Sten Bergman is a Owner at Stonepower Ab. He possess expertise in energy, climate change, energy efficiency, renewable energy, sustainable development and 15 more skills. Colleagues describe him as "Sten and I became friends and colleagues instantly when we met the first time in September 1990 in Tokyo. We matched and matches mentally and businessmindedly. We wrote up a joint Sweden-Finland manual on Technology Market Japan, which was immediately sold out. Sten's strengths are unconventional innovative thinking in general and a high of professionality in his expertise areas - and his humanity. I regard his person and integrity very much. Tom Grahn" and "Sten is a well focussed and creative person who does not shun difficulties. I have had the honor of working together with Sten both within the same organisation and in different organisations, and in both cases he has stood out among the crowd as the person with a strategic view, able to filter out inessentials from essentials. I can truthfully recommend Sten to anyone who needs a high quality advisor."