If you are looking for the most efficient solar panels, the first thing you should to do is compare the metrics of different brands. This number will tell you how much electricity each product will produce. Finding the most efficient solar panels can be a challenge, as there are over a hundred different kinds on the market to consider. We will discuss some of the things you should look for when shopping for solar panels in this review. Hopefully, it will help you to make the best decision for your project and choose the most efficient solar panels on the market.

Solar Panel FAQ

What Are The Most Efficient Solar Panels?

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Efficiency is based on how well a solar panel converts sunlight into electricity. The top five manufacturers are SunPower at 22.2%, Panasonic at 21.6%, LG at 21.1%, Hanwha Q Cells at 19.6%, and Solaria at 19.4%. The majority of solar panels are in the range of 15% to 17%. The higher the efficiency rating is, the more you will pay.

What Are The Best Solar Panels?

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SunPower, LG, and Panasonic make some of the best solar panels on the market. They offer 25-year warranties, competitive pricing, and are highly efficient. They combine fair pricing, premium protection, reliability, and durability.

What Are Some Tips When Shopping For The Most Efficient Solar Panels?

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Do your research and use our reviews to help you make the best selection for your needs. You should compare as many companies as you can to ensure you aren’t overpaying. Working with smaller contractors may save you some money on installation, make sure to get free quotes you can compare. Evaluate all of your quotes and include all the equipment you need to get a good idea about what will work for your budget.

How We Reviewed

The following products were reviewed based on the following parameters: features, pros and cons, where to buy, and warranty. We came up with this list by investing time and effort into researching different models to provide you with an unbiased “best of” list.

Overall Price Range Of The Most Efficient Solar Panels (And Similar Products)

The price range of the most efficient solar panels is between $144 to $1,956. Some things that a higher-priced model might get you that a lower-priced model might not include different materials, the technology used, the size of the panel, and the efficiency ratio.

What We Reviewed

Product

Product name

Warranty

SunPower

25-year warranty

Panasonic Solar Panel

25-year warranty

LG Solar Panel

25-year linear warranty

Hanwha Q CELLS

25-year linear warranty

Solaria

25-year warranty

Itek Energy

30-year linear warranty and 12-year workmanship warranty.

Heliene

25-year linear warranty and a 10-year product warranty.  

Renogy Solar

25-year power output warranty.

Mission Solar

25-year linear warranty

Silfab

30-year linear warranty and 12-year workmanship warranty.

SunPower

SunPower

Price

This product can be found on Amazon for around $$.


Warranty

This company offers a 25-year warranty that covers parts, labor, and performance.

Features

SunPower’s flexible design is made from light-weight polymers that can flex up to 30 degrees allowing for easy installation. Each panel consists of 32 monocrystalline maxeon solar cells that are built on a copper sheet. SunPower designs, engineers, and manufactures all of their products, making this one of the most efficient solar panels on the market. Installing a solar system can increase the value of your home when it comes time to sell.

Pros

  • Saves money on energy bills
  • Complete system warranty
  • Tax credits and utility rebates may be applied to offset the cost

Cons

  • Not good for shaded areas
  • Electrical consumption will increase
  • Installation is extra

Panasonic

Panasonic Solar Panel

Price

This product can be found on Amazon for around $$.


Warranty

Panasonic offers a 25-year warranty on the product, including workmanship, parts, and linear power output.

Features

Panasonic offers several designs to choose from including their N325 and N330. We will review the N325 which contains 96 cells that combine immediate energy savings with a 19.4% efficiency module. The N325 saves on space; it uses the same footprint as a 60-cell panel does for the N325 96-cell design. It’s great for large or small roofs.

The cell structure is done in a pyramid design to capture the most sunlight. This reduces outward reflection to direct the sun’s energy inside the cells. It allows for solar power to be produced faster giving you more power to use in your home. Electron loss is reduced by using heterojunction technology which uses thin amorphous layers of silicon. This is a high-efficiency design that provides a greater output over the long run making it one of the most efficient solar panels. Bifacial cells work with the pyramid cells to increase output.

They have improved how rain accumulation is handled by draining water through the frame; this eliminates water stains. Water stains can prevent sunlight penetration and efficiency. It will perform even in the hottest temperatures.

Pros

  • Efficient design to capture more sunlight
  • High output at high temperatures

Cons

  • Installation is extra
  • Electrical costs may increase

LG

LG Solar Panel

Price

This product can be found on Amazon for around $$.


Warranty

There is a 25-year linear warranty on the product.

Features

LG offers a variety of solar panel options depending on what your needs are. We will focus on the LG315N1K-A5 315-watt solar panels in this review. This premium panel will generate more electricity than a standard panel when measured by square footage making it one of the most efficient solar panels. It’s a great option for those with limited space who want maximum energy production. It uses a monocrystalline cell that measures 162 by 162 mm and 1686.0 mm in length. Each panel contains 60 cells.

Pros

  • Saves money on energy bills
  • May be eligible for a rebate

Cons

  • Breakeven for cost can be several years
  • Installation is a separate cost

Hanwha Q CELLS

Hanwha Q CELLS

Price

This product can be found on Amazon for around $$.


Warranty

This product comes with a 25-year linear warranty.

Features

Hanwha Q CELLS is one the largest Photovoltaic manufacturers in the world. This company is known for its high-quality and high-performance modules and cells. Hanwha is from South Korea and offers an array of solar panels that will fit your project. In this review, we will take a look at their Q.PEAK BLK-G4.1290 290-watt solar panels.

This standard panel will perform well under most conditions. It is efficient and offers good power output making it one of the most efficient solar panels. It has a monocrystalline cell with 60 cells per panel. It is resilient to hail, wind and snow.

Pros

  • 25-year linear warranty
  • Engineered in Germany

Cons

  • Material warranty for 12 years
  • Performance is standard

Solaria

Solaria Solar Panel

Price

This product can be found on Amazon for around $$.


Warranty

It comes with a 25-year warranty.

Features

Developed in California, Solaria offers high-density solar panels that offer 20% more power than standard modules. Their patented cell cutting reduces inactive space between cells. The Solaria panel design has no bus bars which eliminates losses that occur with that design. The design is overlaid without the need for soldering. This reduces power loss, and the resulting design produces a stunning visual appearance for your home.

The company has been in business since the early 2000s. They have over 100 patents that encompass equipment, manufacturing automation, products, applications, processes, and materials. As silicon costs declined, solar production shifted toward China. Solaria leveraged their technology and knowledge to compete in the market, making it one of the most efficient solar panels.

Pros

  • Reliable and durable using ribbon-less connections
  • Designed to exceed 25-year warranty

Cons

  • May increase electric costs
  • Installation is separate

Itek Energy

Itek Energy

Price

This product can be found on Amazon for around $$$.


Warranty

Silfab solar panels come with a 30-year linear warranty and 12-year workmanship warranty.

Features

Itek Energy is being operated as Silfab Solar as of October 1st, 2018; we will refer to them as Silfab in this review. Silfab is one of the largest manufacturers of PV solutions and modules in North America. They offer more than 35 years of experience and offer both a 25-year enhanced product warranty and a 30-year performance warranty with their products.

The Itek Energy IT295SEBW40MM high-efficiency solar panel module offers a 295-watt monocrystalline cell making it one of the most efficient solar panels. It has a black aluminum frame and weighs in at 43 pounds.

Silfab products are warrantied for 12 years for workmanship and 30 years for linear power performance. Their SLA-MWT 320 Wp 60 Cell panel offers an option for both residential and commercial projects. Each panel consists of 60 Si monocrystalline cells. Their panels are tempered with anti-reflective coating. The frame is made of anodized aluminum.

Pros

  • Silfab products are made in North America
  • Silfab’s mission is to reduce carbon emissions

Cons

  • Itek has been acquired by Silfab which may not carry their product line
  • Itek product availability may be limited

Heliene Inc.

Heliene Inc.

Price

This product can be found on Amazon for around $$.


Warranty

This product includes a 25-year linear warranty and a 10-year product warranty.  

Features

Heliene was created from the alliance of North American entrepreneurs and Helios in Europe. The company is committed to advancing solar panel technology and invests between 5% and 8% of their annual revenue to R&D. They have been in business for seven years. Their products are built to order, making this a cost-effective, easy, and simple process.

Minimal human interaction is required in manufacturing as they utilize robotics in their manufacturing process. They offer a variety of models. We will review the 36m, which is a 36-cell monocrystalline module. It offers 180 Wp with 18% module efficiency making it one of the most efficient solar panels. The frame is constructed of double webbed 15-micron anodized aluminum alloy.

Pros

  • 10-year product warranty
  • 25-year linear performance guarantee

Cons

  • One of the higher-priced options on the market

Renogy Solar

Renogy Solar

Price

This product can be found on Amazon for around $.


Warranty

It comes with a 25-year power output warranty.

Features

The Renogy 100-watt solar panel boasts a slim design and is the company’s most popular panel. It has a smaller footprint and is favored for rooftops, campers, boats, and RVs, making it one of the most efficient solar panels. It has a waterproof junction box and connectors and weighs 16.5 pounds. The low-tempered glass is high transparency, anti-reflective, impact resistant, and has enhanced stiffness.

Pros

  • Can be used with tilt or pole mounts and Z-brackets
  • 25-year/80% efficiency rate

Cons

  • Showed hot spots within two weeks of use
  • Defective, had multiple cracks upon arrival

Mission Solar

Mission Solar

Price

This product can be found on Amazon for around $$$.


Warranty

It includes a 25-year linear warranty.

Features

Mission Solar Energy is designed, engineered, and assembled in the USA. Based in San Antonio, Texas, they design ground and rooftop applications. They offer a variety of solar panel options. We will review the PERC (passivated emitter rear cell) 60 model which has 60 cells. It features an all-black design that is great for residential and commercial projects. It offers a 5600 Pa snow load and 175 mph wind rating making it one of the most efficient solar panels.

Pros

  • Local and domestic vendors

Cons

  • More expensive than others on the market
  • Larger footprint

Silfab

Silfab

Price

This product can be found on Amazon for around $$$.


Warranty

Silfab solar panels come with a 30-year linear warranty and 12-year workmanship warranty.

Features

Offered in a pack of four, the Silfab 340W SLV/WHT 1000V BAA Solar panel has a 38mm frame and offers 340 watts. There are 72 cells in each panel that weigh in at 51 pounds. The frame is made of clear aluminum. Silfab makes their products in North America using automated cell sorting, soldering, glass washing, and has a low defect ratio making it one of the most efficient solar panels.

Pros

  • Efficiency 17.40%
  • Clean source of energy

Cons

  • Most expensive of products reviewed
  • Large size

The Verdict

This list of the most efficient solar panels serves as a place for you to start your search when looking for the right product for your project. There is a variety of companies in the market who offer many options. Solar panels are a large investment, but when you find the right fit for your needs, it will reduce your energy bills and increase the value of your home.