The 108 MW Dariali Hydroelectric Project harnesses the Tergi River in Northern Georgia from an elevation of 1734 to 1350 m. It involves a small dam, settling basin and a 2 km long diversion pipeline, followed by a 5 km long TBM bored headrace tunnel to an underground powerhouse with 3 Pelton units. A 400 m long tunnel provides access to the powerhouse and a 500 m long tailrace tunnel conveys the turbine water back to the Tergi River. The services include a feasibility study, tender design and preparation of tender documents, detail design of civil works and review of the design of electromechanical equipment. The work is done in a joint venture with the consulting firm Verkis.