The aim of the Coca Codo Sinclair project is to realise a hydroelectric power station with a capacity of up to 1500 MW on the Coca River in Ecuador by 2015. The contract is worth a total of USD 1.7 billion. The project will receive 85 % of its finance from China and 15 % from Ecuador. This makes the power plant the most expensive project in the history of Ecuador.

At the heart of the project is a 25 km long headrace tunnel, which will be excavated across the jungle with 2 TBMs. The first tunnel is 14 km long, and the second is 11 km long. Marti Technik AG is responsible for the fully automatic control of the material flow at both galleries, From the TBMs to the temporary dump site. The system was handed over in 2013.

Tunnel excavation
2 Herrenknecht tunnel boring machines
Diameter: 8.9 m
Gallery 1 length: 14 km
Gallery 2 length: 11 km

Conveyor belt system:
Tunnel conveyor: 1 × 11 km, 1 × 14 km
External conveyors: 90 m + 175 m
Conveying capacity: 1000 t/h
Discharge volume: 2500 – 4000 m3
Reversible belt: each 20 m