Hello everyone,
I hope you can help me. In our development area, there will be a cold local heating network, where the energy provider supplies the heat pump in the house through deep drilling and a connected ring main network.
We have been considering integrating a photovoltaic system to use the self-generated electricity to power the heat pump. So far, so good! Today we received a letter from the energy provider stating that, for billing reasons, it is not possible to use the self-generated electricity for the heat pump.
Here is the original wording:
“As you have correctly understood, for billing reasons it is not feasible to register self-generated electricity from a photovoltaic system. By feeding it into the system through us, there would additionally be the disadvantage that the full Renewable Energy Act surcharge would apply to all electricity, so the benefit of self-generated electricity would no longer be fully realized.”
Has anyone heard of something similar? Is it really not possible?
If that is the case, a photovoltaic system almost doesn’t make sense anymore. The contract conditions do not state anywhere that self-generated electricity cannot be used for the heat pump.
Thank you very much in advance!
I hope you can help me. In our development area, there will be a cold local heating network, where the energy provider supplies the heat pump in the house through deep drilling and a connected ring main network.
We have been considering integrating a photovoltaic system to use the self-generated electricity to power the heat pump. So far, so good! Today we received a letter from the energy provider stating that, for billing reasons, it is not possible to use the self-generated electricity for the heat pump.
Here is the original wording:
“As you have correctly understood, for billing reasons it is not feasible to register self-generated electricity from a photovoltaic system. By feeding it into the system through us, there would additionally be the disadvantage that the full Renewable Energy Act surcharge would apply to all electricity, so the benefit of self-generated electricity would no longer be fully realized.”
Has anyone heard of something similar? Is it really not possible?
If that is the case, a photovoltaic system almost doesn’t make sense anymore. The contract conditions do not state anywhere that self-generated electricity cannot be used for the heat pump.
Thank you very much in advance!
[QUOTE][/QUOTE]
K
knalltüte26 Feb 2021 08:28So the operator of the ring main network (that’s what this is about, right?) should be able to prohibit supplying the heat pump with its own electricity? It seems to me that the heat generated by the heat pump, powered by its own electricity, flows back into the ring main network? Then the operator claims that Renewable Energy Act surcharges would apply? But that’s a misunderstanding, as those surcharges apply exclusively to electricity, definitely not to heat.
Are there publicly accessible documents regarding this project? Please do not post links, just describe where the documents can be found.
The constant baseline operation of the heat pump ensures a high degree of self-consumption even WITHOUT a battery, which makes photovoltaics significantly more efficient (economically). Battery? That discussion is old, and the general conclusion is: it is (still) not financially worthwhile (and at least ecologically questionable). My future BEV has a 63 kWh battery and costs (including everything around the car) about 40,000 gross, while my 4 kWh photovoltaic battery costs ... 3,200€ net ...
Are there publicly accessible documents regarding this project? Please do not post links, just describe where the documents can be found.
The constant baseline operation of the heat pump ensures a high degree of self-consumption even WITHOUT a battery, which makes photovoltaics significantly more efficient (economically). Battery? That discussion is old, and the general conclusion is: it is (still) not financially worthwhile (and at least ecologically questionable). My future BEV has a 63 kWh battery and costs (including everything around the car) about 40,000 gross, while my 4 kWh photovoltaic battery costs ... 3,200€ net ...
superzapp schrieb:
So the operator of the looped network (that’s what this is about, right?) should be able to prohibit supplying their own heat pump with their own electricity? It seems to me that heat generated by the heat pump, powered by their own electricity, flows back into the looped network? Then the operator thinks this would incur a Renewable Energy Act surcharge? But that’s not correct; that doesn’t apply here... The setup as I understand it:
The heat pump is owned by the network operator. The network is not looped but has a supply and return line—so, a tree topology. The supply comes with a “higher” temperature, the heat pump extracts energy and sends the cooler return line back to the primary energy source. If the operator now receives photovoltaic electricity from the customer, then (to my layman’s understanding) the Renewable Energy Act surcharge applies.
D
DaniMartinez26 Feb 2021 08:54MayrCh schrieb:
Who owns the heat pump? The supplier or the customer? That’s the issue... the contract states in one section that the heat pump remains the property of the energy provider and is only considered a nominal part of the house.
Under the connection costs section, it says that we have to pay a one-time fee of 17,400 euros and that this covers the installation of the house connection, the heat pump system, as well as all other materials and expenses necessary for the provision of heating and cooling according to the contract, up to the heat meter located behind the heat pump!
How do you understand especially the last part? ♂️
D
DaniMartinez26 Feb 2021 08:55nordanney schrieb:
Does the heat pump necessarily require a separate meter / tariff for you? Because there has to be a complete separation between household electricity and heat pump electricity. I was told on the phone that I can get the household electricity from a different supplier! So that should be possible, right?
D
DaniMartinez26 Feb 2021 08:59Müllerin schrieb:
What a coincidence – we just had an information session about this development area using this technology 😉 I guess I know where you’re building...
So the utility provider can forbid you from powering the heat pump with your own electricity, as it would become unprofitable for them. Somehow, they have to recover the enormous costs of building the system. They need to count at least on the electricity consumption for the heat pumps.
What they can’t forbid you, however, is to use the photovoltaic electricity for your “normal” household consumption. So photovoltaic systems still make sense.
Are you planning to get a battery as well? Okay, then guess where we want to build!! I can definitely understand the cost issue, but we already pay a one-time fee of 17,400€ (as described above), then 500€ annually for maintenance, servicing, and warranty, plus the operating cost of the heat pump at 5.95 cents per kWh. It might almost be more economical to drill on my own property... then I would own it and, although there would still be ongoing costs, at least I wouldn’t be dependent on the energy supplier, right?
N
nordanney26 Feb 2021 08:59DaniMartinez schrieb:
Here’s the thing ... the contract states in one section that the heat pump remains the property of the energy provider and is only a nominal part of the house.So, you’re out of luck with your photovoltaic electricity. The energy provider sets the terms. Photovoltaics for self-consumption (household) are possible, but not for the heat pump. So be it. For a relatively small amount of money, you will get a geothermal heating system. Enjoy that.
P.S. You wouldn’t have saved much money anyway with the photovoltaic electricity and the heat pump. You’ll just pay about 10€ per month more for external electricity (if even that).
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