Who Does What?
There are four groups in the New Zealand electricity sector.
Generators produce electricity at various hydro, gas, coal, geothermal and wind plants throughout New Zealand.
Transpower transmits the electricity produced by generators. They operate the national grid - the system of high voltage power lines that allow power stations to send electricity around the country.
Network companies (Distribution or Lines companies), own the power lines and networks in local areas that connect to the national grid and deliver power to businesses and homes. Horizon Energy is one of New Zealand's 28 electricity distribution companies and is consistently ranked amongst the top 10 for financial performance.
Electricity Retailers sell electricity to business and residential users. Customers can buy electricity from any retailer they choose.