The board of CESC Ltd. has approved the allotment of non-convertible debentures worth Rs 250 crore to Axis Bank.The securities will be allotted on a private placement basis and will mature on April 11, 2030.The coupon rate of the instrument will be 2.67% and the debentures will have a call/put option after three years.Shares of CESC Ltd. closed 2.34% higher at Rs 153.35 apiece on the BSE.