BIPV facade

Soltech Energy has installed a 60 kW solar facade on the wall of a garage in Sweden that hosts 300 EV-charging posts. It features a steel structure to facilitate the flow of air.

A new building at the Helmholtz-Zentrum Berlin (HZB) is being covered with facade CGIS solar panels provided by German manufacturer Avancis. A research team will analyze their performance and special features, including new sensors for incident radiation and heat.

New cadmium telluride solar panels are now available for applications on tall buildings in urban environments. Their efficiency ranges from 15.3% to 18.2%, with 110 W to 450 W of power output.

A French-Italian research group has shown that BIPV facades on buildings can cause a ‘darkening’ effect by reducing light reflectance on nearby installations, dragging down energy production by 11%. The ‘urban heat island effect’ can also weigh on PV system performance, the researchers said.

Japan’s Kaneka and Taisei have designed their T-Green Multi Solar system to be integrated into walls and window surfaces. The system is available in two different versions – a solid type in which PV laminates are turned into vertical exterior panels or walls, and a variant that achieves transparency through striped solar cells that are integrated into window glass.

In a recent conversation with pv magazine Roland Valckenborg, business developer and project manager at the Netherlands Organisation for Applied Scientific Research (TNO), has described the results of a multi-year testing program for colored BIPV modules. Just a few years ago, it it was thought that power yield could be up to 50% lower than conventional panels, but tests have shown a difference of just 10%. Valckenborg says that losses can vary depending on the color of a panel.

The three-meter prototype consists of nine panels based on an aluminum compound. The PV elements of the facade can be tilted to capture more sunlight.