The Arnold Power Station is a hydroelectric facility fed from Lake Brunner

Lake Brunner

Lake Brunner is the largest lake in the northwestern South Island of New Zealand, covering an area of 40 km². The lake's outflow is the Arnold River, a tributary of the Grey River. The lake lies 31 kilometres to the southeast of Greymouth...

 on the Arnold River

Arnold River, New Zealand

The Arnold River is located in the west of New Zealand's South Island. It is the outflow of Lake Brunner, which it links with the Grey River. The Arnold River flows northwest for 20 kilometres, joining the Grey immediately above the town of Brunner, some 15 kilometres from the Tasman Sea...

 in West Coast

West Coast, New Zealand

The West Coast is one of the administrative regions of New Zealand, located on the west coast of the South Island, and is one of the more remote and most sparsely populated areas of the country. It is made up of three districts: Buller, Grey and Westland...

, New Zealand

New Zealand

New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

, owned and operated by TrustPower

TrustPower

TrustPower Limited is a New Zealand electricity generation and electricity retailing company, listed on the New Zealand stock exchange.TrustPower is New Zealand's fifth largest electricity generator and the fourth largest electricity retailer , serving 260,000 customers throughout New Zealand...

. The plant is rated at 3 MW and has an average annual output of 25 GWh.

Development

TrustPower

TrustPower

TrustPower Limited is a New Zealand electricity generation and electricity retailing company, listed on the New Zealand stock exchange.TrustPower is New Zealand's fifth largest electricity generator and the fourth largest electricity retailer , serving 260,000 customers throughout New Zealand...

 is developing a new hydroelectric power station at Arnold. Output is to be 46 MW with average annual generation of 220 GWh. Consents for this project were granted by the Grey District

Grey District

Grey District Council in the West Coast region of New Zealand is a municipality that covers Greymouth, Runanga, Blackball, Cobden and settlements along the Grey River. It has a land area of 3,516.48 km²...

and West Coast Regional Councils in November 2008.