Panasonic Solar Panels Review

Updated: August 17, 2021

Panasonic is one of the best brands in the whole world and has been an industry leader in solar technology for over 45 years. This company provides panels that have gone through rigorous testing for maximum efficiency. Panasonic solar panels are highly durable and efficient. In 1997, this company produced its HIT range which comprises highly advanced and efficient solar panels.

Panasonic solar panels review

Panasonic solar panels are among the best in the industry. Their HIT solar panels have a module efficiency ranging from 19.1% and 20.4%, which is slightly below the market leader, SunPower Solar.

These panels beat most big brands in terms of their temperature coefficient and efficiency percentage. They are highly durable and are built to maximize their efficiency while remaining effective throughout their lifetime.

Panasonic solar panels come with a 25-year product warranty and a 25-year linear performance warranty. The comprehensive Triple Guard warranty guarantees that the solar panels will still have a high efficiency of 90.76% after 25 years. Panasonic’s product warranty matches LG’s and exceeds the industry standard of a 10-year product warranty.

Panasonic has been in the market for over 45 years, making it one of the best companies in the world. It acquired its patent from SANYO, which is also a big name in the industry. This company has an incredible reputation, and its experience in the industry assures you that they will be around long enough to fulfil their warranty.

Cell technology

Panasonic solar panels use a unique and efficient HIT cell structure that incorporates crystalline and amorphous technology. This technology ensures the panels retain more power that is usually lost through the conventional crystalline cell technology cells.

The HIT cell technology makes Panasonic solar panels have a high-temperature coefficient of 0.258%, close to SunPower’s temperature coefficient of 0.29%. This specification ensures that Panasonic solar panels lose the least energy during hot summers. These panels also have a low degradation rate.

FAQ’s Panasonic solar panels

The first cells of the modules were developed by SANYO Electric, now Panasonic, in 1980. This technology utilised the first amorphous silicon cells in the world. The cells, however, had a low conversion rate which prompted the company to include thin-film poly-silicon and laminated amorphous silicon in their structure.

To eliminate impurities, researchers layered the panels’ cells on an n-type silicon substrate and a non-doped I-type amorphous silicon. This significantly improved the overall efficiency and junction characteristics of the panels.

Panasonic picked up the technology in 1990 and developed its first heterojunction solar cell, the photovoltaic module HIT. The unique heterojunction technology utilises ultra-thin amorphous silicon layers that reduce energy loss. The HIT range has earned several awards due to its efficiency and high performance and continues to be the industry’s best module.

Range of Panasonic panels

ModelFeatures
Blackphotovoltaic HIT N-type cells

uses heterojunction cell technology

low annual degradation rate of 0.3%

extremely Low Light Induced Degradation

Zero Potential Induced Degradation
40mm enhanced frame design

19.4% to 20.0% module efficiency

0.258% temperature coefficient

5400Pa (positive/negative) snow load/static wind

25-year product warranty with 86.2% power output

25-year performance warranty
Slimphotovoltaic HIT N-type cells

uses heterojunction cell technology

19.8% module efficiency

low annual degradation rate of 0.3%

0.258% temperature coefficient

extremely Low Light Induced Degradation

Zero Potential Induced Degradation

25 year product warranty with 86.2% power output

25 year performance warranty

sleek space efficient design

2400Pa static wind/snow load
Compactphotovoltaic HIT N-type cells

uses heterojunction cell technology

0.258% temperature co-efficient

19.5% module efficiency

2400Pa static wind/snow load

Extremely Low Light Induced Degradation

Zero Potential Induced Degradation

25-year product warranty with 86.2% power output

25-year performance warranty

compact and sleek design

0.3% annual degradation rate
Powerfulphotovoltaic HIT N-type cells

uses heterojunction cell technology

0.258% temperature co-efficient

25-year product warranty with 86.2% power output

25-year performance warranty

compact and sleek design

0.3% annual degradation rate

Extremely Low Light Induced Degradation

Zero Potential Induced Degradation

19.4 to 20.4% module efficiency

5400Pa (positive/negative) snow load/static wind

40mm enhanced design frame

compact, sleek and space efficient design

Black Series

The HIT black series is one of the best Panasonic solar panels. They boast a high module efficiency and power output that exceeds the industry standards. This series has a low annual degradation rate that means they retain their efficiency after 25 years. This system is designed for optimal efficiency and fits most rooftop designs.

Size: 1590mm x 1053mm x 40mm

Cell type: HIT N-Type

Cell number: 96 cells

Output: 325W – 335W

Weight: 19kg

Cell technology

The HIT cell structure developed by Panasonic is highly unique and efficient. It integrates amorphous and crystalline cell technology that retains the power lost when using conventional crystalline cell technology. This unique heterojunction technology reduces energy loss and increases the output of the panels.

Efficiency

The Panasonic Black Series solar panels are highly efficient. They maintain a high power output of 86.3% after 25 years, making it one of the best in the market. These panels have a slow annual degradation that can provide high power output for a longer time. Besides, it can increase your returns on investment, making it a worthy investment.

Warranty/ Guarantee

Panasonic offers a 25-year warranty that covers the system’s performance, parts, and labor. This warranty guarantees that the solar panels will remain highly efficient and produce about 90.76% of their initial power output. This warranty surpasses most brands in the industry which offer 10 to 12-year warranties for their products.

Peak Performance

Under ideal conditions, the maximum power output of these panels is 335W and gives a module efficiency of 20.0%. This power output is slightly below leading brands such as LG and SunPower, thus placing Panasonic solar panels among the top brands in the industry. For optimal sunlight absorption, installers ensure that they place the panels facing north.

Panels needed for 6.6kW solar system

A 6.6kW Panasonic Black Series solar system requires about 23 panels. These panels have a high output, which means 18 to 20 panels can be enough for a 6,600W solar system. These panels are ideal for all roof types, and their sleek design makes them perfect for homes with little roof space.

Datasheet: Black Series

Slim Series

The Panasonic Slim Series solar panels are designed to fit small and complicated roofs. It seamlessly fits most roofs where bigger panels cannot fit, making it an excellent choice for smaller homes. This series is one of the best in the market, and its sleek design makes it highly sought after by many Australian homeowners.

Size: 1580mm x 798mm x 35mm

Cell type: HIT N-Type

Cell number: 96 cells

Output: 250W

Weight: 15kg

Cell technology

The Panasonic HIT Slim Series has a unique heterojunction technology that uses thin-amorphous silicon layers. The thin dual layers reduce energy loss that enhances the energy output of the panels. The low temperature coefficient of these panels and their high efficiency result in increased power production.

These panels perform excellently at high temperatures while maintaining their power output. This makes this system perfect for all year round, particularly during summer.

Efficiency

These panels have a high module efficiency of 19.8%, which provides high energy yield throughout their lifetime. They come with a high efficiency of 97%, which drops to 95% during the first 10 years. After 25 years, these panels guarantee you an output of 86.2%, which is still high compared to most solar panels.

With an efficiency of over 80% after 25 years, you can still use your panels for more years before you replace them. These panels, therefore, give you a good ROI, making them a thoughtful investment.

Warranty/ Guarantee

Panasonic provides a 25-year performance and 25-year product warranty, which covers labor and parts for the entire period. Panasonic backs its products, and its experience and reputation give you peace of mind. Since the industry standard of solar panels’ lifetime is 25 to 30 years, the warranty covers the panels for their entirety.

Peak Performance

The maximum power output for the Slim Series is 250W from a 96-cell module under optimal conditions. The compact and sleek design of these panels enables high power output and energy yields. These panels provide maximum power production for limited roof space.

Datasheet: Slim Series

Compact Series

Panasonic compact Series is an excellent choice for people looking for high-performance panels. This module combines high power with a compact size. Their compact design allows more solar panel rows on the roof, increasing the roof’s output power.

Size: 1463 mm x 1053 mm x 35mm

Cell type: HIT N-Type

Cell number: 96 cells

Output: 300W

Weight: 18kg

Cell technology

These panels utilise heterojunction technology like all the Panasonic HIT modules. They use ultra-thin amorphous silicon layers to maximise energy consumption and reduce power loss. This results in higher power output than traditional crystalline cells. This technology has made Panasonic cells to be market leaders when comparing their temperature efficiency with other brands.

Efficiency

Compact Series solar panels come with an original high efficiency of 97%. During the first ten years, the panels’ efficiency drops to 96% and maintains at that point for a long time. By the end of 25 years, these panels exhibit a power output of 86.2%.

These panels have a slow degradation of 0.3% per year and a high module efficiency of 19.5%. Unlike other traditional panels, Panasonic assures durability and a reduced payback time of the panels due to their slow annual degradation rate.

Warranty/ Guarantee

These solar panels have a 25-year product and performance warranty backed by a reputable century-old company. They maintain a power output of 86.2% after 25 years. This means they remain functional for many more years even after reaching their lifetime. These panels are, therefore, an excellent choice for long-term investment.

Peak Performance

The peak performance of the Panasonic Compact Series solar panels is 300W under the right conditions. They have a high module efficiency of 19.5% that ensures a high power output throughout the year. Their low-temperature coefficient of 0.258% makes these panels perform incredibly well, especially during summer.

Datasheet: Compact Series

Powerful Series

The Panasonic HIT Powerful Series are the most powerful of all the Panasonic panels. The HIT N340 boasts a high module efficiency of 20.4%. It has the highest output of all of Panasonic’s solar panels.
These panels have approximately 25% more output power than standard panels of the same size. Their high performance makes them one of the best solar panels in the market. These panels also have a high snow and wind load of 5400Pa that ensures their longevity.
Their excellent water drainage design improves self-cleaning. This increases their performance because of reduced dirt and pollution accumulation on the surface.

Size: 1590mm x 1053mm x 40mm

Cell type: HIT N-Type

Cell number: 96 cells

Output: 335W – 340W

Weight: 19kg

Cell technology

The Panasonic Powerful Series solar panels’ unique HIT cell structure uses both amorphous technology and crystalline technology to reduce power loss through conventional crystalline cell technology panels. This heterojunction technology allows these panels to have a high-temperature coefficient in the market, unlike most similar brands.

Efficiency

These panels are among the top-rated solar panels because of their high efficiency. With an initial output power of 97% and low annual degradation of 0.3%, these panels offer longevity. After the first ten years, their efficiency stands at 95% and drops to 86.2% after 25 years, when the warranty expires.

The panels’ high efficiency reduces payback time while you continue to enjoy enough electricity for over 25 years. With such a low annual degradation rate, these panels can last up to 40 years.

Warranty/ Guarantee

Panasonic solar panels come with a 25-year performance warranty and a 25-year product warranty with a guaranteed output of 86.2%. The warranty covers parts and labor as well. Since Panasonic has been in the market for many years, you are guaranteed that it will still be around to honour the warranty.

Peak Performance

The Panasonic Powerful Series solar panels have a module efficiency ranging from 19.4% to 20.4%. Under optimal conditions, these panels can produce up to 325W to 340W for a 96- module cell. To ensure the panels receive maximum sunlight, you should ensure they have an optimal angle orientation on your roof.

Datasheet: Powerful Series

Australian office?

Panasonic Solar has an office in Macquarie Park, NSW, in Australia. This is their main office which is also the main warehouse.

Why an Australian office is important

Having an Australian office is paramount to improve customer service to all Panasonic solar panels homeowners. It is easier to contact an office in Australia than to contact offices in Malaysia.

With Australian offices, customers can resolve issues with their warranties or the efficiency of the panels. More so, customers will get direct help from the manufacturers instead of relying on local suppliers that have proven unreliable over the years.

If a particular local installer goes out of business before the warranty period elapses, customers can contact Panasonic Solar directly for help. With an Australian office, customers can get their issues resolved faster and better.

Panasonic solar panel specification/ datasheet

 BlackSlimCompactPowerful
Cell Number96 cells96 cells96 cells96 cells
Cell TypeHIT N-TypeHIT N-TypeHIT N-TypeHIT N-Type
Power Output325W – 335W250W300W335W – 340W
Nominal Power Voltage59.2V – 59.9V44.3V53.1V57.6V – 59.7V
Power Density1.5 J/m31.5 J/m31.5 J/m31.5 J/m3
Panel Efficiency19.4% - 20.0%19.8%19.5%19.4% - 20.4%
Annual Power Degradation0.3%0.3%0.3%0.3%
Dimensions1590mm x 1053mm x 40mm1580mm x 798mm x 35mm1463 mm x 1053 mm x 35mm1590mm x 1053mm x 40mm
Weight19kg15kg18kg19kg
Product Warranty25-year25-year25-year25-year
Performance Warranty25 years25 years25-year25-year
Operational Temperature Range44 ± 3°C44 ± 3°C44 ± 3°C44 ± 3°C
Made inMalaysiaMalaysiaMalaysiaMalaysia

FAQs

Yes, Panasonic solar panels are tier 1. Panasonic is a big brand and has a good reputation in the industry. It has been an industry leader for solar technology for over 45 years. This assures you that the company will still be in business long after your panels have been installed.

Panasonic solar panels are manufactured by Panasonic, which has been the market leader in heterojunction technology. Panasonic acquired its original patents from SANYO, and it produces HIT modules that are unique in the industry.

Panasonic solar panels are manufactured in Kedah, Malaysia, and the United States. They also have facilities in Shiga and Osaka in Japan. Their factory in the United States is in Buffalo, New York where Panasonic manufactures solar panels for their own brand and their partner Tesla. Most of the panels are, however, manufactured abroad.

Panasonic solar panels last for approximately 25 years and still retain an efficiency of 90.7%. These panels’ efficiency is slightly less than SunPower X panels which retain efficiency of 92% after 25 years. Therefore, these panels are reliable and can still generate enough power for several years even after their warranty expires.

Ben McInerney head shotAuthor: Ben McInerney is a renewable energy enthusiast with the goal of helping more Australians understand solar systems to make the best choice before they purchase. Having an accredited solar installer in the family helps give Ben access to the correct information, which allows him to break it down and make it easily understandable to the average homeowner.