Solar panels, specifically bi-facial modules, are growing in popularity. As researchers and scientists continue emphasizing the importance of sustainability on our environment. So more people and companies are implementing ways to manage resources better. That’s by saving money and create renewable methods that aid in improving sustainability.
Out of all the renewable energy resources, solar energy is the most abundant on earth with 173,000 terawatts of solar energy striking the earth continuously, which is why researchers continue to push ahead with solar module testing and progress in this industry.
What are Bifacial Solar Panels?
You’ve probably heard of solar panels but might not be familiar with this type. So, what are bifacial panels anyway?
A bifacial solar panel can collect energy from both sides, hence the “bi” in bifacial. They can come in many designs: framed, frameless, dual-glass, or made with clear back side sheets. Many panels use monocrystalline cells, while others use polycrystalline designs.
In order to develop data in support of bifacial solar panels, many organizations are studying solar tracking technology. One of the leaders in solar tracking technology, Array Technologies, is now testing bifacial solar panels at its lab in New Mexico.
The founder of this organization, Ron Corio, focuses on his team examining the benefits of bifacial panels. Additionally, Array Technologies also wants to implement standards for the industry. Many companies want to acquire several years’ worth of data that may alter our use of solar panels going forward.
Benefits of Bifacial Panels
Bifacial solar panels present numerous benefits over conventional solar panels, which leads to bifacial’s growing popularity.
Since power can be produced from both sides, total energy generation increases. These panels are also more durable because both sides are UV resistant. In addition, the frameless bifacial panels reduce potential-induces of degradation (PID) concerns.
The Balance of System (BOS) costs also reduce with the increase in power generation, leaving a smaller array footprint.
Another benefit of bifacial solar panels is the position of the arrays. Instead of having to install them south facing to generate the ideal output, you can install bifacial panels vertically in an east to west direction.
How are these panels Installed?
The process of installing a bifacial panel depends on its design type. A framed bifacial panel, for example, may be easier to install than a frameless; most traditional mounting systems cater to framed versions panels.
Many bifacial panel manufacturers provide clamps to mount their specific brand of solar panel, so you don’t have to worry about this aspect. For frameless panels, the clamps often feature rubber guards to protect the glass, though you should take special care to avoid damaging the glass from over tightening of the bolts.
When you install bifacial modules on a reflective surface (like a white TPO roof or on the ground with light-colored stones), some bifacial module manufacturers claim up to a 30 percent increase in production from the extra power generated from the rear. Tilting a bifacial module higher up can allow it to produce more power, while bifacial panels mounted flush to a rooftop will block ant reflected light from reaching the back side sheets.
For best performance results, mount them on flat commercial rooftops and ground-mounted arrays to leave more room for tilt and reflected light.
When installing bifacial panels, it’s important to consider how the mounting system can impact their performance as well. Racking systems with support rails will shade back rows of bifacial cells.