Are there any companies doing anything significant in the field of alternative energy?

Question

I'm not talking about BD, CC (carbon-credits), etc. but something totally different yet commercially-feasible and practical.

Answer 1

watch a movie called "who killed the electric car".......its should answer this question best.....also their is one company that has developed the 1st water powered car......check it out on youtube..

Answer 2

There's a company in Germany that is doing research on storage systems to store renewable energy like solar or wind. When it comes out, I'm sure renewable energy will be booming in utilities!