batteries are installed at the same time as solar panels.

Maintenance costs of solar batteries

Most modern, lithium-based storage systems have minimal or nonexistent maintenance costs. Solar battery terminals should still be routinely cleaned to get rid of buildup and debris, but lithium solar batteries incur less maintenance than traditional lead-acid devices.

Solar battery cost trends over time

Solar battery costs have been trending downward over time. In the past, adding a battery could double the price tag of your solar system. Today, prices have dropped due to advancements in technology and the increased production of batteries by more companies. Still, expect to pay anywhere from $11,000 to $18,000 with installation for a typical home battery storage system, though high-end batteries can cost $20,000 or more.

Cost of solar panels with vs. without solar batteries

The cost of solar panels without a solar battery is typically between $13,962 and $27,924 with installation. With a solar battery installation costing between $11,000 and $18,000, total solar system costs may range from around $25,000 to $46,000. Generally, the total cost depends on the age and design of your current solar system. Homeowners with older equipment may face higher retrofit costs than those with newer, battery-ready systems.

Many modern solar systems are designed to be battery-ready, which can simplify installation and reduce compatibility issues. Adding battery storage during a new solar installation is usually more cost-effective because the installer can complete all electrical work, permitting and equipment integration at the same time. Homeowners may also save on labor costs.

What affects solar battery costs?

Some of the factors that affect solar battery costs include solar battery capacity, system size, chemistry and installation complexity.

Capacity

Capacity is the maximum amount of electricity a battery can store. Stored energy is measured in kilowatt-hours (kWh) or amp-hours (Ah). Larger battery capacity typically results in higher costs, though the price per kilowatt-hour varies across different battery types and brands.

System size

The biggest factor affecting solar battery cost is the system’s size. Your total cost also depends on how many batteries you need. Some homes need just one battery, while others require two, four or more.

“Batteries with more power are more expensive,” said Steven Zook, founder of Rhino Voltz, a solar battery supplier. He also said you could power a house “with one battery if you had a big enough battery.”

Many systems also offer expandability, meaning you can start with one battery and add more later as your energy needs grow.

How many solar batteries do you need?

The number of solar batteries you need generally depends on the following:

• How much energy do you want to store?
• Which appliances and systems do you want to back up?
• How long do you need backup power to last?

Battery chemistry

Lead-acid batteries cost less upfront than lithium-ion batteries, though lithium-ion batteries are generally the industry standard for solar applications because they can discharge more of their stored energy, store more energy and operate more efficiently over their lifetime. 

In comparison, lithium iron phosphate batteries are the most expensive option, but they tend to last much longer than lithium-ion batteries and they can withstand higher and lower operating temperatures.

Installation and labor costs

Installation and labor costs can vary widely, especially if you’re in an area that doesn’t have many qualified contractors or companies for the job. In addition to installing the battery, labor costs may include electrical panel upgrades and making your solar system compatible with battery storage.

Other installation costs to consider are permit and inspection fees. Many cities and counties require permits and inspections before a solar battery system can be installed. Permit costs vary by location, but homeowners may pay anywhere from a few hundred dollars to more than $1,000, depending on local requirements.

How long does it take for a solar battery to pay for itself?

Solar batteries typically take five to 20 years to pay for themselves through energy savings. However, some homeowners may never fully recoup the upfront cost of a solar battery before it needs to be replaced. 

How quickly a solar battery pays for itself depends on:

• Electricity rates: If you live in an area with high electricity costs, you’ll typically see faster payback periods.
• Incentives and rebates: There may be state, local and utility incentives for solar batteries, which can help reduce upfront costs and shorten the payback period.
• Usage patterns: Payback periods tend to be shorter when homeowners frequently use their stored solar energy instead of relying on the grid. If you tend to use more electricity during peak pricing hours or have frequent outages, you’ll get more value from battery storage.

How to save money on solar batteries

To save money on solar batteries, it helps to look for potential tax credits or rebates, bundle your battery with other home energy upgrades and shop around to compare battery prices.

1. Take advantage of solar incentive programs

Take advantage of solar incentive programs through your state, city or utility company to reduce your costs. Solar batteries aren’t cheap, but incentives and smart planning can help lower upfront costs and maximize long-term value.

2. Bundle your solar battery purchase

Bundling a solar battery with solar panels can save you money. Handling the project through one installer is typically more affordable than piecing together equipment from separate companies over time.

A solar battery purchase is also a great time to consider other additions, such as smart energy controls, an electric vehicle (EV) charger or an electric panel upgrade. Many installers offer package deals on these combined projects.

3. Shop around and compare quotes

If you haven’t gone solar yet, or if your original installer is no longer in business, shop around and compare quotes from at least three local solar companies. Comparing at least three estimates helps you understand the market rate and find the best value for your specific needs.

What’s included in the price?

When comparing options, check what’s included in the price. Some batteries require additional equipment, such as an inverter or charge controller, which you may need to purchase separately.

If you already have solar panels and want to add a battery, start by contacting your original installer. It’s the most familiar with your system, and it can tell you whether you need equipment upgrades, like a battery-ready inverter, to add storage.

Pros and cons of solar batteries

Solar batteries are a big investment, so it’s still important to carefully weigh the pros and cons before buying.

Benefits of adding battery storage to solar panels

The two biggest advantages of adding a battery to your solar panel system are long-term savings and reliable backup power during grid outages.

Long-term savings

Solar batteries help you avoid high utility rates over time. When electricity costs peak (typically during hot afternoons or early evenings), you can power your home with stored solar energy instead of expensive grid electricity. Over time, this can add up to substantial savings.

Make money with net metering

In some states, you can sell excess solar electricity back to the grid during peak rate hours through net metering. This can help offset your battery costs over time.

For example, California’s NEM 3.0 program specifically encourages solar battery owners to take advantage of time-of-use rates by storing energy when rates are low and selling it back when rates are high. Check your local regulations to see if similar programs exist where you live.

Note to Texas homeowners

Net metering is available in Texas, but state law doesn’t require utility companies to offer it. As a result, many retail electricity providers don’t participate in net metering programs.

Backup electricity during grid outages

Many homeowners value the peace of mind that comes with backup power during grid outages. Without a battery, grid-tied solar panels automatically shut down during blackouts for safety reasons. This leaves you without power even though you have solar panels on your roof. A battery keeps your essential systems running during outages.

“If you don't go with the battery pack, it's a waste,” said Ted, a reviewer from Texas. “I did that and it gives me some time if the power goes out where I don't lose my groceries.”

FAQ

Are solar batteries worth it?

Solar batteries can be worth it for homeowners who want backup power, have high electricity rates or can’t benefit much from net metering. If your power is cheap, reliable and well-compensated through net metering, the financial return is often limited.

When solar storage is worth it

Solar storage may be worth it if you:

• Have high electricity costs. Batteries deliver the most savings on electricity bills in areas with expensive utility or time-of-use rates.
• Experience frequent power outages. If you live in an area that’s prone to blackouts, whether from storms, wildfires or an aging grid, a battery provides valuable backup power and peace of mind.
• Want energy independence. Batteries let you maximize your use of clean, self-generated solar power and reduce your reliance on the grid.
• Live in an area without net metering. If your utility doesn’t offer net metering or offers unfavorable rates for excess solar power, a battery helps you store and use more of the energy you generate.

When solar storage is not worth it

Solar storage may not be worth it if your:

• Electricity rates are low. In areas with inexpensive, stable electricity rates, it may take decades to recoup your battery investment through savings alone.
• Grid is highly reliable. If you rarely experience outages and backup battery power isn’t a priority, the cost may not justify the benefit.
• Net metering rates are favorable. If your utility offers good net metering rates, the grid can effectively serve as your battery for free.

Grid-tied vs. off-grid solar energy systems

Most U.S. homeowners connect their solar panels directly to the power grid without a battery. The grid essentially acts as a giant battery where excess power from your panels flows into the grid, and you’ll pull electricity from the grid when your panels aren't producing enough. Grid-tied systems are popular because they’re less expensive than buying batteries. However, it means you’ll lose power during grid outages unless you add solar battery storage.