BHEL has further upgraded its facilities to supply steam turbines for Nuclear Power stations up to 700 MW
capacities being set up by Govt. of India. From the above we can conclude that there are many technologies in the
world which can be collectively called ``Clean technologies’’. These are characterized by low to Zero Emissions &
pollutions & therefore environment friendly. Because of their clean nature these newer technologies like Wind,
Tidal, and Solar & Nuclear have also gained major share of the grid in many countries However, there is now a
ongoing debate both in favor of & against these Clean technologies. These technologies are characterized by higher
capital investment & longer pay back periods. Also, these are site specific & always cannot be set up near
consumption centers. Hence their use till date has been limited to those countries which have a good financial
position or those wherein the demand for clean technologies has surpassed the negative aspects of these
technologies. One clear common factor that emerges from the above technologies is the Steam Turbine, which is an
important part of most of the above. Therefore the world focus has again shifted to further development of Steam
turbines based power plants as these are not very capital expensive, are relatively efficient & have a long & reliable
service life