Most commercially available roof solar photovoltaic panels with efficiency between 18% and 20% are currently available. Although there are also extreme products that are up to 40% efficient, their costs are also quite high. The good news is that Swiss start-up company Insolight is developing a thin plastic layer that can be placed on top, designed to redirect sunlight more efficiently onto a small but highly efficient solar panel. Although many scientists are busy improving the efficiency of solar panels themselves, there are other improvements that are easily overlooked.

Insolight's solution can boost efficiency to a record 36.4%.

In addition to improving the efficiency of solar photovoltaic panels, we can also start from improving the efficiency of solar light convergence. However, most existing condenser methods are very cumbersome and cumbersome. For example, they need to constantly adjust the direction of light.

In order to reduce costs, Insolight's strategy is to use the existing high-efficiency solar panels, coupled with additional devices that can attract sunlight in all directions to improve efficiency. (Obviously, 42% efficiency solar panels are still expensive, and the space industry uses more)

This injection molded array board with many transparent semi-circular lenslets is like a small magnifier network, which is aligned with a small high-performance solar cell area (only a few square millimeters) on the substrate.

The top lenslet directs sunlight to a very small (but very high performance) solar panel.

Put on the metal frame, according to the sensor tracking the position of the sun, it only needs to move a few millimeters a day, it can use the sun to generate electricity (no need to consider the incident angle of sunlight), which is particularly important for high latitudes.

The Fraunhofer Institute in Germany has independently verified the performance of a prototype. Insolight claims that its efficiency has reached 36.4%, which is about twice that of conventional solar panels of the same size. The potential for deployment on rooftops is very large.

The prototype has now turned to field testing, and Insolight also hopes to be able to enter the market as soon as possible. It is not different from traditional solar panels in size. It can be installed in a standard way.

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