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Of course, how many Powerwalls you buy will determine your final cost. You can add up to 10 Powerwalls to your solar system, but Tesla recommends most homeowners install between two and four units to have enough stored energy during an outage. If you want to go completely off-grid, you may want to consider even more.
You can add a Powerwall (or several) to your Tesla solar roof or any solar panel installation. As you can see in the chart below, the cost of each unit decreases when you purchase more tesla powerwall. The quote you will get for your average cost of a Tesla Powerwall is inclusive of installation pricing. The following prices include installation costs through Tesla and do not reflect solar incentives.
The cost of equipment, labor and installation qualify for solar incentives like the federal tax credit, which can significantly lower your final price. You can get an individualized estimate for your Powerwall when you request a solar installation on the Tesla website.
The Tesla Powerwall is a home battery you can connect to your solar panels to store energy. This highly popular energy storage solution can keep your home running during power outages and allows you to use your own solar energy at night.
Tesla produces two types of solar batteries: the Powerwall 2 and the Powerwall+. The main difference is that the Tesla Powerwall+ is both a solar battery and a solar inverter, whereas the Tesla Powerwall 2 is just a battery. A solar inverter is a necessary solar system component that helps generate usable energy from your panels, so which model Powerwall you need will depend on whether you already have an inverter.
All Tesla Powerwalls come with a 10-year manufacturer warranty, the industry standard for solar batteries. This warranty has no cycle limit, so it is still valid no matter how many times the battery is charged and discharged.
However, the lifespan of a Tesla Powerwall is between 20 and 25 years. Tesla Powerwall Batteries also have a 70% end-of-warranty capacity guarantee, so even after your 10-year warranty ends, your battery will maintain 70% of its capacity.
Connecting your Tesla Powerwall to your solar energy system (or another renewable system) qualifies for the 30% federal solar tax credit and most other state and local incentives for solar equipment. Your local Tesla Certified Installer can help you apply for solar rebates and incentives in your area.
We closely evaluate solar installation companies with a focus on the factors most important to homeowners like you. We based our solar company methodology on input from multiple homeowner surveys, discussions with industry experts and research into the renewable energy market. Our review process involves assessing each company on the following criteria, which we then use to calculate a rating out of 5 stars. Cost and payment options (20 points): Cost is one of the most important factors when installing a solar energy system. Solar providers that offer cash purchases and in-house loan financing earn full points in this category. Companies also receive bonus points for offering solar panel leasing or power purchase agreements (PPAs). Services (20 points): In addition to solar installations, companies offering backup battery and electric vehicle charger installations, energy efficiency audits and system monitoring earn the most points in this category. Companies can also receive points for completing installations in-house, as opposed to using third-party contractors. Reputation (20 points): To assess the reputation of each company, we consider Google star ratings, Better Business Bureau (BBB) scores and reviews, and NABCEP certification status. We also look at customer complaint rates on sites like the BBB and weigh how the company responds. Warranty (15 points): We verify that each company offers workmanship, product and performance warranties on all of its solar installs. A provider earns more points for extending warranties that meet or exceed industry standards, including 10 years for system workmanship and products and 25 years for panel performance. Customer Support (10 points): Solar companies that offer virtual consultations, a mobile app, 24/7 customer support and high customer satisfaction with backend support earn the most points in this category. Industry Experience (10 points): Providers with 10 or more years of experience in the solar installation industry earn a perfect score in this category. Sustainability (5 points):To measure sustainability, we assess each company based on whether it shares a detailed sustainability statement or ESG disclosures on its website. We also conduct research to see if companies offer end-of-life panel disposal programs or have eco-friendly community partnerships.
As subject matter experts, we provide only objective information. We design every article to provide you with deeply-researched, factual, useful information so that you can make informed home electrification and financial decisions. We have:
We won't charge you anything to get quotes through our marketplace. Instead, installers and other service providers pay us a small fee to participate after we vet them for reliability and suitability. To learn more, read about how we make money and our Editorial Guidelines.
The Tesla Solar Roof is a building-integrated photovoltaic (BIPV) product that combines the functionality of solar panels with roof shingles. While Tesla is primarily known for their electric vehicles (EVs), the company entered the solar space when CEO Elon Musk led an acquisition of SolarCity in 2016. The glass solar and steel roofing tiles offer what Tesla notes as an unmatched aesthetic design to provide another option when considering solar energy to power your home.
Tesla isn't the only company to offer solar roof tiles. Other solar shingle companies include Certainteed Solar, GAF Energy, Hanergy, SunTegra, and LUMA Solar (see the EnergySage Solar Shingles Buyer's Guide for more). A Tesla Solar Roof installation is a premium option and will cost as much as 75 percent above the price of a typical solar panel system. Here's how it ranks in production, efficiency, and cost compared to regular solar panels and other shingle options.
Note: this pricing was confirmed in early 2022, and the total cost listed may vary based on your location. Pre-incentive pricing is shown above, but a 30 percent federal tax credit is available, and you may also qualify for additional local or state tax incentives or rebates.
When considering various solar equipment, you'll also want to consider product warranty, durability, ratings, reviews, and the solar company's reputation and track record. It's also important to remember that, like with other solar panel installations, you'll qualify for a federal tax credit called the solar investment tax credit (ITC) when installing Tesla solar shingles. So you can claim 30 percent of your Tesla Solar Roof installation costs on your taxes.
One important factor is efficiency when comparing installing new solar panels and a new Tesla Solar Roof. Tesla has not released data on the efficiency of its solar shingles. Based on our research, EnergySage estimates typical solar shingle brands range from 15 to 22 percent efficiency, whereas most premium solar panels offer 20 to 23 percent efficiency. It's important to remember this when deciding if the Tesla Solar Roof is worth it because your overall return on investment (ROI) will likely be lower with a Tesla Solar Roof than if you install new solar panels.
Every solar system, including a Tesla Solar Roof, needs at least one solar inverter to convert generated direct current electricity into usable alternating current electricity. A Tesla Solar Inverter has two size options: 3.8 kilowatts (kW) and 7.6 kW. It includes safety features such as integrated rapid shutdown, arc fault protection, ground fault protection, and no neutral wires.
As of December 2022, a single Tesla Powerwall home battery costs about $10,600 to $12,850 (plus about $4,000 more for the installation). While not explicitly required, a Tesla Powerwall is bundled with all Tesla Energy systems, including a Solar Roof. Tesla Powerwalls are energy storage systems that enable you to store the renewable energy generated by your solar energy system when the sun isn't shining or during a power outage.
However, Tesla customers have repeatedly raised concerns with the estimation process. As early as June 2020, Tesla started canceling Solar Roof orders after some customers were on the waiting list for a couple of years. Then, in April 2021, Tesla confused and frustrated many of their customers when they sent emails with increased prices to customers that had already signed contracts based on their initial quotes.
While the company blamed these price hikes on underestimated roof complexity, Tesla has yet to explain where their calculations faltered (though in September 2021, they announced that they'd be honoring the prices for the signed contracts). In 2022, Tesla announced they would not schedule more installations in new markets, adding a roof complexity disclaimer to their online Solar Roof calculator. As previously described, beginning in November 2022, Eletrek reported that Tesla started canceling additional solar projects, including Solar Roofs and solar panel projects that included some already permitted systems.
Like most high-quality solar panels, Tesla Solar Roofs have a 25-year warranty, including material defects and wind or rain damage. Separately, the shingles' have an impressive power output warranty that guarantees you maintain at least 95 percent of the "Rated Peak Power" specified on the Solar Roof data sheet. For comparison, the best solar panel warranties typically only guarantee 92 percent of initial output by year 25.
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