State-owned Power Grid Corporation's board has approved rasing up to Rs 600 crore through bonds to be issued on private placement basis. "Committee of directors for bonds, in their meeting held today i.e. on 24th March, 2023, have approved the raising of unsecured, non-convertible, non-cumulative, redeemable, taxable POWERGRID Bonds-LXXII (72nd) issue 2022-23 on private placement up to Rs 600 crore by securitisation of cash flows of 10 years i.e. till FY 2032-33 of its operational SPV (special purpose vehicle) viz. 'POWERGRID NM Transmission Ltd' (PNMTL)," a BSE filing stated.