New Delhi, Aug. 21 -- India is working on a new scheme to support domestic polysilicon manufacturing as it targets at least 30 gigawatts of capacity addition by 2030, with a polysilicon plant along with metallurgical-grade silicon requiring an investment of around Rs 850 crore per gigawatt, Renewable Energy Secretary Santosh Kumar Sarangi said on Friday.

Sarangi said that since the capacity expected to come up under the existing Production Linked Incentive (PLI) scheme for polysilicon would be limited, the government would work on a separate support mechanism. The details of the proposed scheme, including the subsidy amount, are still being worked out, he said.

"The first one was a PLI scheme where polysilicon, wafers, cells and modules...