In a BSE filing, the company said: "The Board of Directors of the company at its meeting held on July 2, 2015, has accorded investment approval for Green Energy Corridors: Inter-State Transmission Scheme (ISTS) Part-C at an estimated cost of Rs 2,247.37 crore, with commissioning schedule of 36 months from the date of investment approval."
In April, PGCIL had said its board has approved investment for Green Energy Corridors: Inter-State Transmission Scheme-Part A and B at an estimated cost of Rs 1,479.30 crore and Rs 3,705.61 crore, respectively.
The intra-state transmission component is being implemented by respective states while PGCIL is executing the inter-state part.
It seeks to address intermittency and variability aspects as well as grid integration issues of large-scale renewable energy generation.
PGCIL today fell by almost a per cent to close at Rs 139.95 on BSE.