May 6th, 2018 | by Zachary Shahan
Sonnen is one of our favorite cleantech leaders. It is great at innovation, leadership, and vision. Last month, I published a January interview with sonnen CEO and co-founder Christoph Ostermann. The good folks at The Beam went and created a transcript of it. If you can't be bothered to watch a video but would like to read it, here you go!