ᐅ 2. Is it worthwhile to have a separate meter for the heat pump? According to the calculations, yes—but is that really the case?

Isn't the second meter pointless when you have a photovoltaic system? Anything measured by the second meter shouldn't be self-consumption, right?

That seems really tight. Saving €50 per year is not much. As soon as any of the prices change, it most likely won’t be cost-effective anymore.

In general, your household electricity seems relatively expensive to me. We switch electricity providers once a year if there are cheaper offers available, so we always get the best price. Currently, it’s 25.37 cents per kWh. That is cheaper than your heat pump rate.

Is your annual consumption of 5,000 kWh correct? With a similar house size and 2 people, we use almost 7,000 kWh. We also have quite a lot of technology and already had a consumption of 3,000 kWh in our old rental apartment. The heat pump consumes about 3,500 kWh per year for us. Still, 5,000 kWh seems quite low for an entire single-family house.

nordanney schrieb:

Then you also have to factor in the bonus to make a fair comparison.
Is there a bonus for heat pump electricity as well? Without that, you're already at 29.1 cents if I include the basic fee.

You’re right, I should include the bonus. If I subtract the 250 € (euros), the second meter wouldn’t be worth it anymore. There is also a bonus for the heat pump tariff, which is 60 €. I took 25 cents for heat pump electricity as a rough average after briefly checking on Check24.
I also forgot to mention something earlier. I wanted to say that I would NOT choose future contracts with bonuses anymore.

jrth2151 schrieb:

That’s really quite tight. Saving €50 per year isn’t much. As soon as one of the prices changes, it probably won’t be worth it anymore.
In general, your household electricity seems quite expensive to me. We switch electricity providers once a year if there are cheaper offers and always get the best price. Currently 25.37 cents per kWh. That’s cheaper than your heat pump tariff.
Are you sure about the 5,000 kWh annual consumption? For the same house size and 2 people, we use almost 7,000 kWh. We do have quite a bit of technology and even in our old rental apartment, we consumed 3,000 kWh. The heat pump uses about 3,500 kWh per year for us. Still, 5,000 kWh seems quite low for a detached house.

The price is currently a bit higher because I have been switching once a year so far and always choosing contracts with bonuses. This contract includes a €250 bonus. But in future, I will no longer do that and instead select cheaper contracts.
The consumption of just under 5,000 kilowatt hours is correct and has stabilized since the second year in our house with 2 people. The first year was 6,000. And that despite having a ventilation system with heat recovery (a little over €70 per year), and both of us working from home a lot. Otherwise, we are very economical. For example, PlayStation or similar devices are unplugged when not in use.

Tx-25 schrieb:

You are right, I should include the bonus in the calculation. If I subtract the 250 € (euros), the second meter would no longer be worthwhile. There is also a bonus for the heat pump tariff. This is 60 € (euros). I took 25 cents for heat pump electricity as a golden ratio after a brief look at Check24.

Then the issue should be settled—at least from a calculation standpoint. Not to mention the increased effort with two meters, the appropriate metering concept for using photovoltaics for both meters, and possibly the financial costs involved.
I would only go with one meter (and have been doing so for a long time). It has never been worthwhile in my region (northern NRW/Lower Rhine).

I also have only one meter. In our area (Mittelsachsen), the difference between household electricity and heat pump electricity is 3 cents/kWh. In the end, I would even end up paying extra. Including 3 mandatory shut-offs per day.