Best Solar Panels

Expert guide to top five solar panels for home installation

Best overall

SunPower and REC modules stand out as the best overall solar panels on the market in 2024, SunPower’s solar panels boast exceptional efficiency, durability, and performance. REC panels offer advanced design, high efficiency, and reliability. REC’s solar technology delivers top-tier performance and energy output, even in low-light conditions.

 Best solar panels by cost

• Hanwha Q CELLS Peak Duo: Average price per panel is $256.50
• REC Alpha Pure Series: Average price per panel is $317.50
• Silfab: Average price per panel is $253.00

Best solar panels by efficiency

• REC Alpha Pure Series: Average efficiency 21.4%
• SunPower® A-Series: Average efficiency 21.2%
• Panasonic EverVolt: Average efficiency 21.7%

 Best solar panels by warranty

• Hanwha Q Cells: Hanwha’s 25-year performance and product warranty states that the panels will “produce a power output of at least ninety-eight percent (98%) of the minimum power output…during the first twelve (12) months” and that the panels will maintain a “minimum power output of eighty-six percent (86%) of the minimum power output” for the duration of the warranty.
• Panasonic EverVolt: The 25-year performance and product warranty covers “performance output and labor to replace and repair all major components” in your solar panel system, including microinverters and racking. The warranty requires that panels and hardware be purchased and installed as a bundle by a Panasonic authorized, premium, or elite installer. Panasonic will stop producing solar panels at the end of the fiscal year 2022. However, Panasonic “will stand behind their existing warranties to cover the 25-year product and performance warranties.”
• REC Alpha Pure Series: This 25-year performance and 20-year product warranty state that in years two through 25, “the actual power output will decline annually by no more than 0.25%.” This statement guarantees “an actual output of at least 92%” in the final year of the performance warranty.

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Types of solar panels

There are three main types of solar panels, varying in characteristics, quality, and price

• Polycrystalline
• Monocrystalline
• Thin film

Polycrystalline

Polycrystalline solar panels are made from multiple silicon crystals fused to form a single panel. Each crystal in a polycrystalline panel is randomly oriented, creating a grainy appearance. The manufacturing process of polycrystalline panels involves melting raw silicon and then pouring it into a square mold, where it solidifies into a large block. Polycrystalline solar panels usually have lower efficiency than monocrystalline panels because of the random orientation of the crystals. The efficiency levels of most polycrystalline panels range between 13% and 16%. But they are easier to produce and are typically more affordable than monocrystalline solar panels.

Monocrystalline

Unlike polycrystalline solar cells, monocrystalline panels are made from a single and continuous crystal of high-purity silicon. Due to the use of highly refined silicon, monocrystalline panels tend to be more durable and efficient in turning sunlight into electricity than other types of PV panels. Their efficiency levels range between 15% to more than 22%. They also have a uniform appearance with a smooth texture and a nearly black color. Compared to polycrystalline and thin-film panes, monocrystalline panels are more expensive due to the expensive manufacturing process.

Thin film

Thin film panels use thin layers of silicon and other semiconductor materials to convert sunlight into energy. Unlike monocrystalline and polycrystalline panels made of thick and firm cells, a thin film array is typically more flexible, moldable, and lightweight. They can be easily integrated into buildings and other structures like camping tents, RVs, streetlights, rooftops of electric vehicles, buses, and boats. Thin film is easier and cheaper to manufacture, but the efficiency levels will depend on the type of semiconductor material used in the cells — it typically ranges between 7% and 18%.

Hanwha Q CELLS Peak Duo

We picked Hanwha Q CELLS as some of the best solar panels on the market because they boast a long lifespan of over three decades and a super-low degradation rate (.54% degradation of productivity per year). The 21.1% max efficiency rating makes them some of the most efficient solar panels on the market. The manufacturer guarantees at least 93.5% of the nominal power of its solar panels for up to 10 years.  Solar energy works by turning sunlight into usable energy, and these panels will keep producing energy at a high volume for years. The Hanwha panels are also a PV Evolution Labs (PVEL) award winner for six years. PVEL is an independent lab that scores solar panels annually.

What we like: Hanwha panels are certified for high snow (5400 Pa) and wind loads (2400 Pa), which makes them ideal even in  winter weather. They are also designed to perform in low-light conditions, which means they can produce more electricity even when the sun isn’t shining as brightly. Hanwha Q CELLS panels are also made with high-quality materials using sustainable practices.

What to consider: Some older models of the Hanwha Q Cells offer a 12-year warranty instead of 25 years.

REC Alpha Pure Series

REC Alpha solar panels generate  renewable solar energy even in shaded areas. These high-powered solar panels are “solder-free,” providing an aesthetically pleasing design and look. REC also has removed lead from all their solar panel components, making these arrays some of the most environmentally friendly choices on the market. Emphasizing its commitment to the environment, the company also uses renewable energy sources, including solar power, to manufacture its solar panels.

What we like: Though compact, these panels are designed without gaps between the cells, increasing the panel’s active square footage for  maximum efficiency. REC Alpha Pure Series are made of high-quality materials, including a strong aluminum frame and tempered glass, which make them more resistant to extreme weather events like snow, hail, and powerful wind.

What to consider: Panels must be installed by a REC Certified Solar Professional installer to qualify for the entire 25-year quality of work warranty.

Panasonic EverVolt

Panasonic has been manufacturing solar panels for more than 40 years and has a proven track record of delivering high-performance products. The Panasonic EverVolt solar panel is a reasonably-priced product from an established name in the electronics industry. EverVolt panels have extensive product and performance warranties, ensuring a higher-than-average power output in their lifespan.

What we like: Solar panels from this legacy brand have some of “the industry’s lowest annual degradation rates.” A “power output of at least 92% is guaranteed after 25 years,” according to their product page. These solar panels are also designed to resist severe weather conditions and debris impact.

What to consider: If you plan to get a solar battery, an EverVolt battery is designed to work best with these Panasonic solar panels.

Silfab

Solar panels from Silfab use innovative conductive backsheet and integrated cell designs, which let more light collect and convert into energy. This new technological innovation provides durability, strong performance, and an appealing look for homeowners. Silfab panels are designed to withstand harsh weather conditions like snow, hail, and wind.

What we like: Silfab’s solar panels have some of the highest efficiency levels reaching up to 22.3%, meaning they can produce more electricity in a smaller space. They come with a warranty of 85.1% of nameplate efficiency after 25 years, guaranteeing long-term panel efficiency and financial savings for customers. In addition, Silfab panels are made with sustainable manufacturing processes and are certified as environmentally friendly by the International Organization for Standardization (ISO).

What to consider: Silfab doesn’t offer installation services of its solar panels.

SunPower® A-Series

Ranging between 21% and 22.8%, SunPower panels may be the most efficient solar panels on the market today. With SunPower’s solar panels, you can cover your home’s electricity needs with fewer panels, which makes them ideal for homeowners with limited roof space. These panels are designed with a sleek and modern look, which compliments the design of any home.

What we like: SunPower’s Equinox integrated system is designed to have “fewer visible parts” for increased curb appeal. SunPower solar panels are resistant to degradation and corrosion and can last for decades without losing efficiency.

What to consider: You will pay a premium for SunPower’s solar panels, almost twice or three times as much as others.

Take advantage of government incentives

Investing in solar panels isn’t cheap. But you can save thousands in upfront costs with federal, state, and local incentives. One of the most significant incentives is the federal Residential Clean Energy Credit (formerly called the Investment Tax Credit), which lets you claim 30% of the total cost of solar as a tax credit on federal taxes. However, you can only qualify for this tax credit if you buy or finance your system. If you lease your system or sign a solar power purchase agreement (PPA), you will not qualify for the federal tax credit.

Many states also offer solar incentives. Database of State Incentives for Renewables & Efficiency (DSIRE) is an excellent resource for searching for state-specific incentives, which will help you save more on your solar investment. In addition, it’s worth checking your city and utility for information on any incentives specific to your location.

How to choose the right solar panels for you

The best residential solar panels are those that meet your specific needs and preferences. Here are some critical factors to consider as you weigh your solar panel choices:

• Determine your energy needs. Start by calculating your average energy use in kilowatt-hours (kWh) over a month or a year. This data will help you determine the correct size and capacity of the solar panel system you need. Your electricity bill will typically include a chart of your usage over the past year.
• Consider solar panel efficiency. Efficiency levels can vary between high-efficiency monocrystalline solar panel brands. For example, Panasonic EverVolt has a higher average efficiency level of 21.7% than the REC Alpha Pure Series at 21.4%. If you have a small roof, higher-efficiency panels might be a better choice, even though they may cost slightly more than less efficient panels.
• Pay attention to warranty details. All the panels in this review have a standard 25-year warranty. When picking solar panels, look for certifications like the IEC 61215 and IEC 61730, which guarantee that the panels meet quality and safety standards.
• Check customer reviews. Customer reviews can provide insights into the performance, durability, and quality of various solar panels.
• Get multiple quotes. Some solar system installers may not use the type and brand of solar panels and components you prefer. Quotes should include equipment options. Request estimates from several solar panel installers to compare their prices and equipment, including the panel brands and warranties.
• Calculate savings over time. Saving money on your electricity bill is a major incentive for going solar.  After the initial investment, there are minimal ongoing expenses. If you choose to get a solar  In addition, if you enter a net metering or billing agreement, any excess energy generated can be sold back to the electric utility for credits on your utility bill If financial reasons are your main goal with solar, you should aim We can help you calculate your potential 20-year savings with solar when you input your information.

Benefits of solar panels

Solar power gives you several financial and environmental benefits.

• Price stability. Solar panels shield you from utility rate fluctuations.
• Increased home value. According to the U.S. Department of Energy, a solar system can add about $15,000 in value if you decide to sell your home. Remember that solar panels add value to your home if you own them, while leasing solar doesn’t necessarily impact your home’s value.
• Lower carbon footprint. Because solar is a renewable energy source, you will significantly reduce your home’s carbon footprint.

The price isn’t the only factor to consider when choosing the best solar panels. It’s essential to pay attention to the efficiency of solar panels, product and performance warranties, solar panel types, and customer reviews before investing in them.

Why is solar panel durability important?

The efficiency of solar panels declines over time due to exposure to elements, ultraviolet radiation, and other environmental factors. However, choosing a more durable panel can slow down solar panel degradation, guaranteeing a consistent production of energy over the years. A durable solar panel lowers the need for frequent maintenance and repairs. Durability is also important if you live in areas prone to harsh weather conditions like hurricanes or hailstorms.

The monocrystalline solar panels in this review are among the most durable options available, lasting over 25 years. The use of a single crystal structure and rigorous manufacturing processes contribute to their exceptional durability.

How does the environment affect solar panel efficiency?

Environmental factors, including temperature changes, shading, dust, and humidity, can significantly impact solar panel efficiency. While solar panels are designed to resist the elements and withstand harsh environments for decades, they can degrade faster and produce less electricity without proper care.

Temperature changes, shading, dust, debris, and humidity can impact the durability and efficiency of your solar panels. Typically, solar panels perform best in cooler temperatures, while heat can lower their efficiency. Shading around solar panels can significantly lower their performance. Dust can reduce the sunlight on your panels and minimize efficiency, while debris can scratch and damage the panels. Similarly, humidity can cause moisture accumulation on top of solar panels and decrease efficiency.