CEPI is a number to characterize the environmental quality at a given location. CEPI scores are calculated from time-to-time by the CPCB to identify critically polluted areas and industrial clusters, by monitoring their air, land and water. CEPI Score is an important tool to identify those clusters where industrial development activities have been restricted due to their pollution levels. In 2010, the MoEF imposed a moratorium on the consideration of projects for EC, if they were located in 43 critically polluted areas. It has been reduced to 7 clusters as of September 2013. TPPs cannot be located in those places where the moratorium is imposed.