There is a need for granting renewable energy status for co-generation of power through waste-heat recovery by cement plants, according to NA Vishwanathan, Secretary-General, Cement Manufacturers Association (CMA). In his special address at the 9th edition of Green Cementech 2013, the CMA functionary said Indian cements plants are trend-setters in energy conservation measures. India is the second largest producer of cement in the world after China, with 248 million tonn es produce in 2011-12, he said.