As the economic engine of the state, Guwahati hosts the headquarters and major regional offices for several large enterprises:
* **Oil India Limited (OIL):** Maintains its massive Pipeline Headquarters (PHQ) in Narengi. * **Indian Oil Corporation Limited (IOCL):** Operates the Guwahati Refinery, the country's first public sector refinery, established in Noonmati. * **North Eastern Development Finance Corporation Ltd. (NEDFi):** Headquartered here, providing financial assistance to micro, small, medium, and large enterprises in the region. * **Assam Power Distribution Company Limited (APDCL):** State power utility headquartered in the city. * **Guwahati Tea Auction Center (GTAC):** While not a traditional corporation, it is one of the world's most vital nodal agencies for the tea trade.
