If you are one of the many people exporting electricity to the grid, chances are you are familiar with the following…
When you export electricity you also get to pay energy taxes and or other grid fees. So even if your net-consumption is zero, you still own taxes. This might not be the case in your country or your specific utilities provider, but it will be the future for most of us.

The graph above is a simplification of typical grid usage for a solar house over the course of 24 hours. At night we consume power from the grid, and at daytime we are exporting. Either way there is power crossing the meter which can potentially cost us money as taxes.
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