WTH is a Solar Wall?

Toyota Manufacturing of France is the first industrial site to incorporate a solar wall. It appears to be a low cost industrial site heating element that is warmed by the sun :) Toyota Manufacturing France (TMMF) inaugurated a solar installation on the wall of its facility in Valenciennes, France. According to Toyota, this technology will contribute to reducing CO2 emissions from the plant. TMMF is one of just five plants designated by Toyota worldwide to develop pioneering initiatives towards sustainable manufacturing.