Power use from solar panels

When a domestic solar system is installed, the DNO supply and inverter supply are physically connected in the same terminal block, supplying the house load.

When the sun is shining and/or the batteries able, the power controller of the solar power system will ensure the load of the house is supplied (up to its limit)

If the solar system has the capacity to supply the house load, what prevents the DNO supply from supplying power to the house load as well (an thus the DNO charging), as the two supplies are connected?

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0 Simon Barker 3 months ago

The solar inverter synchronizes itself to the incoming mains. Then when the sun comes out, it adjusts its output phase and voltage to ensure it's pushing out as much current as it can.

Then Kirchhoff's Current Law sorts the rest. That law states that the total current into any node must equal the total current going out. Which is common sense when you think about it. One of those nodes will be the junction where the incoming grid mains, the solar output and the supply to the main consumer unit all meet.
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0 Simon Barker 3 months ago

The solar inverter synchronizes itself to the incoming mains. Then when the sun comes out, it adjusts its output phase and voltage to ensure it's pushing out as much current as it can.

Then Kirchhoff's Current Law sorts the rest. That law states that the total current into any node must equal the total current going out. Which is common sense when you think about it. One of those nodes will be the junction where the incoming grid mains, the solar output and the supply to the main consumer unit all meet.
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Power use from solar panels

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