Longi double glass solar panels, also known as bifacial solar panels, are a type of photovoltaic (PV) solar panel that has glass on both sides, allowing them to capture sunlight from both the front and rear sides. Here's how they work.

Front-Side Absorption

Similar to conventional solar panels, double glass solar panels have photovoltaic cells on the front side that capture sunlight and turn it into power. When photons from sunlight impact these cells, which are commonly constructed of silicon-based materials, they release electrons and produce an electric current.

Rear-Side Reflection

Double glass panels have a back side that is intended to catch sunlight that is reflected off of nearby objects like the ground, buildings, or other nearby structures. This reflected sunlight can be used to produce more electricity, so it is not squandered. Usually, the rear glass is coated to improve light absorption and decrease reflection losses.

Longi Bifacial Solar Panel

The efficiency of double glass solar panels is often higher than that of traditional single-sided solar panels because they can capture both direct sunlight and reflected light. The amount of additional energy produced by the rear side depends on various factors, including the reflectivity of the surroundings and the angle and orientation of the panels.

Mounting and Installation

To maximize the benefits of bifacial panels, they are often mounted on specialized racks or structures that allow for proper elevation and positioning. By adjusting the tilt and orientation of the panels, you can optimize their performance to capture more sunlight from both sides.

Monitoring and Control

Double glass solar panels are often equipped with monitoring systems that track their energy production from both sides. This data can be used to fine-tune the panel's positioning and optimize energy generation.

Longi solar panel double glass are particularly useful in environments with high reflectivity, such as snowy areas, near water bodies, or buildings with reflective surfaces. However, their cost may be higher compared to traditional solar panels, so the decision to use them depends on factors like location, budget, and expected energy output.