The Electricity Authority says New Zealand needs to increase generation capacity by 400-500 megawatts each year 'til 2050.
The Electricity Authority has released a consultation paper (external link), putting forward a number of ideas for itself and other government entities.
The country's electricity regulator has laid out proposals to aid investment in renewable generation and to promote competition in the wholesale electricity market.
Power systems consultant Bryan Leyland spoke to Michael Cropp.
