Ystradffin Hydropower Project

Hydro Electric Development Ltd (HED Ltd) has won planning permission for a new hydropower development on the Afon Twyi in Carmarthenshire. By harnessing the power of the Afon Twyi approximately 1.6 km downstream of the Llyn Brianne Reservoir and dam, the project has the potential to produce 1.8 MW (9000 MWh a year) electricity. The electricity generated will be fed into the local National Grid network and will provide clean renewable energy to the mid-Wales region.

Harnessing the power of the Afon Twyi has the potential to produce 9000MWh of clean renewable energy each year

A study was undertaken to identify key issues associated with the proposed scheme to define the scope of the Environmental Statement (ES) and the parameters that would require further investigation as part of the planning process. Environment Systems’ Ecology Services team provided the baseline ecological survey including Extended Phase 1 Habitat Survey, National vegetation Classification (NVC), Lower plants survey, breeding bird surveys, otter and water vole surveys, badger survey, and bat surveys. The team also undertook the Ecological Impact Assessment (EcIA) and prepared the Nature Conservation chapter of the Environmental Statement to support the wider Environmental Impact Assessment.

The construction phase of the project is expected to start in 2018.