Are Bifacial Solar Panels More Energy Efficient Than Regular Solar Panels?

Solar power is the way of the future. It cuts down on pollution, and it allows owners to save considerably on their energy bills. As such, people and companies are constantly looking for ways to use solar more efficiently.

Bifacial panels are one way to make the most of your solar energy. Unlike regular solar panels that use one side of the panel to transform sunlight into energy, bifacial panels use both their top and bottom sides. This makes them up to 27% more efficient than their counterparts.

How Do Bifacial Solar Panels Work?  

Bifacial solar panels have solar cells on the top and rear of the panel. The top solar cells face the sun and absorb certain wavelengths acting much like a conventional panel.

The bottom solar cells absorb albedo light, or light reflected off the ground. The effect will work best if the underside is painted a light color like white or silver as these are optimal for reflecting. Integrating superior silicon in monocrystalline cells will also add to the efficiency.

Bifacials also convert best when angled off the roof or ground so both sides interact with light. This varies from regular solar panels that are installed parallel to the roof.

How Efficient are Bifacial Solar Panels?

So how much better are bifacial solar panels than monofacial solar panels at converting solar energy to electricity?

Some may think the answer is 50%. After all, with two sides instead of one available to convert, wouldn’t that double the output?

Well, the truth is, because the bottom converts light reflecting off the ground as opposed to direct sunlight, the increase in efficiency isn’t that great, but it’s still pretty impressive. A 2018 study by LONGi Solar showed that bifacials can increase efficiency by 11%.

However, if you combine a bifacial with a solar tracking system that continuously tilts solar cells towards the sun, the increase can be as high as 27%.

What’s more, because bifacial panels are more efficient in powering a home, you need less of them. This cuts back on expenses making the prices competitive with monofacial panels which are typically cheaper per unit. This also makes them an ideal solution for homeowners with limited space for installation.

What Companies Manufacture Bifacial Solar Panels?

If you are looking to install bifacial solar panels in your home, here’s a list of some reputable brands that manufacture them.

·      Amerisolar: Amerisolar is based in California and offers modules made in the U.S. and China with offices around the world

·      Silfab Solar: This North American manufacturer commits to onsite sustainability and end of life recycling. Contact the company to find local distributors.

·      Sunpreme: Based in California, Sunpreme products are manufactured in China and include ground-mount systems with 3 daily peaks. The company has sales partners worldwide.

Solar power is a cost-effective way to help the world reach its environmental goals. Bifacial panels increase efficiency making them a preferred choice for some businesses and homeowners. Will you be adding them to your rooftop?