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How Much Does a Tesla Powerwall Cost? (2024 Guide)

Tesla Powerwalls cost homeowners $11,500 with installation through Tesla. See what you should budget for and how to save money on your solar battery.

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Tesla powerwall against the side of a suburban home.

Author Image Written by Tamara Jude Updated 07/10/2024

We’ve analyzed the Tesla Powerwall’s costs, benefits, and key features and compared it to the other top-tier home solar battery brands. Our guide also explains the different Powerwall models to help you make the best choice for your solar system.

Key Takeaways

Purchasing a Powerwall from Tesla costs $9,300. Tesla installation adds an additional $1,100 but may not be available in your area. Third party Installation can add an additional $2,000-$3,000 depending on factors such as where you live.
Most homeowners only need one or two Powerwalls for energy storage, but some require three or more to fully go off-grid.
Tesla Powerwalls qualify for many solar incentives such as the federal solar tax credit, which amounts to 30% of the Tesla Powerwall’s cost.

*Certified installers vary by region—we always recommend requesting multiple quotes.

What Is the Tesla Powerwall?

The Tesla Powerwall is a lithium-ion battery that uses lithium nickel manganese cobalt oxide (NMC) chemistry. NMC batteries are the most common type of solar battery. They generally have a life span of 10–12 years and high energy capacity, meaning they can store a significant amount of energy despite being physically smaller than other battery types, making them a great addition to any renewable energy system.

The battery has gone through a few versions, including the Tesla Powerwall 2 and Powerwall+. The most recent version is the Powerwall 3, which became available in early 2024.

Modern house overlooking a lake with two Tesla Powerwalls on the side of the house.
Powerwall+ | Courtesy of Tesla, Inc.

Here’s a look at the Tesla Powerwall 3’s features and specs.

Backup power11.5 kW peak, 185 LRA motor start, seamless backup transition
Battery systemCompatible with all grid-tiered solar inverters
Battery typeLithium-ion, composed of lithium NMC oxide
Depth of discharge (DoD)100%
Energy capacity13.5 kWh
InstallationFloor or wall-mounted, indoor or outdoor
On-grid power11.5 kW continuous
Round-trip efficiency 97.5%
Temperature tolerance-4–122 degrees Fahrenheit
Warranty 10 years
Weight287 pounds 

Depth of discharge measures how much power you can draw from a battery before its recharging efficiency drops. The industry standard is between 80% and 100%. All Tesla Powerwall models have a 100% DoD, meaning you can charge to their full battery capacity every time.

Round-trip efficiency measures the amount of electricity that can be used after a full charge. According to the U.S. Energy Information Administration, the typical solar battery has a round-trip efficiency of 80%. The Tesla Powerwall offers an above-average round-trip efficiency of 90% or higher, making it an efficient storage solution.

What Are the Uses of the Tesla Powerwall?

Like most Solar batteries, Tesla Powerwalls allow you to power your home even when the sun isn’t shining. Each Powerwall stores the solar energy your solar power system absorbs for you to draw upon during outages or when the sun isn’t out. A Powerwall can power the essential appliances of an average-sized home for 24–36 hours, with more Powerwalls extending that duration. This prevents you from having to pull energy from your local power grid to power your home, which would result in an electric bill.

In areas with enough sun, Tesla Powerwalls can also be used to make a home self-sufficient so that it can go completely off-grid. You may want multiple Powerwalls in this scenario to ensure you always have plenty of backup power if you are aiming to achieve energy independence. Most homes will need multiple powerwalls to power the whole home instead of just essential appliances.

Tesla Powerwall systems also integrate with Lumin Smart Panels. This allows the Smart Panel to be aware of the Powerwall’s current charge. When the charge is low, the Smart Panel can prioritize power to the most important appliances as defined by the user.

How Much Does the Tesla Powerwall Cost?

A single Tesla Powerwall battery costs $9,300 according to Tesla’s website. Installation costs vary depending on your installer, but average between $2,000 and $3,000. The price of a Powerwall varies based on your location, however. Our cost is based on a quote our team got for a Chicago, Illinois street address. You can learn more about costs in your area by submitting your address on Tesla’s site.

You can purchase a Powerwall in combination with a Tesla solar system or solar roof.

This price of $9,300 for one Powerwall doesn’t include installation costs or taxes. You can purchase a maximum of 10 Powerwalls, and the price per unit decreases when you purchase more batteries. Most homes need only one or two batteries to meet their basic energy storage needs. For larger homes or for homeowners that want to go off-grid, additional Powerwalls may be necessary.

You can save thousands of dollars on your battery by applying for solar incentives. The federal solar tax credit is one of the most valuable incentives that most homeowners qualify for. We’ll cover this further in the article.

Number of PowerwallsAverage Cost*Cost After 30% Federal Tax Credit
*Costs via Tesla’s quote tool using a Chicago address. Costs do not include installation or taxes.

Pricing With Tesla Powerwall Direct

Previously, homeowners could only purchase the Powerwall along with a new Tesla solar system. However, Tesla announced in 2023 that its new Powerwall Direct service allows the purchase of stand-alone units in select U.S. markets.

Our team got a quote for Austin, Texas. We found that a single Powerwall starts at $9,200 in this area, which breaks down to the following costs:

  • $8,000 for the Powerwall
  • $1,000 for Gateway Wi-Fi equipment
  • $200 accessory fees

The equipment and accessory fees are flat for multiple stand-alone Powerwalls. You’ll only pay for the additional Powerwall unit. Adding two Powerwalls in Texas increased our cost to $16,000 plus $1,200 for the additional equipment, totaling $17,200, representing a savings of $600 dollars per Powerwall. We could see estimates for a maximum of three Powerwalls for $25,200. Our order included a $200 delivery fee.

  • $1,000 for Gateway Wi-Fi equipment
  • $200 accessory fees

Your order comes directly to your home, but you must contact a local Tesla Certified Installer to schedule the installation. Our quote included a link to local Tesla installers in the Austin area.

Number of PowerwallsPer-Unit CostTotal Cost With All Equipment and FeesCost After 30% Federal Tax Credit

Pricing From Local Installer

If you don’t want to purchase directly through Tesla, you can buy a Powerwall through a locally certified Powerwall installer. Consider this option if you’re simply looking for a new home battery storage solution to integrate into your existing solar panel system. A Powerwall’s total cost varies per installer and could range from $15,000–$18,000.

In addition to higher pricing, you’ll have a significantly longer wait time for your new Powerwall. Tesla prioritizes full solar system orders over individual battery orders. Placing an order through a third-party retailer will result in even longer delays since they have to get the products from Tesla first.

How To Save Money on the Tesla Powerwall

Federal, state, and local solar incentives can help you save thousands of dollars when buying solar products, including batteries. One of the most valuable cost-saving incentives is the federal solar tax credit, which you qualify for if you purchase a Powerwall as a stand-alone unit or with a full Tesla solar system using cash or a solar loan. This provides a federal income tax deduction equal to 30% of your solar panel installation costs.

You also save money when you buy more than one Powerwall. Each subsequent battery purchase comes at a discounted rate.

You may also qualify for additional state and local credits, rebates, and incentives that lower your solar panel and accessory costs. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) for more information about statewide and local incentives. Our 2024 survey of 1,000 solar users showed that 75% took advantage of solar incentives to increase their return on investment.

Pros and Cons of Tesla Powerwall Battery


Has above-average efficiency
Can be installed on an existing system
Comes with energy-monitoring app and software updates


Must be installed by a Tesla-certified professional
May have long wait times due to high demand
Comes in just one size

How Do the Powerwall 2, Powerwall 3, and Powerwall+ Compare?

The Powerwall 2, Powerwall 3, and the Powerwall+ models share most features, such as battery capacity, but their power output and installation options differ. See a side-by-side comparison of the Powerwall models below.

Key FactorPowerwall 2Powerwall+Powerwall 3
Energy capacity13.5 kWh13.5 kWh13.5 kWh
On-grid power5 kW continuous5 kW continuous11.5 kW continuous
Backup power7 kW9.6 kW11.5 kW
Depth of discharge (DoD)100%100%100%
Round-trip efficiency90%97.5%97.5%
Weight251.3 pounds343.9 pounds287 pounds
Warranty10 years10 years10 years

How Long Will a Tesla Powerwall Last?

Powerwall models come with an industry-standard 10-year warranty. Your Powerwall may last longer than 10 years, but its performance will lessen. Most solar panels last up to 25 years, so you may need to replace your Powerwall to match your system’s life span. 

The Powerwall warranty includes the following clauses:

  • 70% end-of-life capacity clause: The Powerwall has an end-of-cycle capacity of 70%, meaning it will provide at least 70% of its original 13.5 kWh capacity. This is higher than the average end-of-warranty capacity of around 60%.
  • Four-year workmanship warranty: This warranty covers any replacements or repairs due to poor installation and the shipping of any necessary replacement parts. 
  • Unlimited charge cycles: A charge cycle is the process of fully charging and draining your battery. This clause includes unlimited charge cycles for the full 10-year coverage length.
Modern house at nighttime with large windows. White Tesla Powerwall next to the back door.
Powerwall 3 | Courtesy of Tesla, Inc.

How Many Powerwalls Do You Need?

A Tesla Powerwall can power essential appliances in an average home for an average of 24–36 hours, but this is weather-dependent. Here is a detailed breakdown:

One Powerwall:

  • Cloudy/winter days: 1 day
  • Sunny/summer days: 2.5 days

Two Powerwalls:

  • Cloudy/winter days: 1.5 days
  • Sunny/summer days: 7+ days

The battery can provide electricity to most 120-volt appliances and electric outlets. High energy consumption systems, such as air conditioners, may require additional Powerwalls to meet their energy needs. 

The Powerwall can function as a whole-home or partial backup system based on your needs. Below is an overview of each configuration:

  • Whole-house backup: This configuration provides whole-home power during an outage. If you have several high-power appliances, your battery life will lessen more quickly. This setup is best for homeowners living in areas with inclement weather that causes blackouts. It’s also a good option for those who want backup power for their home and can afford multiple Powerwalls. Most homes need three or more Powerwalls for adequate whole-house power backup. 
  • Partial-home backup: With a partial backup option, your Powerwall only supplies power to essential appliances, such as your HVAC system and refrigerator, during an outage. Consider this configuration if you’re keeping your investment to a minimum and only focusing on essential appliances. This setup requires one or two Powerwalls.
We surveyed 1,000 solar users and found that 30% purchased two solar batteries to support their system, 25% purchased three, and 22% chose four. Less than 7% purchased just one.

How Does the Tesla Powerwall Compare to Other Solar Batteries?

Here’s how the latest Powerwall compares to other energy storage options based on features, capacity, and solar battery pricing.

MeasurementPowerwall 3sonnenCore+Enphase IQ 5PSunPower SunVault
Storage capacity13.5 kWh10 kWh–20 kWh4.96 kWh13 kWh–19.5kWh
Continuous power output11.5 kW4.8kW3.84 kW6.8 kW
Depth of Discharge (DoD)100%100%98%92%
Round-trip efficiency97.5%85.8%90%86%
Warranty10 years10 years or 10,000 cycles15 years10 years

Is the Tesla Powerwall Worth It?

The Powerwall is a good investment for home solar systems or homes with general backup energy storage needs. The Powerwall can be more expensive than other solar batteries, but it’s also more efficient and has a longer life span. Powerwalls offer a high power capacity, cost-saving operating modes, and customizable backup capabilities. Homeowners benefit from being less dependent on their utility’s power grid, protecting them from power outages and lowering their home energy bills. 

If you want to talk to a professional about how the Powerwall battery would benefit you and get a personalized quote, connect with one of our recommended solar panel companies.

FAQ About the Tesla Powerwall

Can I get a Free Powerwall?

Tesla is not offering free Powerwalls at this time. Tesla has offered free Powerwalls to customers in the past as part of a referral program, but this offer ended in 2021.

Is Tesla Powerwall weatherproof?

Yes, the Tesla Powerwall is weatherproof and can be installed in indoor or outdoor locations. The Powerwall operates in temperatures between -4 to over 122 degrees Fahrenheit. The energy storage device includes an integrated temperature regulation system to provide maximum performance in hot or cold conditions.

Do I need solar panels to use a Powerwall?

No, you don’t need solar panels to use a Powerwall. You can use the Powerwall to back up energy from the power grid for use during blackouts or to save on energy costs.

How many years will a Tesla Powerwall last?

A Tesla Powerwall is guaranteed under warranty to last 10 years at peak performance. You may be able to get as many as 20 years out of your Powerwall, but performance will decrease over time. 

How many solar panels does it take to charge a Tesla Powerwall?

There is no specific number of solar panels needed to charge a Tesla Powerwall. But for most use cases, around 20 solar panels will be sufficient.

Our Rating Methodology

We aim to provide comprehensive and unbiased reviews to our readers. This means earning your trust through transparent reviews and data to back up our recommendations. Our rating system for solar batteries is on a 100-point scale based on five factors:

  • Depth of Discharge (20 points): Does the company disclose its depth of discharge (DoD) rating? Does the DoD meet the industry standard of 80%? The higher the rating, the higher the score. 
  • Round-trip efficiency (20 points): How efficient is the battery? Does it meet or exceed the industry standard of 80%? The higher the round-trip efficiency, the more points we awarded.
  • Battery chemistry (15 points): We awarded more points to Lithium Iron Phosphate (LFP) batteries than Lithium Nickel Manganese Cobalt Oxide (NMC) batteries due to their higher efficiency and longer life span.
  • Battery options (15 points): We awarded more points to brands with multiple battery sizes for better customization, rather than only one size.
  • End-of-warranty capacity (15 points): How powerful will the battery be at the end of its warranty? Does the projected end-of-warranty capacity meet the industry standard of 60%? We awarded more points to batteries with higher end-of-warranty capacities.
  • Warranty length (15 points): How long is the battery’s warranty? Does it meet or exceed the standard 10-year warranty? Batteries with the longest, most comprehensive warranties ranked higher.

To share feedback or ask a question about this article, send a note to our Reviews team at reviews@thisoldhousereviews.com.