Phonepe Electricity bill payment offer: Now get flat 50% cashback when you do pay electricity bill on Phonepe App. Maximum cashback amount per customer is 75 Rs and it must be your first ever electricity bill payment on Phonepe. No minimum transaction amount required. This Phonepe electricity bill offer is valid only if the recharge is paid through UPI or Credit or Debit Card. Offer valid from 10 March 2018 to 31 March 2018.