Blue Collar Builders

Professor Norbert’s Heliodons – Blue Collar Builders

Thump'r of Blue Collar Builders interviews Professor Norbert Lechner about Heliodons at the 2014 North American InterSolar Conference @ the Moscone Center in San Francisco, CA. Norbert speaks of "low hanging fruit" for energy efficiency.

© 2020 Blue Collar Builders

Theme by Anders Norén