The Best Solar Panels

Make the Sun Pay Your Electric Bill

The 30-Second Review

Solar panels are the best way to get your power for free. And while they're built to last for 25 years or more, it'll take some time to recoup your investment and not every manufacturer or installer will be around as long. An engineer and a solar expert confirmed our findings: The best panels have efficiency ratings that pack a powerful punch and come from manufacturers with a proven track record.

Top Picks
Best Overall

SolarWorld is the largest US manufacturer and a giant in the space. It's been producing panels for 40 years in both Germany and the United States and has nine panels that hit our benchmarks, including one with the highest efficiency rating out of all the panels we looked at.

  • July 7, 2017 — The producer of our top pick, SolarWorld, filed for insolvency on May 11, 2017. This doesn’t necessarily mean bankruptcy, but the possibility is looming. Our runner-up, Canadian Solar, is also facing significant financial difficulties, as is much of the industry. We’re planning a substantial update to this review to address these events, but in the meantime, we recommend Kyocera Solar’s products, as the company seems to be on the most stable footing of our picks.

Carbon footprints on your mind? An electric bill that just won’t quit? Solar energy is an increasingly popular antidote to both, but decking out a home with a solar array is going to sting a little: Between panels and soft costs like installation labor, mounting hardware, and electronic components, you can expect to shell out between $15,000 and $40,000. Yowch. Even if you receive a financial government incentive, it typically takes 15 to 25 years to break even. We’re officially in long-term investment territory.

The bulk of your investment is going to come from installation costs. And that $25,000 range of possibility comes from a number of unique features on your home. Angle, sun exposure, and lifetime of your roof all influence installation. Getting a personalized estimate for your home, from a few different installers, is the only way to know how much solar energy could cost you.

Once you’ve picked an installer, you’ll want to compare panel options. Good solar panels are powerful and efficient, and the best solar panels are manufactured by companies like SolarWorld, Canadian Solar, Axitec, Centrosolar, and Kyocera Solar — that is to say, reliable brands that aren’t going anywhere.

Did You Know?

There are three main types of solar panels.

Residential solar panels, though all silicon-based, come in three types and have their own pros and cons.

Polycrystalline panels are the simplest to manufacture and therefore the cheapest, although they can suffer in high-temperature climates and are slightly less efficient than their monocrystalline counterparts (although typically not enough for the average homeowner to worry about). These guys are bright blue and really stand out, as opposed to monocrystalline panels, which are uniformly black. Monocrystalline panels are longer-lasting, the most efficient, and perform better in low-light conditions, which makes them a little more expensive.

Black monocrystalline panels are generally more expensive than their blue polycrystalline counterparts, but they’re also more efficient and more durable.

Thin-film panels, while growing in popularity, are the least efficient of all and require more soft costs. That said, they are light and flexible enough to be transformed into individual solar-powered roof shingles — so cool, and very much an indication of what to expect from solar in the future.

Solar shingles — roof shingles with integrated thin-film solar cells — serve two purposes and look nicer, but they aren’t as efficient as traditional rigid silicon panels. Monocrystalline PV panels are more expensive than polycrystalline panels, but are more efficient, so you’ll need fewer monocrystalline panels to produce the same amount of power.

Most people share their solar energy with their utility companies — but you can keep it all to yourself.

Net-metering is the most popular and cost-effective way to store electricity. It hooks your solar panels back into the power grid, so if your home needs more energy than your solar array can manage, it will automatically pull it in. On the flip side, when your system produces more than you are using, the excess flows back out in the grid — spinning your utility billing meter backward as it goes.

The other option is off-grid, where your electricity is all stored in a large battery bank on your property. The average US home uses 911kWh per month — about 40 batteries worth, which can add upward of $16,000 to your whole setup. That said, storing your energy off-grid means you can have electricity in even the remotest areas, or when the grid fails in a power outage.

You can score a pretty sweet deal on solar right now.

The federal government and various states and municipalities have a ton of subsidies to help transition communities into energy independence and reduce greenhouse gases. One of the most well-known incentives is the the Solar Investment Tax Credit (ITC), a federal 30 percent renewable energy tax credit, which has been extended by Congress through 2019.

Dr. Lombardo told us that he sees an even brighter future for solar: “Prices for PV are dropping, and at the same time, energy costs are increasing. When more utilities install smart meters, they’ll implement time-of-use pricing, which means electricity will cost more during peak demand times like late afternoon. A PV array is a great way to reduce your energy bill, since PV will generate much, if not all, of your electricity during those peak hours.”

Be sure to check your specific area for other types of incentives that can range from rebates to tax breaks to low-interest loans. The NC Clean Energy Technology Center has a nifty search tool for incentives by your ZIP code.

The Bottom Line

Adding solar energy to your home is a great — but massive — investment, so it’s important to pick powerful and efficient panels from a reliable manufacturer.

Take Action

Do the math. If you’re planning on moving before you recoup your initial investment, solar panels don’t make a lot of financial sense. You can use a solar savings calculator to estimate your return, or crunch the numbers yourself to determine your monthly savings. First, divide the monthly output hours of your system by the kilowatt-hours you use per month to find what percentage of your bill solar would cover. (You can find your kilowatt-hours on your electric bill.) Then, multiply your electric bill by that percentage to see how much you could save a month — although assume it will typically be less since you won’t always have perfect solar conditions.

We love our solar panels! They provide low cost, clean energy. The loan terms are excellent and the payoff, with the tax credit and incentives, is pretty quick. Their performance is not quite as strong as we had hoped, and the incentives are subject to change, potentially affecting payback. However, because we paid nothing down, and have a great loan, it continues to feel like we made a great decision.

Sam Kraft Seattle homeowner, installed solar array in 2014

Consider your roof. Since the bulk of the bill comes in the form of soft costs, make sure your roof has 15–25 years of lifetime left. If your roof needs to be replaced sooner than that, you could be saddled with removing, then re-installing, your panels. And before any of that, contact the company that installed your roof to check if adding solar panels may void its warranty.

Shop around for an installer. “A good installer will perform a complete financial analysis, including payback period,” adds Dr. Lombardo. “They will also investigate local, state, and federal incentives, help the customer complete the necessary paperwork to obtain those incentives, and factor those into the financial analysis.” Hobson agrees: “It’s worth noting that there are many quality solar panels, regardless of their technology type. However, consumers should think beyond the panel to find an installer with a positive track record for residential projects.” And the best way to find the right installer for your home is to get several personalized quotes. Click here to customize your search to fit your needs.

  • July 27, 2017 — While we rely on insight from industry experts to inform our choices, note that the opinions expressed in this piece solely represent the views of the editorial staff.