Best Solar Companies of September 2024

Why Palmetto Solar is CNET’s best overall solar company

Palmetto Solar continues to hold the top spot on CNET’s best solar company list. Our staff of editors and writers have extensively reviewed and evaluated 17 solar companies to date, and Palmetto continues to stand out for several reasons. Palmetto has a well-documented history of quality customer service and a suite of quality products, including a wide range of solar panels and solar batteries. While it’s true that many of solar companies offer quality equipment and good customer communication, Palmetto also stands above its competitors with price transparency and robust customer service plans. In an industry that can often be hard to navigate, Palmetto’s transparency is valuable for prospective solar buyers.

Palmetto operates in 25 states, including many of the most populous ones, making it accessible to most of the US. But if Palmetto isn’t available or doesn’t offer you the best deal, we’ve reviewed and ranked other solar installers highly, too, including some installers that work in all 50 states. You can find the whole host of solar companies reviewed by CNET experts below.

The best solar companies of 2024

This best list covers national and notable installers of (mostly) rooftop solar panels. Some of our picks might provide commercial installation services, but every company we’ve chosen for this list has been selected based on their service regarding residential installations. That means CNET is only evaluating these companies based on their installations on homes just like yours. Our selections are subject to change as we review more companies or as companies change their offerings. 

CNET experts have written or edited each of the reviews this best list draws from and developed a special in-house scoring methodology. Throughout this process, our writers have spent hours reading equipment spec sheets, looking at national trends, following solar company news releases, investigating customer reviews, interviewing industry experts and speaking with representatives from many of these companies to rank them on the criteria that matters to you.

These companies were rated on the variety and quality of equipment and products they offered, their stated warranties and apparent commitments to customer service. (Customer service is difficult to pin down, making up a smaller portion of a company’s total score, even though we recognize that it’s a significant part of the purchasing process.)

Besides our top pick, Palmetto, several other companies ranked above the competition. They all offer solid equipment but stand out in specific ways: Tesla for lower prices, and Momentum for its in-house installers. NRG Clean Power and Renu Energy Solutions stood out as exceptional installers in more localized regions as well.

Best regional or local solar companies of 2024

The companies on this breakout list may have scored higher than the companies on the national best list. But since they operate in only a few states and are not as accessible as the national providers, we chose to give them a best regional or local callout here.

Compare the best solar companies of 2024

This table compares how companies rate against one another by some (but not all) of the criteria we use to judge them. To get the full picture, click the company name to visit their review.

Other solar companies we reviewed

Our experts reviewed other solar companies that don’t appear in our best list above. Given the nature of the solar panel industry, which shifts from state to state and roof to roof, some of these other companies we reviewed might still be a good option for your situation.

Blue Raven

Blue Raven installs a variety of panels alongside SunVault batteries using all in-house installation teams. Like many other solar installers, Blue Raven could offer a price match guarantee and greater price transparency but gets strong marks for customer service. Blue Raven performs installations in 18 states, which makes the company a national operation in its own right.

In August, SunPower announced plans to sell Blue Raven and all of its assets to Complete Solaria as part of its bankruptcy proceedings.

Primitive Power

Operating on a brokerage model, Primitive Power goes between the customer and installer, promising to offer better prices through a competitive bidding model. Because the business model doesn’t fit our review scoring methodology, Primitive doesn’t get a score from us, but could be a good place to get multiple quotes all at once.

Qcells

Qcells is more of a solar panel manufacturer than a solar panel installer, but representatives for the company will connect you with installers that works with Qcells’ products. The company doesn’t offer the same guarantees or policies most of the installers on this list have, so it doesn’t get a score. If you’re interested in its high-quality, American-made panels, we have a write up with all of the details here.

Smartflower

Smartflower looks like a solar sunflower and might be a beautiful way to install solar panels, but unless you’re trying to advertise your green commitments or find a statement piece for your yard, it’s likely too much money for too little solar.

Sunnova 

Sunnova recently gained loan guarantees from the US government to help low- and moderate-income families adopt solar. If you have less-than-stellar credit, Sunnova might be a good option for you. It’s best to compare quotes, though. It installs a wide variety of batteries and offers some strong warranties. We found in our reporting a history of customer service issues and appears to have lost its Better Business Bureau accreditation — an issue the company told CNET it was working to rectify.

Sunrun

The largest solar company in America, Sunrun offers quality panels, a choice of a couple of batteries and quality inverters. It also offers strong warranties. Most of its business is in solar leases or power purchase agreements. But it is important to note that Sunrun provides stronger warranties for power purchase agreements than purchases.

Tesla

Tesla’s Solar Roof is an exciting way to imagine solar. It’s sleek, it’s low profile, but it’s very expensive. Depending on the size of your roof and your location, it can be several times more expensive than solar panels. 

Trinity Solar

For a while, Trinity Solar was CNET’s top company for customer service and still receives top marks. It also offers quality equipment and warranties, although some of its warranties, like its workmanship warranty, are a bit weaker than other companies.

WindMar Solar and Roofing

WindMar Solar and Roofing is one of the longest-tenured solar installers operating in Puerto Rico and Florida. It installs quality equipment, although customers who finance their system through a loan or enter a lease receive stronger warranties than those who purchase outright.

Solar industry trends: Why go solar now?

If you’re planning to buy solar panels to avoid rising energy costs and blackouts or to switch to renewable energy, you’re not alone.

New federal tax incentives have led to massive nationwide growth in solar installations. The country’s largest residential solar market, California, took a massive hit, however, with installation numbers dropping off. The reason: California’s new net metering policy, called NEM 3.0, has seriously hurt net metering incentives in the state, making it take longer to recoup the money initially invested in a solar panel system. Paired with high interest rates that make it harder for people to finance solar systems, it’s led to 17,000 layoffs in the state, according to the California Solar and Storage Association.

Some solar businesses are closing up shop altogether. That includes CNET’s previous highest rated solar company, ADT Solar, which closed its solar business in January 2024.

You can get 30% of the cost of solar panels back on your taxes and participate in local incentives and net metering (where available). The Inflation Reduction Act, passed in 2022, opened up more rebates for energy-efficient home improvements, electric appliances and other renewable energy solutions, which could help you save even more with solar panels.

Improvements in solar panel technology and manufacturing have also brought the prices of solar panels down significantly from where they were a decade ago, and industry experts say that trend should continue. Coupled with newly expanded tax credits, solar panels have never been more affordable.

Climate change is expected to continue fueling severe weather events that can cause more power outages. Solar panels paired with a backup battery can keep your home powered.

Solar panels can be a costly investment. And since few people can build their own solar panels, you’ll need to carefully research which installer is best for you.

Factors to consider when choosing a solar installer

Choosing a solar installer is like choosing a contractor for any home improvement project. You have to make sure to ask a lot of questions and compare multiple quotes. Your final decision will likely be based on which gives you the best price and which company gives you the most confidence. CNET outlines some expert tips on choosing a solar installer that’ll make your life easier, though.

• Get multiple quotes and compare: This is the single most important step. You can’t know if you’re getting ripped off without checking a quote against something else. To get a sense of the price variety, compare at least three quotes to five quotes from various local installers.
• Understand your local incentives: Make sure you know whether your local government and utility have solar-friendly policies that can make solar a safer financial bet.
• Read reviews and complaints: Online reviews aren’t the only valid source of truth, but they’re useful for educating yourself on the issues that might crop up and common experiences that customers have had with a company. Google and Yelp reviews are a couple of good places to start reading customer reviews, and you certainly can’t go wrong with referencing the Better Business Bureau.
• Talk to your neighbors who have solar panels: Ask your neighbor(s) how well their chosen company communicated, stuck to the schedule, navigated the permitting process and supported them after installation. If the company has a referral program, you could kick a few hundred dollars your neighbor’s way, too.
• Check licenses and certifications: You can check the North American Board of Certified Energy Practitioners for certified installers near you. There are other certifying organizations, so ask installers where their licensure comes from.
• Ask your installer questions: A reputable installer shouldn’t be afraid of questions. If you feel you’re getting the run-around, ask other installers the same and compare their answers. Your installer should be able to answer all your questions, even the difficult ones. Make sure to ask your installer about project deadlines and how financing works for your particular situation.
• Calculate your savings: If a company seems to be promising too much, it might be less than honest. Solar panels can save you a lot of money in the long term, but not in all situations. Find out how to calculate your expected savings with solar panels. If your calculation comes in much lower or higher than a salesperson’s, ask about it. 

What to expect: How does a solar panel installation work?

The process of getting solar panels looks a little different from company to company, but the broad strokes are the same.

After initial contact with the company, someone should visit your home for an inspection. While parts of the design and quoting process might involve looking at satellite imagery, having a professional actually visit your house allows them to take into account trees that might have grown or any other obstacles that shade your rooftop that might not be accounted for in the aerial images. They’ll also be able to assess the health of your roof and whether it needs to be replaced or not and identify any other barriers to going solar.

Some solar installers are adopting AI tools into their solar planning process. It’s yet to be determined AI’s impact on the industry, but experts believe AI use in the solar space will help keep costs down and speed up installation timelines.

The system will be designed, sized, approved by you and permitted. After the company receives permits from the necessary authorities, your installation will be scheduled. Installation typically takes a few days or up to a week, depending on the weather.

Installation for most solar panel systems requires drilling holes through your roof and into the joists that support it. This is necessary to keep your solar panels securely attached, but you’ll want to ask your solar installer how long it guarantees those penetrations will remain watertight to keep your home secure.

Installation will also require new wiring to be installed. Sometimes that means new conduit being attached to the outside of your house. Through our reporting we learned some companies will install it in your attic for free or for an additional charge.

Unless your system is off the grid, you’ll need to get permission to operate grid-tied solar panels from your utility. Once you’ve received permission, you’ll transition to generating energy, monitoring your array’s performance and maintaining your solar panels to keep them up and running during your system’s lifespan. Your new solar panels should last decades, especially if you are locked into a contract with a decent warranty.

While the timeline will vary, it usually takes several months to design, permit, install and switch on residential solar arrays. When shopping around, it’s best to ask what the estimated timeline is.

How much do solar panels cost?

The average cost for a residential solar installation is $2.99 per watt, according to an analysis by Wood Mackenzie. According to those figures, an average 8-kilowatt solar panel system would cost about $23,920. The cost of solar panels varies by location and the local cost for permitting, inspection fees, labor and more. It also depends heavily on what kind of solar panel system you get and whether you buy a battery to enhance the performance of your solar array. Batteries will add significantly to your price tag, costing around $10,000 or more.

While around $3 per watt is a decent ballpark estimate, the different sources that report solar prices vary in their results. That’s because they get their data in different ways. For example, in the chart below, EnergySage draws its information from quotes provided in its own solar marketplace while Wood Mackenzie’s uses wholesale prices of equipment and interviews with industry figures.

Average national cost of solar panels

*The above estimates are for different periods of time. EnergySage covers the second half of 2023. Wood Mackenzie is for the fourth quarter of 2023. Lawrence Berkeley Lab is for 2022.

The map below pulls data from FindEnergy.com to give the average total cash price, cost per watt and average solar panel system size in states across the country. These prices are representative of your costs before federal, state or local incentives. States in gray lack sufficient data pricing data on FindEnergy.

Solar panel incentives and rebates

There are plenty of incentives to reduce the cost of solar panels or your tax bill. The Inflation Reduction Act increased the federal tax credit for solar panels to 30% and made it available for 10 years. Other local tax exemptions or incentives could be possible, too. If your utility has a net metering program, you could receive credits on your utility bill that will help you save money. Other potential state incentives include property tax exemptions, sales tax exemptions, SREC markets or state tax credits.

CNET took a look at the incentives offered by every state and graded each on its solar-friendliness. New Jersey came out on top as the only state to receive an A, while 27 states scored an F. See how your state scored on the map below.

How much can I save by going solar?

The answer depends on your own personal energy usage, the solar panel system you choose, and a variety of other factors, such as net metering policies.

There are a few things you can calculate to help you find out how much you can save. The first is your payback period, in which you calculate the cost of installing solar panels after tax credits and incentives and divide that by how much money in energy costs you expect to save each year.

That will give you a period, in years, after which your solar panels will have paid for themselves in savings. Your solar panel payback period can vary widely. But after you hit that date, any energy you generate is money saved.

It’s also entirely possible that solar panels might not save you money but offset only partial costs of your energy bill. Solar savings can depend on factors such as how efficient your panels are, how much sun your panels get, how many panels you have, your electric rates, your state’s net metering policy, and your electric consumption.

If you want to go solar but either can’t afford the upfront cost of a solar array or you rent your property, community solar might also be a viable option.

Read more: Want something smaller than a whole-home solar system? See our picks for the best portable solar panels and solar generators.

What other solar equipment goes into a solar system?

While the panels are the most visible and well-known component of a solar array, there are other pieces of equipment you’ll need to know — some are necessary parts of your solar panel system, while others are optional equipment that could help you save even more money.

Solar panels

Nearly 100% of the residential solar panels installed today are monocrystalline, according to the Lawrence Berkeley National Laboratory (PDF). Polycrystalline panels are still installed but at a far lower rate than monocrystalline panels. They’re cheaper but less efficient, but the odds are that polycrystalline panels likely won’t be a concern for you.

Solar inverters

Solar panels produce electricity in direct current. Our houses and all the appliances within them use alternating current. We need some way to convert the electricity from DC to AC for use in our houses: that’s where the solar inverter comes in.

There are two main types of inverters in use: string inverters and microinverters. String inverters transform the electricity from a group (or string) of solar panels, all at once. This means you only need one per residential array, typically, but the entire array is affected by the lowest-performing panel. If one of your panels is shaded or damaged, it can significantly reduce the output of the rest of the array. String inverters are typically cheaper to install but come with shorter warranties.

You can find CNET’s pick for best solar inverters here.

Microinverters are the much more common solar inverters in use today. They operate on the panel level, which means if one is shaded, the rest can keep producing at full capacity. Because they are installed on the roof with the panel, they’re typically a little harder to service but ensure that your solar panel system produces a more reliable amount of energy. Microinverters cost a bit more to install but often come with 25-year warranties.

String inverters can also be installed with power optimizers, which perform a similar role to microinverters. The energy is still translated to alternating current at the central string inverter, but the power optimizer lets panels work independently of each other.

Solar backup battery

Backup batteries are becoming a more popular addition to solar arrays. Utility time-of-use rates (where electricity is typically cheaper when solar panels are producing ample amounts of energy for your households and more expensive during less productive hours) make batteries a more financially feasible choice for many. Solar panels won’t generate electricity during a blackout unless they have a battery that allows them to temporarily go off the grid, a process called islanding.

Backup batteries don’t always make financial sense, so make sure you understand whether or not it does for you before diving in. If you’re hoping to have power during a blackout, the financial calculation may be less important to you.

You can find CNET’s pick of the best solar batteries here.

How to pay for solar panels

Solar panels come with a hefty price tag, so just like other major purchases, a few financing options have become commonplace.

Paying for solar panels with cash

Paying with cash is the most straightforward and fee-free way to pay for solar panels. You won’t pay interest or loan fees and you’ll lock in the 30% federal tax credit. The obvious downside is that you’ll need to drop a huge chunk of cash all at once, which not everyone can do.

Paying for solar panels with a solar loan

Most solar companies offer financing options, including third-party or in-house loans. If you purchase solar with a loan, you’ll get the federal tax credit, too. Loans of any sort come with interest and fees and it pays to compare fees and interest rates. You can also pay with a loan you bring from elsewhere, like a personal loan from your bank.

Paying for solar panels with a home equity loan

Home equity loans or home equity lines of credit let you borrow money against the value of your house. This can secure you a lower interest rate but introduces some other risks. If you default on a home equity loan, your home can be foreclosed on. Since you’re still purchasing your solar panels, you’ll qualify for the federal tax credit.

Getting a solar power purchase agreement or solar lease

If you see ads touting homeowners going solar with zero money down, they’re probably for solar power purchase agreements and leases. But what is a PPA? It’s the less familiar cousin of a lease.

With a lease or PPA, you don’t actually own the solar panels on your roof. Instead, you agree to pay a monthly fee for the equipment (a solar lease) or to buy the electricity the solar panels produce (a PPA). This means you can go solar without a hefty price tag (and often zero money up front). It’s common for these rates to increase each year, so pay careful attention. If the escalation rate is too high, you may end up saving less money than expected over the lifetime of the deal. Since you don’t own the panels with these agreements, you won’t be eligible for the federal tax credit.

How we evaluate solar companies

Reviewing solar companies in a hands-on way is tough. Each project is as unique as the house it goes on and the family that will use its electricity. To evaluate these solar installers in a meaningful way, we had to focus on what we could measure and what would be useful to you.

We rate companies on three categories of criteria: equipment, warranties and service.

In the equipment bucket, companies get scored on the panels, inverters and batteries they install. Warranties include the guarantees on the panels (which typically come from the manufacturer), workmanship and weatherization against leaks. Companies gain points for service for offering a price match, a meaningful level of price transparency and a well-rated app for monitoring solar production. They lose points for major customer service issues (lawsuits, investigations or obvious reputations for shoddy service). We’ll always detail these in the review.

You can read a detailed look at how the scoring breaks down here.

We don’t consider a company’s average price of installations in its score. Average prices are hard to find and compare place to place (or even roof to roof), and companies are often slow to disclose them. We also leave out information that’s easy to find but not useful to you, like how many states a company operates in.

Solar panel FAQ

Correction, Jan. 31, 2023: An earlier version of this article misstated the Better Business Bureau’s grading process. Any company can receive a grade from the Bureau, regardless of whether it has paid to go through the accreditation process.