Solar power systems with double-sided (bifacial) solar panels — which collect sunlight from two sides instead of one — and single-axis tracking technology that tilts the panels so they can follow the sun are the most cost-effective to date, researchers report June 3rd in the journal Joule.
What is a double sided solar panel?
As the name suggests, it refers to a photovoltaic cell module formed by two pieces of glass and solar cells composed of a composite layer, and the cells are connected in series and connected in parallel to the lead ends. In recent years, double sided glass solar panels are like riding on a rocket, and their popularity is soaring.
The technology behind solar panels continues to evolve and improve. Manufacturers are now able to produce bifacial panels, which feature energy-producing solar cells on both sides of the panel. With two faces capable of absorbing sunlight, bifacial solar panels can be more efficient than traditional monofacial panels – if used appropriately.
Are bifacial solar panels a good investment?
And, as we'll discuss, bifacial panels are also more expensive than traditional single-face panels, which can affect the breakeven point of your investment. Bifacial solar panels can capture light energy on both sides of the panel, whereas monofacial panels (AKA traditional solar panels) only absorb sunlight on the front.
How do bifacial solar panels work?
The design allows solar energy to be captured from both sides, with the back panel achieving an efficiency of 91-93% of the front side. Developed at the US Department of Energy's National Renewable Energy Laboratory (NREL), the bifacial solar cells harvest sunlight that is reflected onto the back of the cells.
What are the different types of solar panels?
Most of the solar panels you see are mono-facial solar panels. Sunlight hits the top face of the solar panel, and it generates electricity. But those aren't the only kind of solar panel that is out there. There's another type – bifacial solar panels. With bifacial panels, an extra part of the solar panel produces electricity – the back face.
Are bifacial panels more energy efficient?
With more surface area available to absorb sunlight, bifacial panels are generally more efficient than traditional monofacial panels. For example, a study by solar panel manufacturer LONGi found that bifacial panels produced 11% more energy than standard panels as part of a ground-mounted installation.