Patrick Begg, Rural Enterprises Director at the National Trust, said: “We have committed to meeting half of our energy needs from renewable sources by 2020, reducing our overall energy use by 20%. We are playing our part in tackling climate change, which is a huge threat to special places.
“The National Trust has already constructed four hydro schemes in Snowdonia and the Lake District, under our renewable energy programme. These projects generate thousands of pounds for conservation work in our upland landscapes.
“We consult widely with conservationists and the local community when considering when and where to install hydro schemes of our own. If the project is incompatible with or undermines the cultural or natural significance of a place, we simply scrap the project.
“We take great care to reduce the impact of our hydro schemes on the landscape, where possible using local materials for construction work and siting cabling and pipework underground. It is now two years on from the installation of the Hafod-y-Llan hydro and it is hard to tell that any construction took place at all.”