ᐅ Additional meter for heating electricity tariff: yes or no?
Created on: 23 Oct 2023 13:08
D
Dachshund90
Hello everyone,
I would like to hear your opinions on the above-mentioned question, as two electricians have different views.
Conditions:
- Ground source heat pump 8 kW with cooling function for summer
- Photovoltaic system SE+NW 16.38 kWp
- New single-family house with 193 m² (2,076 sq ft) living area
We now want to determine the size of the distribution board. Of course, it is also crucial to know how many meters I will need and how much space should be reserved for them.
One option is to go with 3+1 meters to be ready for everything. However, there is a price difference depending on whether you can leave out two meter slots and have only 1+1 in the panel.
Additional costs come from meter rental fees and usually the higher basic charges, which reduce the savings from the cheaper heating electricity tariff. If I roughly calculate this, you would need to consume quite a lot of electricity (single-family house > 6000 kWh) to benefit significantly from the lower tariff. Does anyone have a clear example calculation?
The questions are:
1. Is the heating electricity tariff generally worthwhile, and from what consumption level? If it’s currently not worth it, should space still be reserved? Who knows how the difference between tariffs will develop.
2. Can the electricity generated by the photovoltaic system be used both for self-consumption within the house (household appliances, etc.) and for the heat pump?
Thank you for your assessments. I am happy to answer any questions.
Good luck
I would like to hear your opinions on the above-mentioned question, as two electricians have different views.
Conditions:
- Ground source heat pump 8 kW with cooling function for summer
- Photovoltaic system SE+NW 16.38 kWp
- New single-family house with 193 m² (2,076 sq ft) living area
We now want to determine the size of the distribution board. Of course, it is also crucial to know how many meters I will need and how much space should be reserved for them.
One option is to go with 3+1 meters to be ready for everything. However, there is a price difference depending on whether you can leave out two meter slots and have only 1+1 in the panel.
Additional costs come from meter rental fees and usually the higher basic charges, which reduce the savings from the cheaper heating electricity tariff. If I roughly calculate this, you would need to consume quite a lot of electricity (single-family house > 6000 kWh) to benefit significantly from the lower tariff. Does anyone have a clear example calculation?
The questions are:
1. Is the heating electricity tariff generally worthwhile, and from what consumption level? If it’s currently not worth it, should space still be reserved? Who knows how the difference between tariffs will develop.
2. Can the electricity generated by the photovoltaic system be used both for self-consumption within the house (household appliances, etc.) and for the heat pump?
Thank you for your assessments. I am happy to answer any questions.
Good luck
W
WilderSueden27 Oct 2023 11:47Keep dreaming. Residential households always come last. And after 6 cents industrial electricity price and plenty of subsidies for hydrogen, it will come as no surprise that there will be no money left at all.
D
Dachshund9030 Oct 2023 19:26E-Werk Mittelbaden has an article about cascade connection on their website. It states that with a price difference of 7 cents, the heating electricity tariff becomes worthwhile after about 2000 kWh (found easily via Google).
What is then incorrect about this article? How can I roughly calculate the electricity consumption of the heat pump combined with the mentioned photovoltaic system? I would roughly estimate it consumes about 3200 kWh without photovoltaics and about 2300–2500 kWh with the photovoltaic system, which is more than the 2000 kWh mentioned in the article.
Best regards
What is then incorrect about this article? How can I roughly calculate the electricity consumption of the heat pump combined with the mentioned photovoltaic system? I would roughly estimate it consumes about 3200 kWh without photovoltaics and about 2300–2500 kWh with the photovoltaic system, which is more than the 2000 kWh mentioned in the article.
Best regards
W
WilderSueden30 Oct 2023 19:52Dachshund90 schrieb:
What exactly is wrong with the article then?The 7°C (13°F) difference? At least here, you can only dream about that. The calculation is quite simple:Meter costs / price = required amount in kWh
Then you just have to plug in your own numbers: how much the second meter costs you and how much cheaper heat electricity is in your case. And even if you assume you’re just barely above that… with heat electricity, the operator is allowed to turn off the heat pump. Not having to deal with that would be worth a beer a year to me.
M
motorradsilke30 Oct 2023 20:29We still have about a 10-cent difference. You hardly notice when it is switched off.
For us, the second meter is therefore worthwhile.
For us, the second meter is therefore worthwhile.
R
Radfahrer30 Oct 2023 20:35I have just over 4 cents.
In new buildings with photovoltaic systems, there is no need to start calculating here. However, it used to be very different.
In new buildings with photovoltaic systems, there is no need to start calculating here. However, it used to be very different.
H
HeimatBauer31 Oct 2023 08:08Here, there is a 12-cent difference and just under 4,000 kWh of heat pump electricity drawn from the grid per year. Since I will increasingly use photovoltaic power directly in the household instead of the heat pump in the future (because this gap was only recently fixed), this difference will become even more noticeable.
Once a few things have settled here and perhaps there are several providers offering similar services, I will probably switch to Tibber or something similar, as this will allow me to control the timing even more precisely. Financially, it will probably only make a minor difference; for me, it is also a hobby.
Once a few things have settled here and perhaps there are several providers offering similar services, I will probably switch to Tibber or something similar, as this will allow me to control the timing even more precisely. Financially, it will probably only make a minor difference; for me, it is also a hobby.
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