30,000 volt switching station, Rheidol Hydro...
View of reception room at Rheidol, Rheidol...
The control room, Rheidol Hydro Electric...
Top of number 3 machine spiral casing showing...
Drainage and dewatering pump motors, Rheidol...
Cwm Rheidol power station, 1965
Dinas pressure tunnel, Rheidol Hydro Electric...
Dinas turbine hall, Rheidol Hydro Electric...
Dinas station control panel, Rheidol Hydro...
Main shaft casing, No.1 turbine, Rheidol Hydro...
Dinas Power Station, Rheidol Hydro Electric...
Nant-y-Moch Dinas Tunnel, Rheidol Hydro...
Nant-y-Moch dam and reservoir, Rheidol Hydro...
Nant-y-Moch dam under construction, Rheidol...