Coal should be used judiciously: Piyush Goyal

Tokoyo, Jan 13 (ANI): Minister of State (MoS) for Renewable Energy Piyush Goyal on Wednesday said that pollution out of coal should be reduced to the bearest minimum and coal should be used judiciously. The minister also invited Japan to join the International solar alliance (ISA).Clean coal technology is a collection of technologies to lessen the environmental impact of coal energy generation.