Even if the skies are often cloudy in Germany, one thing is crystal clear. Solar energy is thriving here. While already making a noticeable impact in this central European country, the story being told at Intersolar 2007 in Freiburg this week is, "You ain't seen nothing yet." And it's being told in at least 30 languages.

Arriving in Germany by plane, and then traveling to Freiburg in the southwest corner of the country by train, it is immediately obvious that this is a country doing something about its energy future...many of the houses and farms alongside the train tracks sport solar hot water or photovoltaic systems. Solar has definitely gone mainstream here.