Section 5(4)(b) in The Tamil Nadu Electricity Supply Code, 2004
(b)Where the local bodies neglect / fail to pay any bills in respect of LT services for Public Lighting and Public Water Works, and other services of Local Bodies the belated payment surcharge shall be applicable for the payments made beyond 60 days from the date of demand. In case of payment made beyond 60 days from the date of demand, the belated payment surcharge shall be payable from the day following the 60th day of demand.