World is asumming a big deal: to change energetic model, from a consum based in fosil fuels, to a model based in an energy mix where renewable energies have a big part. Fosil fuels are limitated and they will soon be exhausted. Sun however will go on shining during 5 millions of years more. Solar energy is future, and our concentrator is the future of solar energy, because it concentrates solar energy in electricity and heat.