This project involved construction of a 220 kV transmission line from Bhira to Dharavi, replacing an existing 110 kV double circuit line. The new system facilitated evacuation of additional generation of 150 MW from a pumped storage scheme, in addition to an existing installed generating capacity of 150 MW.

The line included a 220 kV double circuit configuration throughout 100 kilometres on multi circuit towers, and a 110 kV double circuit configuration in some portions covering 40 kilometres. The conductor configuration included single moose ACSR conductor per phase per circuit. The project incorporated fibre optic ground wire as earthwire and communication link.

Special engineering features included narrow base towers for densely populated areas, extra high towers with long spans up to 700 metres for creek crossings to allow navigation below the lines, pile foundations for creek and slush areas, mat type foundations with special rubble soiling in slush expansive clay areas, and rock drilled anchor rod grouted foundations for rocky mountainous terrain.

TCE's Scope