The Board of Directors has approved the proposal to raise Rs 13,000 crore through issuance of bonds, Power Grid said in a BSE filing.
The funds to finance the company's various expansion projects will be raised from domestic as well as external sources through issuance of tax-free bonds under private placement in 2015-16, the filing said.
Last month, Power Grid Corporation Board had approved total investment of Rs 1,481 crore in its various projects to be commissioned in the next 2-3 years.
The state-run firm is in discussions with power and finance ministries as well as the World Bank regarding funding assistance of transmission systems for evacuation of power from the solar parks.
Shares of the company closed Rs 154.25, 0.98 per cent on the BSE.