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Grid Connect
Grid interactive systems eliminate the need for a battery backup for when the sun doesn't shine. In effect, the grid serves as your battery. This means that maintenance costs for your system will be less. It should be noted that without battery storage a grid connected system will shut down when there is no power on the grid.
Generally, if you have a grid-connected house with a structurally sound north-facing roof, then you can install a grid-interactive PV system, providing your power utility allows it. In Australia, a growing number of electricity utilities are supportive of grid-interactive systems, and will credit you for your electricity if the amount you generate exceeds the amount you use during the billing period.
