The New Zealand government’s board of inquiry has given the go-ahead for the country’s biggest wind farm.

The 168-turbine wind farm. called "Hauauru ma raki". will generate 504 megawatts of power. The site runs over approximately 50 kilometres, from 4 kilometres south of Port Waikato to about 10 kilometres north of Raglan.

The project is a joint venture between publicly listed New Zealand energy company Contact Energy and the wind development company Wind Farm Group.

The Environment Secretary, Dr Paul Reynolds, said the consent included conditions to protect the local environment, including noise limits during both the construction and operation of the wind farm. Turbines will have a maximum hub height of 100 metres and three blades, with each blade being no longer than 50 metres.