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Cost of Powerwall without solar panels: A standalone Tesla Powerwall in 2022 costs $11,050. (Find pricing for your address here.) The Powerwall can be used without a solar system to store extra energy from the grid for backup power.
Cost of Powerwall with solar panels: To find out how much your Tesla Powerwall may cost as part of a full home solar system, we looked at the average monthly electricity bill in the U.S., which is currently $133.24. Based on this monthly electricity bill, Tesla recommends a 7.2 kW solar panel system with one Powerwall battery, which equals $28,276 ($16,776 for panels and $11,500 for the Powerwall). Tesla offers an additional $2,700 discount when bundling a Powerwall with Tesla solar panels, bringing the cost down to $8,350. This total price is not counting state and federal tax incentives, which can bring the price down by 30% or more.
Cost of Powerwall with a solar roof: A Tesla solar roof is made up of solar and non-solar tiles that more closely resemble a traditional shingled roof. According to Tesla, “The typical homeowner can expect to pay $21.85 per square foot” for a solar roof.
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The size of your home and the number of appliances you are running will affect how long the Tesla Powerwall battery can maintain power in your home during a power outage. The Tesla Powerwall can store up to 13.5 kWh of backup power.
According to Tesla, “An average home uses approximately 25 kWh of energy per day. A small home may use as little as 10 kWh, and a large home may use 40 kWh or more per day.” Knowing your home’s energy consumption and using the Tesla app to prioritize and track your power usage can help prolong the Powerwall’s energy output.
Tesla Powerwall buying options
When you purchase your Tesla home solar panel system, you’ll be able to choose between two different Powerwall models: the Powerwall and the Powerwall+. According to Tesla.com, “A Powerwall+ contains additional features focusing on solar integration that enable cleaner installations with less equipment.” The main difference is the Powerwall+ has a solar inverter built into the model, requiring less individual equipment. You can combine up to 10 Powerwalls for additional solar energy storage, including a mix of the Powerwall and Powerwall+.
Is the Tesla Powerwall worth the cost?
Yes, the Tesla Powerwall is worth the cost if you are looking for a durable solar battery that can withstand indoor and outdoor conditions. The Powerwall is water-resistant, and dust-proof keeping it safe from rain and other elements. This battery can operate in up to 100% humidity and temperatures ranging from -4 degrees Fahrenheit to 122 degrees.
For example, customers were shocked at how well their Powerwall systems functioned during Hurricane Ian. The hurricane brought 155 mph winds and 10 feet of water to some areas in Florida. After being underwater for hours, the Powerwall continued to function as expected.
If your Powerwall is not working correctly, contact customer service through the Tesla mobile app, chat with an agent online, or other options listed on their site.
Is the Tesla Powerwall right for you?
Although it is not a prerequisite to owning a home solar panel system, a Tesla Powerwall may be right for you if:
You live in a high solar-producing state. Once your solar panels have generated enough energy to power your home, your solar battery allows you to store any extra electricity.
Your area experiences frequent power outages. If power outages are detrimental or dangerous to your lifestyle, a backup power source is a good solution.
You pay expensive Time-of-Use (TOU) electricity rates. Using stored energy from the Powerwall during peak times can reduce your energy bill.
Tesla Powerwall tax credits and incentives in 2022
The good news is there are a few ways to offset the cost of a Tesla Powerwall in 2022. One way to reduce your costs considerably is to claim the 30% Clean Energy Credit (formerly the federal solar tax credit, or ITC) that runs through 2032. This credit could save $3,450 on your taxes when you purchase an $11,500 Tesla Powerwall. The tax credit will decrease to 26% in 2033, then 22% in 2034.
Homeowners can apply the Clean Energy Credit to the entire home solar system, including solar panels, inverters, and batteries such as the Powerwall. The Clean Energy Credit is part of the Inflation Reduction Act passed on August 16, 2022, and applies retroactively to any qualified solar purchase from January 2022.
However, the tax credit is only applicable if you purchase or finance your system, but not if you lease your solar system or enter a solar power purchase agreement (PPA). Other state and local incentives may be available in your area as well. Another aspect that can help with the cost of a solar panel system is net metering, which is a process available in some states where you can sell excess energy back to the power grid.
Tesla Powerwall compared to other popular batteries
Key specs and features for the 2022 Tesla Powerwall
This capacity is above average for a solar battery, so you can store more energy than many of the Powerwall’s competitors.
Tesla promises that your battery will be free from defects and will maintain no less than 70% of its 13.5 kWh energy capacity. If there’s a problem, Tesla will either repair, replace, or refund your Powerwall. Read the full warranties for the Powerwall and Powerwall+.
Depth of Discharge (DoD)
The DoD of a solar battery refers to the amount of energy you can draw before impacting its lifespan. In most solar batteries, the DoD is less than 100%. The Powerwall has an impressive 100% DoD, meaning you can use the full amount of stored energy without shortening your battery’s lifespan.
Round trip efficiency
The round trip efficiency of a battery describes how efficiently it runs during one cycle. Round trip efficiency is a percentage that describes how much of the power in the battery you can draw versus how much is needed to run the battery. The average competitor solar battery efficiency is between 70–80%.
45.3” x 29.6” x 5.75”
Length by Width by Depth in inches
This weight is average for a solar battery.
Where to install
Floor or wall mount; indoor or outdoor
Many solar batteries are rated for indoor use only.
-4℉ to 122℉
The Tesla Powerwall can be stored outside (based on your area’s temperature compatibility).
A lithium-ion battery often has a longer DoD, longer lifespan, and lower maintenance. Other types of solar batteries on the market include lead-acid, lithium-ion, lithium-polymer, deep-cycle, saltwater, and solar gel.
Should you buy the Tesla Powerwall in 2022?
The Tesla Powerwall is one of the top solar batteries on the market, and it’s easy to see why. It has plenty of advantages over the average solar battery. But despite its advantages, the Powerwall also has some downsides. Let’s take a look at the Tesla solar battery’s pros and cons.
Long lifespan with a 10-year warranty
Powerwall+ not sold separately by Tesla
High efficiency (90%) and DoD (100%)
More expensive than other solar batteries
Can add up to 10 Powerwalls for additional energy storage
May not be compatible with existing solar panel system
When you’re deciding whether the Tesla Powerwall is right for you, there’s a lot to consider. The Tesla Powerwall can help you maintain power in your home regardless of power outages or winter weather. However, the Powerwall has a price tag of $11,500, and other solar batteries are available for less. But the most important factor is whether the Powerwall is compatible with your solar system.
Due to testing limitations, our team does not have firsthand experience with Tesla solar panels and batteries. However, the facts and reviews explained on SaveOnEnergy.com come from proprietary data, solar pricing from Berkeley Lab, and extensive research by our in-house team. We are confident in our product reviews and guidelines for our valued readers through analysis from these sources.