These windows generate more electricity than rooftop solar panels
Developments in Building Integrated Photovoltaics (BIPV), also known as integrated photovoltaics into buildings, are accelerating. Solar panels integrated into windows generate more electricity than roof-mounted installations.
There has been a recent rise in Building Integrated Photovoltaics (BIPV), referring to solar panels integrated into buildings. The latest development in this field comes from the Spanish BIPV manufacturer SolReina. The company’s BIPV panels, integrated into thermal and acoustically insulated glass, can generate more electricity than traditional rooftop installations.
Produces 15% more energy than rooftop installations
SolReina’s solution is presented as a “solar window,” surpassing the conventional definition of a window. These windows consist of panels that provide thermal and acoustic insulation and can also be used on building facades. They utilize tempered glass with high durability, noted for its resistance to mechanical stress and temperature fluctuations.
The front side of the design features tempered solar glass with high transparency, low reflectivity, and low iron content. The panels use crystalline silicon cells and include anti-aging properties such as moisture protection. On the back side, there is also low iron content tempered glass. SolReina mentions that the windows can be adjusted in direction, allowing for angle adjustment based on sunlight. The company can scale the window sizes according to architectural requirements or preferences.
In terms of performance, SolReina is confident. The company claims that a standard solar window can produce between 150 to 225 W/m2 and can reduce the need for electric air conditioning by up to 80% on hot days. The key point is that these systems can generate up to 15% more photovoltaic energy than typical roof installations, likely due to reduced overheating compared to roofs. The windows are currently manufactured and marketed in Spain, with plans to expand across Europe through partnerships.
