RWE, the German energy company, has awarded Jennings a three year contract to re-line the Ardda Leat in Dolgarrog. The Ardda Leat was constructed in 1955 from the Afon Ddu valley to the Afon Port Llwyd valley. It is of trapezoidal section and concrete lined which has deteriorated over the last 60 years. The first section of leat to be re-lined is between the Sulphur Mine and Coedty Reservoir, which brings water from the Afon Ddu to Coedty Reservoir. The work will be carried out during the power station outages in the summer months to ease access to remote areas that are severely affected by the winter weather.