Visakhapatnam: Andhra Pradesh Eastern Power Distribution Company Limited ( APEPDCL ) has estimated that it will have to bear an additional burden of nearly Rs 27.53 crore to provide nine hours of free power supply to all 28,056 eligible farmers in Visakhapatnam district, according to discom officials. As per estimates, 5.8 lakh units of electricity is required daily to maintain the nine-hour power supply to all farmers in 37 mandals. In the old seven-hour-supply scheme, the discom used to supply 4.5 lakh units of electricity. It will now have to provide an additional 1.3 lakh units of electricity, said a senior APEPDCL official. The discom purchases one unit of electricity for Rs 4.45 from the power generation companies and supplies it to farmers for free. In the process, the total expenditure of the discom to supply one unit of electricity per day is Rs 5.8, officials said. Accordingly, the additional 1.3 lakh units will cost Rs 7.54 lakh per day and Rs 27.53 crore per year.