Planned throttling of wallboxes and heat pumps

  • Erstellt am 2023-03-15 10:16:10

RotorMotor

2023-03-18 13:40:42
  • #1
Thanks! The post would of course have been even more meaningful if you had directly written that it is GW instead of MW. And I still think it has become clear that there are fluctuations of 100% over the course of the day.
 

WilderSueden

2023-03-18 14:03:30
  • #2
I have my doubts about that. You have to heat when it is cold. Of course, you can interrupt for 2 hours sometimes, but during a longer lull in winter (which automatically means a dark lull), you will have to buy electricity at high prices. This will probably wipe out the savings of an entire year in half a week. Otherwise, electricity consumption can only be controlled to a limited extent. Sure, you can run the dishwasher at noon. But that doesn’t add up to large amounts of electricity. Only the electric car is somewhat flexible, although most electric cars have to be charged in the dark during winter. In any case, private electricity consumption is a piece of cake compared to the electricity demand caused by the electrification of industry.
 

xMisterDx

2023-03-18 21:15:58
  • #3
May I ask why you bought a heat pump if you are convinced that the power grid will collapse and we are all doomed anyway as soon as we stop burning coal?

PS:
If it helps. My house connection provides me with 35kW. I need, at most, 15. The rest can gladly go to the neighbors. Then no cable in the ground will start glowing.
 

Bausparfuchs

2023-03-18 22:45:09
  • #4
Standard household connections do not have 35 kW but 16 kW capacity. You consume 15 kW. You would already be at the limit with a standardized household connection.

A 22 kW charging connection for an electric car is utopian. Even with 11 kW it gets tight if a heat pump comes into play. And if this concerns 10 households on a street, then it becomes tight from the grid side. That is why all wall boxes must be reported to the grid operator. Not without reason.

Additionally, the power output of the electricity meter is a limiting factor. You should also take a look at that.

And higher connection capacities are well charged by grid operators, if it is even possible. If you want to build a photovoltaic system over 30 kWp today, you pay for the connection yourself. Possibly even for a transformer station.
 

WilderSueden

2023-03-19 12:12:05
  • #5
That will not collapse. We simply buy Czech nuclear and Polish coal power and cover the rest with gas ;) A variable tariff is not attractive in terms of price.
 

Allthewayup

2023-03-19 12:33:25
  • #6

Not just my topic, it concerns all of us, doesn’t it?
I’m happy to have the connections explained to me; after all, learning is a lifelong process that I certainly don’t want to shut myself off from.
How do you come to the conclusion that I feel like something is being taken away from me? I just simply don’t like being patronized. But who does?


I took some time responding to your post to look at a few studies. As you have probably recognized yourself, the results of any given study depend largely on who commissioned it, when it was commissioned (association with current political activities), and how exactly the question was formulated in the study. So, in summary one can say: the studies are moderately to poorly informative on this topic. There are studies that lean “pro” and studies that show a strong “contra”.
What does stand out, and what my statement mainly relies on, is the drive to regulate by our current government, but that was announced. I’m more the type who relies on a reward system rather than a “punishment system,” and that probably also shapes my attitude towards how the current government deals with the population, which I also belong to. I’m generally the “I’d rather do something voluntarily” than “be led into it” type.


If only the word “if” weren’t there. During my school years, I did meter readings for the municipal utilities for 5 years every September. Of the roughly 500 households I visited each year, about 10 had a high-tariff and additionally a night-tariff meter. Which shows that people simply don’t like getting up at night to cook, iron, or do anything else. So “lack of willingness” isn’t addressed by further incentive systems to ensure grid stability, but rather by more regulation.
I just dare to doubt that once the last coal power plant, the last gas power plant, and other fossil energy suppliers are off the grid, it will be enough to keep the grid stable by temporarily disconnecting the car and the heat pump—assuming we continue to expand renewables at the pace we’re used to or not at all.


Then let’s just turn it off 24/7 :) Joking aside...
As the builder of a passive house, we agree that the best energy is the energy you don’t need in the first place. But what use is it to stubbornly focus only on our CO2 emissions if nearly the rest of the world doesn’t care and produces even more every year? I don’t understand this bitter, isolated German debate about it.

In summary, we agree on most points; only the way it’s implemented is something to argue about.
 

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