Dunedin wind farm set to be biggest in the country

Jackets on, shovels out as ground breaks on a $506 million wind farm in the hills west of Dunedin. The Puke Kapo Hau wind farm received fast track approval in July and marks the second stage of the Mahinerangi farm project. Together they're set to become the country's biggest wind farm, generating enough power for the equivalent of about 92,000 homes. Tess Brunton reports.