The turbine maker won the 20-year contract for the 16.5MW Villonaco project at a tender held for Chinese companies last year through Ecuador’s electricity company, Celec.

It is likely to be financed as part of a $2bn Chinese loan for a package of energy projects, but mystery surrounds the wind farm contract.

China has become the largest source of financing to Ecuador since it defaulted on its global bonds in 2008.