Rooftop solar in New Zealand typically costs about NZD 3,240 per kW installed, and household electricity is around NZD 0.425 per kWh. The average sunshine is about 3.9 peak sun hours a day.
As a rough example, a 5 kW home system would cost about NZD 18,630, make around 5,338 kWh a year, and save about NZD 2,269 a year. That is a payback of roughly 8.2 years.
Rooftop solar
For homes and businesses. Size, cost, savings and payback.
Open rooftop calculatorSolar plant
For larger projects. Project returns and break-even price.
Open plant calculatorThese are typical estimates, not quotes. Replace them with real quotes before you decide anything.