This project involved a 132/33/11 kV substation as part of the Derbendikhan Hydropower Project. The substation receives 132 kV power supply from the hydropower station and other 132 kV sources and supplies power at 132 kV, 33 kV and 11 kV to local areas.

The substation building included a cable gallery basement of 30 metres by 60 metres. The ground floor area of 36 metres by 28 metres housed the 132 kV gas insulated switchgear and the 132/33/11 kV control panels and switchgears. The building heights of 7 metres and 9 metres above ground level were designed to minimise rock excavation and support faster construction. The switchyard included transformer foundations and other switchyard foundations. A package sewage treatment plant was provided for domestic waste, and provisions were made to separate transformer oil in collection pits without mixing with cable trench drains.

TCE's Scope