Buller's most controversial electricity generation proposal heads to the Environment Court in September.
The court will begin hearing appeals against Meridian Energy's proposed Mokihinui dam on September 10 - almost two and a half years after Meridian gained resource consent from a Coast council hearing committee.
The appeal is scheduled to last three months, with just the first fortnight held in Westport. The remainder will be held in Christchurch.
The appellants are Forest & Bird (F&B), the Department of Conservation, West Coast Environment Network and Whitewater New Zealand.
Interested parties include Buller Electricity, Alpine Energy, Electricity Ashburton and Orion New Zealand.