Only when we convinced ourselves of being able to reach the economic goals, making the harnessing of very low head sites attractive, had the decision to venture into the VLH project been made.

The decision criteria are based on a ratio between the amount of the global investment and the estimated turnover of hydroelectric power plants. The considered costs include provisions for preliminary studies, land and civil engineering construction costs. In terms of electromechanical equipments (turbo-generator unit and associated electric equipments), this goal turns to be an investment to annual turnover ratio between 5 to 7 for all the equipments.

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