New Zealand utility Mercury NZ Ltd (<a href="https://www.nzx.com/companies/MCY" target="_blank">NZE:MCY</a>) said on Wednesday it would build a NZD-287-million (USD 164.5m/EUR 156.8m) wind farm near Dargaville, Northland, bringing its total commitment to new renewable power generation to more than NZD 1 billion over two years.