The 96 MW Trevallyn Power Development is located in the state of Tasmania in Australia. It is owned and operated by Hydro Tasmania.
The assessment was carried out over the period August to October 2011 using the operation tool of the Hydropower Sustainability Assessment Protocol. The Protocol assesses 20 topics and assigns scores for each between 1 and 5, with 5 representing Proven Best Practice and 3 representing Basic Good Practice.
Hydro Tasmania’s governance and management is generally of a high international standard, and Trevallyn and its impacts are well-managed. Hydro Tasmania as a company responds well to most opportunities to engage with partners to minimise impacts.
Trevallyn meets at least Basic Good Practice (a score of 3) for all but one topic. The exception is 0-15, Biodiversity and Invasive Species (score of 2), owing to the cessation of monitoring of the effectiveness of a measure taken partly with the objective of improving conditions for biodiversity downstream of the dam.