Panels installed on the roof convert sunlight into electricity, which provides household power through an inverter. The system can be ‘grid tied’, meaning it is still connected to the network, or ‘off-grid’ meaning all power generated is used or stored in batteries. In a grid tied system, the power company will pay you for excess, unused power generated during the day*, meaning you can build up a credit to buy power back from the power company at night for your electricity use when your panels are not generating.
*In NZ, the power company buy back rate is low and the purchase rate is quite high, so depending on the size of your system and usage, homes could generate enough to “break-even” but solar PV is not generally considered an ‘earner’ when also taking into account the cost to install the system.
Suitable for anyone wanting to generate their own environmentally friendly electricity.