It depends on a range of things, including your home, how much power you use, and how and when you use it. And while solar is suitable in most parts of New Zealand, it’s a particularly good option in sunnier regions like Northland, Auckland, Nelson, Bay of Plenty and Marlborough.
You get the best return on your investment in solar power if you can use as much as possible of the power you generate. That’s because the price you receive for selling electricity back to the grid is generally lower than the price you pay to buy electricity.
Most solar power is generated during daylight hours, so solar is usually cost-effective if you use a lot of electricity during the day or can store the energy overnight, for example in an electric hot water cylinder. If you’re working from home, you’re charging an electric vehicle, heating a spa pool or similar, solar can be a great option. Shifting your ‘normal’ power consumption e.g. by using timers or setting things like dishwashers or washing machines to run during the day can also increase cost-effectiveness.