Electricity consumption of your heat pumps - comparison values?

2 drillings of approximately 75 m each. Subsoil is limestone/dolomite (after about 2 m of soil).

We have KFW 55 with 160sqm, but an air-water heat pump. Even for us the second meter didn’t pay off, for you, due to the probably even lower consumption, it probably won’t pay off either. Just calculate yourself with the numbers on site and don’t forget the additional basic fee per month. Even if a photovoltaic system is supposed to be installed later, having two meters makes little sense.

Of course, this is a simple calculation. For us it was worth it:

2019 - 2700 kWh at heat pump tariff = 2700*0.18 = 486 + 90 = 576 euros Without heat pump tariff = 2700*0.28 = 756 euros

And of course the second meter can also be worthwhile with a photovoltaic system. We have had one on the roof since August and kept the meter. Here, a complicated measuring concept must be implemented, which is not desired by every grid operator.

Regards

Of course, that is a simple calculation. For us, it was worthwhile:

2019 - 2700 kWh under the heat pump tariff = 2700*0.18 = 486 + 90 = 576 euros
Without the heat pump tariff = 2700*0.28 = 756 euros

You forget that the thread is already 2 years old. Currently, the price difference between heat pump and household electricity is relatively large. But that fluctuates. A few years ago, in my region it was sometimes only 2 cents.

And of course the second meter can also be worthwhile with a photovoltaic system. We have had one on the roof since August and kept the meter. Here, a complicated measurement concept has to be implemented, which is not desired by every network operator.

Regards

Does that necessarily bind both meters to the same electricity provider?

You forget that the thread is already 2 years old. Currently, the price difference between heat pump electricity and household electricity is relatively large. But that fluctuates. A few years ago, in my region, it was sometimes only 2 cents.

UPS, I didn't pay attention to the date, sorry. Admittedly, the difference is quite drastic for us. Even the heating engineer was surprised by it.

Does that force you to link both meters to the same electricity provider?

That is a good question that I still need to deal with. Especially now that the photovoltaic system is running. Currently, it is the same provider, but also the cheapest one available here.

195 sqm, KFW 55, controlled residential ventilation with heat recovery, brine-water heat pump 6.1 kW non-modulating with one borehole 120m, 4 people with rather higher hot water consumption, heating element 0 hours runtime, resulted in 2500 kWh electricity in 2019 or calculated 54€ per month. Only household electricity, no heat pump tariff. Actual consumption costs lower due to photovoltaic.
I am satisfied.

The annual performance factor is only just at 4. This is due to the high hot water demand. In summer the APF was only 2.4, while during the heating period it was 5.
So there is still potential.