Christian Stalberg
[image_frame align="left" height="300" width="300" prettyphoto="false"]http://permacultureconvergence.com.webserver.vera.asdf456.com/wp-content/uploads/2016/08/Christian-Stalberg.jpg[/image_frame] Christian Stalberg currently manages Enersim, Ltd., a building energy performance simulation and training company. His interest in sustainability, i.e. ecovillages, comes from having grown up off the grid and…