Reji Pillai, CEO, India Smart Grid Forum (ISGF), said that with UEI, “we could enable peer-to-peer (P2P) payments directly between the peers while the energy wheeling charges for the utility can be levied in the electricity bills by the utility”. Unified Energy Interface India: 20 Energy Firms Create Open Energy Network Alliance Called ‘UEI’ for EV Charging via UPI-Like Systems.