On October 1, 2018, IOCL, BPCL & HPCL invited EoI for supplying Compressed Bio Gas (CBG) from plants processing biomass / waste to their retail outlets across the country. The EoI is an ongoing process initially opened till March 31, 2019. Every first day of the month an EoI will be issued and expire at the end of the same month. The same EoI will be repeated every month. As this is an ongoing process of empanelment, there is no fixed date for opening of the EoI by OMCs.