While the major solar energy companies are expanding rapidly as the solar industry grew by almost 150% in 2010,a number of non-solar MNCs have gotten into this sector.The massive growth of solar industry which has been vastly underestimated by policymaker and analysts have not been hidden from these giant companies.While a number of these companies have been present since a long time,some are entering the growing solar energy field for the first time.Some like BP have lost the plot and become minor players despite being top companies a few years ago.Shell has totally left the solar energy field selling its plant to Motech.Asian conglomerates and semiconductor companies have been the most aggressive in entering this area.Chemical companies too have shown interest in building polysilicon plants which build on their core competence.Others have entered the Solar Thermal Energy Field which reinforces their traditional strengths in building power plants and EPC work.Here is list of the top non-solar companies entering the solar sector.