Guwahati to get piped gas supply by next year SECTIONS Share Synopsis Rupam Goswami,Chairman of Duliajan Numaligarh pipeline Limited (DNPL), said that the work to bring the gas line from Numaligarh in Upper Assam to Nagaon, is on. “The gas line is expected to start supply by next year in Guwahati,” he said. Getty Images The National Gas Grid Pipeline (Urja Ganga Project) was originally planned for extension from Jagadishpur in UP, to Haldia in WB. GUWAHATI: Guwahati, Northeast India's financial capital, is slated to get piped gas supply by next year. Rupam Goswami,Chairman of Duliajan Numaligarh pipeline Limited (DNPL), said that the work to bring the gas line from Numaligarh in Upper Assam to Nagaon, is on. “The gas line is expected to start supply by next year in Guwahati,” he said.