Green roofs and photovoltaic

New researches on Green roofs and pv are done in Japan and Germany in 2011.

Summary: 25 degree Celsius is the reference temperature of PV-cells. This temperature garanties the highest efficiency. Green roofs can cool down PV – Cells in summer and can enhance the energy output a few percentage. At least this higher amount of energy helps to finance the green roof under the PV-cells.
The second advantage: Green roofs helps to fix PV constructions without any penetration on a roof.

This was a theme on a WGIN - lecture tour in February 2010 in Australia, organized by GINA.

Further readings

2007 Köhler M: Positive Interaction Between PV-Systems and Extensive Green roofs .
In: GRHC(ed.) The Green Roof Infrastructure Monitor.
2002 Köhler M, Schmidt M, Laar M, Wachsmann U, Krauter S: Photovoltaik-Panels
on Greened roofs. Rio 02 - World Climate & Energy Event, Proc. 151 - 158 Brazil


WGIN Working group

Hajime Koshimizu
Short story JapanJapan
Manfred Koehler
Short story GermanyGermany