Panasonic said it’s the first time since the last generation to conduct long-term demonstration tests of perovskite-based photovoltaic glass in residential windows. The test in a smart city called Fujisawa will continue till the end of next year. Panasonic’s photovoltaic glass is able to produce electricity while remaining clear and tinted.

A photo of the Panasonic system.

Photovoltaic windows protect against power outages usually common during natural disasters and provide an environment friendly energy supply to homes and offices. The company’s power-generating glass approached mass production in 2020, when Panasonic announced its development.

According to Panasonic, its perovskite photovoltaic glass has the world’s highest efficiency for solar cells, bringing 17,9% to bigger than 800 cm2. In terms of efficiency, the companies’ thin and light perovskite glasses are close to silicon solar panels, but they have advantages like simplicity and poor weight.

In practice, an area of glass very small will be testable. In the experiment-based lab, the company is going to glaze a loggia with photo-glass windows facing south with windows. The diameter of the glazing will be 3876 mm wide and 950 mm high.

Let us add that Panasonic photovoltaic glass is produced by inkjet printing with lasers for engraving. This is one of the main advantages of perovskite compounds which dissolve easily ink for industrial printers. And making inkjet is cheaper, more accessible and cleaner than traditional etching processes and a process for the process of etching silicon substrates allowing traditional photo panels.

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