The Anafon Hydro is a high-head, run-of-river scheme.
A low weir feeds water into a buried 3 km pipe. The pipeline descends a total of 230 vertical metres, initially following the northern bank of the river which it crosses on a pipe bridge to the southern bank before entering the Coedydd Aber Forest. Here, it follows the forest track down to the turbine house located just inside the entrance to the Aber Falls National Nature Reserve.
The maximum power output is 270 KW but output is subject to variation in the flow of water in the river. Power produced by the turbine is exported to the National Grid via a new line under the river to existing power lines approximately 150 m from the turbine house. This required an upgrade of the existing lines from the substation in the village about 1 km below the connection point.
A full feasibility study was conducted by John Howarth (John Howarth Hydropower Services), Dr Rod Gritten (Gritten Ecology) and subcontracted specialists. The resulting Environmental Statement was the basis for applications to Natural Resources Wales (NRW) for abstraction and impoundment licences and to the Eryri (Snowdonia) National Park Planning Authority. Planning consent was received in December 2013 and the Abstraction and Impoundment licences were issued in July 2014.