Building services engineering students in Germany

Hi all.

I am organising a weekend away for a group of Buidling Services Engineering students. Main focus would be on renewable energy source if possible but all aspects of engineering taken in.
Am looking for ideas of places/exhibitions etc that would be good for students.
I was thinknig of going to the FH in Munich to there labs.Thought that would be a good idea.
I remember a big machinary exhibiton in Munich also last year some time. Does anyone else remember that. Wondering if it is on every year and if so does anyone know any dates.
Some of the students were thinking of Frankfurt but i dont know anything about Frankfurt. Does anyone know about things to see there.

Thanks if advance for any information

I think you're referring to Bauma which was on this year, but won't be on again until 2010!

Isn't there a geothermal CHP station in Erding? Or any of the little SEW hydro pwer stations?

on 21st October the Stadtwerke München have their 'Energietag'
http://www.swm.de/de/aktuelles/veranstaltu...energietag.html
their power stations (wind, geothermal, biogas) will be open to the public

Also, the Bauzentrum Poing has a lot about energy-saving technologies in buildings
http://www.bauzentrum-poing.de/