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Vehicle & Solar Knowledge

What are off-grid & on-grid?

On-grid means your solar system is tied to your local state-owned utility. Being grid-tied (under the net Metering scheme) is beneficial because you don’t have to buy an expensive battery backup system to store any excess energy.

Being off-grid means you are not connected in any way to your grid’s power system or utility company. This is appealing because you are 100% self-sustaining your energy use. However, there are disadvantages because off-grid systems require you to purchase the backup battery.

On Grid Systems usually require:

· Solar panels and an appropriate mounting system.
· Grid-tied solar inverter(s) and monitor(s).
· Solar cables and MC4 connectors.
· AC and DC safety isolator switches, and so on.
· Grounding earth cables and clamps.


Off-Grid Systems. The problem is that in many countries it is either not permitted or not practical to connect on-grid solar power systems to the mains utility grid.

Off Grid Solar Systems do not need to be connected to mains power. As there is no ready source of reserve power, they rely on generators or storage batteries to provide electricity on days when the solar panels generate less electricity than is required, e.g. on cloudy days or at night time. The idea is that at times when the system provides more electricity than required the surplus can be used to recharge the batteries.

Off-Grid Systems normally require:

· Solar panels and a suitable solar mounting system.
· Off-grid solar inverter(s).
· Solar power controller and batteries.
· Solar cables and MC4 connectors.
· AC and DC safety isolator switches, and so on.
· Grounding earth cables and clamps.

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