Section 59(2)(b) in The Electricity (Supply) Act, 1948
(b)where in respect of the Board, a notification has been issued under sub-section (1) of section 12-A, a reasonable sum by way of return on the capital provided by the State Government under sub-section (3) of that section and the amount of the loans (if any) converted by the State Government into capital under sub-section (1) of section 66-A.]