CrazyChris
2020-01-07 14:05:27
- #1
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Do not connect the heat pump to a separate electricity meter, so do not use a heat pump tariff, and the photovoltaic system automatically supplies all consumers in the house, including the heat pump. You can schedule the hot water production in summer during the day using a timer. This way, for more than 6 months a year, you heat the domestic hot water with electricity from your own roof on 95% of the days.
Omitting the heat pump meter is not necessarily required. With cascade metering, it is possible to keep it and use the photovoltaic electricity both for household electricity and for the heat pump. The basic fee of the second meter is usually compensated by the favorable tariff in the winter months.
Most grid operators now allow such cascade metering.
Google ComMetering and go to their website under Downloads. There is an example calculator that you can use to determine whether it is worthwhile.