10 Best Solar Panel Systems for a Home

It can be difficult to find the best solar panels on the market in the UK, as there are so many different brands and models to choose from. The answer to ‘what are the best solar panels for my home?’ will differ from household to household. It depends on whether you are focused on efficiency, power, size, or durability.

To help you, we have compiled a list of the 10 best solar panels in the UK.

  • SunPower Maxeon 3
  • Peimar SM325M (FB)
  • SunPower P19-320-BLK
  • Yingli PANDA Bifacial 72CL
  • LG NeON R 365
  • Sharp NU-AF
  • Q. Cells Q.Peak Duo BLK-G6
  • Panasonic HIT N340
  • Panasonic HIT N300
  • Amerisolar AS-6P30

How to Choose the Best Solar Panels (10 Criteria)

There are many factors to evaluate when you are looking for the best solar panels for your home. We have analysed the top 10 solar panels according to the following ten criteria:

  1. Type: There are two types of solar panels that dominate the market: monocrystalline and polycrystalline.
  2. Power: The ‘power’ of a solar panel is measured in watts (W). This figure represents the energy output of a panel system in Standard Test Conditions.
  3. Efficiency: Solar panel efficiency, which is expressed as a percentage, measures how much sunlight can be converted into usable electricity. Most domestic solar panels have an efficiency of 15-20%.
  4. Power tolerance: This factor determines how much your system can deviate from its stated power (watts). This deviation can be expressed either in percentages or watts. If a 100W panel has a power tolerance of +3% / −0%, then the actual power may vary between 100-103W. If the power tolerance is +5W / −0W, then the actual output varies between 100W and 105W under real-world conditions.
  5. Temperature coefficient: You want to know how much your panel’s efficiency will be affected by temperature rise. Temperature coefficient expresses the percentage decrease in power output per 1°C increase in temperature (after 25°C).
  6. Size: If you have limited roof space, the physical size of a panel might be your top priority. The dimensions of the top 10 solar panels are listed in L × W × H.
  7. Weight: Knowing how heavy your solar panel system will be is important. If your roof is not very strong, you will need to opt for light-weight panels.
  8. Product warranty: Solar panel manufacturers offer warranties on their equipment, ensuring they can last. Warranties on our list range from 10-25 years.
  9. Performance degradation: Every solar panel will experience some kind of performance degradation over its 25-year lifespan. After the 1st year, there is usually a 2-3% decline in efficiency, and 0.2-0.7% every year after that.
  10. Maximum wind load: You want your solar panels to withstand any kind of weather in the UK, including strong winds and hurricanes. This tolerance is tested by manufacturers and is expressed in pascals (Pa). The higher the number, the higher the wind tolerance, but most panels are certified to withstand 2,400 Pa, which is equivalent to 140 mph.

Top 10 Solar Panels – Reviewed

SunPower Maxeon 3

SunPower has been developing solar panels since 1985 and is one of the most well-known US-based solar panel manufacturers on the market. They offer a staggering 25-year product warranty on their panels.

Their Maxeon 3 panel is one of the most powerful domestic solar panels out there with 400 watts, and an impressive 21.2% efficiency rate. Its temperature coefficient is also amongst the lowest, meaning that for every 1°C increase above 25°C, only 0.29% efficiency is lost.

SunPower Maxeon 3 Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 400W 21.2% +20W / −0W −0.29% / °C 1,690 × 1,046 × 40mm 19.0 kg
  • Product warranty: 25 years
  • Performance degradation: 2.0% first year, then 0.2% per year
  • Maximum wind load: 4,000 Pa

In addition, the SunPower Maxeon 3 panel has the lowest performance degradation rate of all panels listed, with only 2% degradation in the first year, and 0.2% every subsequent year. It also boasts one of the highest maximum wind loads of 4,000 Pa, meaning your panels would be safe even during a category 5 hurricane.

SunPower’s Maxeon 3 is one of the highest quality panels currently on the market, so if you are after a premium product that will retain a very high degree of efficiency, then this is your solution.

Peimar SM325M (FB)

Peimar, an Italian based company, specialises in design, research and manufacturing of high efficiency photovoltaic modules. Their panels have a modern design, using matching black cells and panels and have a long lifespan.

This SM325M (FB) model is a high performance 325W monocrystalline panel operating at a high efficiency rate of 19.48%.

Peimar SM325M (FB) Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 325W 19.48% -0 / +5W −0.37% / °C 1,665 × 1,002 × 40mm 18.6 kg
  • Product warranty: 20 years
  • Performance degradation: 3.0% first year, then 0.59% per year
  • Maximum wind load: 5,400 Pa

Peimar SM325M (FB) has a 20 year product warranty along with a 30 year power output warranty. This model has a performance degradation of 3% in the first year and 0.59% from the second year onwards.

Peimar panels are designed to provide customers with maximum output with super high performance making them ideal for space restricted homes and challenge weather conditions.


SunPower P19-320-BLK

SunPower’s P19-320 panel is a smaller version that is suitable for limited space. Its standout features are its lightweight, compact size. At just 18.7 kg, this monocrystalline panel still has 320W of power and an efficiency rate of 19%.

SunPower P19-320-BLK Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 320W 19.0% +16W / −0W −0.37% / °C 1,690 x 998 × 40mm 18.7 kg
SunPower P19-320-BLK Solar Panel
  • Product warranty: 25 years
  • Performance degradation: 3% the first year, then 0.6% per year
  • Maximum wind load: 2,400 Pa

SunPower’s 25-year product warranty will give you peace of mind. The P19-320 panel also has a relatively low-performance degradation rate, with a loss of 3% in the first year, and only 0.6% every subsequent year. Finally, this panel assures the standard certified maximum wind load of 2,400 Pa.

If you have a home with a small roof and in need of a light-weight panel, then the Sunpower P19-320 model is for you.


Yingli PANDA BIFACIAL 72CL

Yingli has been producing solar PV products since 2003 and is based in China. The Yingli PANDA BIFACIAL 72CL panel can absorb sunlight from both sides of the panel, which is ideal for ground-mounted systems or raised systems on flat roofs as light can bounce onto the back of the panel. This model has a power capacity of 390W and a high-efficiency rate of 20.5%.

Although it is compact in size — with an astoundingly thin 6mm panel — the PANDA BIFACIAL 72CL is the heaviest panel on our list, at 27.5kg. It has a slightly lower power tolerance than other models, however, the performance degradation and temperature coefficient are above average.

Yingli PANDA BIFACIAL 72CL Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 390W 20.5% +5W / −0W −0.38% / °C 1,975 × 992 × 6mm 27.5 kg
Yingli PANDA BIFACIAL 72CL Solar Panel
  • Product warranty: 10 years
  • Performance degradation: 2.0% first year, then 0.5% per year
  • Maximum wind load: 2,400 Pa

Yingli offers the shortest product warranty of the manufacturers on our list, but their performance warranty guarantees a loss of only 2% efficiency in the first year, and 0.5% each year thereafter. Finally, the maximum wind load is the industry standard of 2,400 Pa, which means the panel can withstand winds of up to 140 mph.

If you are looking for a great all-around bifacial solar panel, then Yingli’s PANDA BIFACIAL 72CL panel could be the best solar panel for your needs.


LG NeON R 365W

LG, the South Korean electronics giant, is also a premium solar panels manufacturer. Its NeON R series consists of reliable, efficient, and durable solar panels. The 365W panel is the mid-range of the three models and has the second-highest efficiency rating on our list at 21.1%. LG offers a 25-year product warranty.

The most impressive feature of this panel is its maximum wind load of 5,400 Pa. This means the NeON R 365W panel can withstand winds of up to 209 mph: stronger than any recorded winds in the UK.

LG NeON R Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 365W 21.1% +11W / −0W −0.3% / °C 1,700 × 1,016 × 40mm 18.5 kg
  • Performance degradation: 2.0% first year, then 0.5% per year
  • Product warranty: 25 years
  • Maximum wind load: 5,400 Pa

The NeON R 365W panel has a low-temperature coefficient of -0.3% per 1°C increase. In addition, it has a low-performance degradation of 2% in the first year and 0.5% every subsequent year. All of these impressive features are packed in a lightweight solar panel, weighing just 18.5kg.

Overall, this is a powerful, efficient, durable and lightweight solar panel.


Sharp NU-AF 370W

The Tokyo-based, internationally recognised electronics manufacturer started producing photovoltaic products in 1963. Sharp’s NU-AF 370W solar panel is one of the smallest solar panels, at only 1,960 x 992 x 40mm. This is ideal for roofs with limited space. It has an above-average power tolerance of +19W, and an average temperature coefficient of −0.375% / °C.

Sharp NU-AF Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 370W 19.0% +19W / −0W −0.375% / °C 1,960 × 992 × 40mm 22.5 kg
  • Performance degradation: 3.0% first year, then 0.7% per year
  • Product warranty: 10 years
  • Maximum wind load: 2,400 Pa

The NU-AF 370W panel only has a 10-year warranty, which is amongst the shortest product warranties on the market. It also has performance degradation of 3% in the first year, and 0.7% in the years thereafter, which is higher than the other panels on this list.

Overall, the Sharp NU-AF 370W model can be the best solar panel for those looking to invest in a compact, high-power solar panel.


Q.Peak Duo BLK-G6 345W

Q CELLS is a German solar panel manufacturer that offers robust and reliable products, including the Q.Peak Duo BLK-G6 series. The most powerful of the series is the 345W panel, which has an efficiency rate of 19.3%.

Q CELLS Q.Peak Duo BLK-G6 Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 345W 19.3% +5W / −0W −0.36% / °C 1,740 × 1,030 × 32mm 19.9 kg
  • Product warranty: 12 years
  • Performance degradation: 2% the first year, then 0.5% per year
  • Maximum wind load: 4,000 Pa

Besides its power and efficiency, the Q.Peak Duo series panels have an impressive 4,000 Pa maximum wind load, making these some of the most sturdy panels on the market.

In terms of temperature coefficient, size, and weight, this Q CELLS panel is in the average range. With a 12-year warranty, and performance degradation of only 2%in the first year, and 0.5% in the years after, you would be investing in a dependable solar panel model.


Panasonic HIT N340

Panasonic has been producing solar panels since 1975 and has become a premium manufacturer, reflected in the 25-year warranty. The HIT N340 module has an impressive efficiency rate of 20.4%, and a low-temperature coefficient of −0.258% / °C, losing only 0.258% of its efficiency for every 1°C increase.

Panasonic HIT N340 Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 340W 20.3% +34W / −0W −0.258% / °C 1,590 × 1,053 × 40mm 19.0 kg
  • Product warranty: 25 years
  • Performance degradation: 3% first year, then 0.5% per year
  • Maximum wind load: 2,400 Pa

HIT N340’s power tolerance is also industry-leading. At +34W/−0W, the maximum power output of the HIT N340 panel can actually be 374W. When it comes to weight, this panel is relatively light compared to others on our list.


Panasonic HIT N300

Another model in Panasonic’s HIT N series is the 300W panel, which is a great mid-range model for those seeking a lightweight solution, as it weighs only 18kg. Despite it being a less powerful version of the N340 model, it still has a module efficiency of 19.5%.

Panasonic HIT N300 Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Mono 300W 19.5% +30W / −0W −0.258% / °C 1,463 × 1,053 × 35mm 18.0 kg
  • Product warranty: 25 years
  • Performance degradation: 3% the first year, then 0.5% per year
  • Maximum wind load: 2,400 Pa

The impressive power tolerance of +30W / −0W means the HIT N300 panel can have a maximum power output of 330W. Its temperature coefficient, just like its HIT N340 counterpart, is an impressive −0.258% / °C.


Amerisolar AS-6P30

Amerisolar is a solar panel manufacturer based in the United States and has been producing solar modules for 25 years. Their AS-6P30 model has a power output of 280W and is the only polycrystalline panel on our list.

Compared to its monocrystalline counterparts, it does have a lower efficiency rate at 17.5%. In addition, its temperature coefficient is −0.41% / °C, which is on the higher end of the industry average. On the other hand, its performance degradation is superior to other market players, with only a 2.5% efficiency loss in the first year, and 0.5% each year thereafter.

Amerisolar AS-6P30 Specifications
Type Power Efficiency Power Tolerance Temperature Coefficient Size Weight
Poly 280W 17.5% +8W / −0W −0.41% / °C 1,640 × 992 × 40mm 18.5 kg
  • Product warranty: 12 years
  • Performance degradation: 2.5% first year, then 0.5% per year
  • Maximum wind load: 2,400 Pa

The AS-6P30 model is a relatively lightweight solar panel and has a maximum wind load of 2,400 Pa. Overall, it is a great polycrystalline solar panel.


What Are the Most Reputable Solar Panel Manufacturers?

Since the upswing of the use of renewable energy, there has been an increase in solar panel manufacturers on the global market. At GreenMatch, we work with both industry veterans that have been producing photovoltaic modules since the 1960s and new players on the market that are making strides in solar energy technology.

Author: chachito

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