BGCL is a joint venture of GAIL (India) Limited and Greater Calcutta Gas Supply Corporation Limited (GCGSCL), a company of GoWB incorporated as a Government Company on 04.01.2019 to develop City Gas Distribution (CGD) Network in Kolkata ( CGD network in Kolkata city and parts of adjoining districts of North 24 Parganas, south 24 Paraganas, Howrah, Hooghly and Nadia) to cater gas supply to customers in the domestic, transport, and commercial sectors. Kolkata CGD project is a part of prestigious URJA Ganga Pipeline Project.