TELK, Transfromers and Electricals Kerala Limited was incorporated in 1963 under an agreement with Government of Kerala, Kerala state Industrial Development Corporation and M/s. Hitachi Limited,  Japan to set up a full fledged unit for designing and manufacturing Extra High Voltage Electrical equipments in India.

TELK set an example by venturing into the area of manufacturing high capacity transformers in India at a time when nation relied mostly on imported equipments to meet its power transmission requirements. 

Located at Angamally, near Cochin in Kerala, the first product rolled out from TELK in 1966. Telk has established its own brand image for quality and reliability. Since 23rd June 2009, Telk is a Joint Venture Company of Govt of Kerala and NTPC Ltd.