Grid-connected power systems
Where a property is connected to a network or grid, electricity from renewable sources can be generated using photovoltaic (solar) arrays, wind turbines, micro-hydro systems and other renewable generation equipment, and connected to the grid through a grid connect inverter (subject to appropriate approvals).

In most cases, renewable energy systems will produce varying amounts of electricity depending on the available resources. For example, solar arrays typically produce the most electricity during the middle of the day. Grid connected systems allow excess electricity generated to be exported to the grid. Electricity can also be imported from the grid, when the output of the renewable energy generating equipment is insufficient.

The installation of a grid-interactive renewable energy system will have a number of direct economic and environmental benefits, including the reduction of energy bills, the ability to sell excess electricity back to the electricity retailer while reducing greenhouse gas emissions.

New Zealand’s Electricity Generation future model with small scale renewable/ distributed generation (SSR/DG)