Tibber, Pulse Smart Home Module experiences?

  • Erstellt am 2023-07-03 12:10:53

WilderSueden

2023-07-03 14:03:28
  • #1
Technically, many things are possible, so the question is whether it should become a hobby. Because with a 7c surcharge for Tibber and fees and an 8c feed-in tariff, electricity prices would have to be at zero or negative for Tibber to be worthwhile compared to photovoltaics. I just came across the site Blockheizkraftwerk Infozentrum, which has detailed statistics on the topic of negative electricity prices. Summer days with negative electricity prices seem to be rather rare; most are from December to May. Heating could possibly benefit from this, however, the market electricity price also has a certain seasonality, and it is questionable whether we will still see negative electricity prices so frequently in winter now that the nuclear power plants are gone and at the same time many things are being electrified.
 

kati1337

2023-07-03 15:05:20
  • #2

That's why we have the idea. We came across it through an electric car community because yesterday there was a note posted saying you should quickly plug the cars into the wallboxes, the price would be -45 cents, so you get 45 ct per kWh you draw.


Apparently it should. The man really enjoys things like that. Besides, we've already invested a lot in our little house with garden and technical gadgets, so the whole project "house" and "living" becomes a kind of hobby. ;)
Moreover, we are rather "green behind the ears" and I find the concept extremely forward-looking, because it encourages people explicitly to draw electricity from the grid when there is too much electricity in the grid. Loads we can distribute, we don't need to store somewhere (with losses). When there is a lot of electricity, best use it. ;)
We are also ideal candidates for such a system since we both work from home. That means we are also at home during the day to manually start consumers if necessary when it is cheap.


Where do they all get the 7 ct surcharge for Tibber from? According to their website, they don’t have a fee for consumption, only a monthly price of €4.90 and you pay for the purchase of the Pulse once with €100-150.

What I wonder is: How well can I control my "home system"? Photovoltaics with storage and wallbox is new territory for us. I probably have to ask the electrician. Yesterday, we read in the car community that people have taken their photovoltaic systems off the grid (turned off the inverter) to draw as much as possible from the grid because the price was negative.
I would rather avoid that. I put my photovoltaic panels on the roof to generate clean electricity, and as much as possible. I don’t want to disconnect them. They have to buy my electricity for about 8 ct, so in the case of negative electricity prices, I would rather feed in fully and draw our household demand from the grid. But that would require that I can control this. So tell the photovoltaic system "feed in," and the wallbox / storage / household "draw from the grid."
It should at least be possible to tell the storage "don’t discharge until this evening," but whether it is possible to tell it "fill yourself from the grid, not via photovoltaics, and right now" – I don’t know.

What also surprises me: Tibber publishes the prices for the coming day on the day before. How does that work?
 

WernStö

2023-07-03 15:08:24
  • #3
I have been using Tibber since February 23. Since March also with the Pulse sensor on my 2-way meter. I have a photovoltaic system with 7.2 kW peak, a 7.0 kW SolarEdge inverter, a BYD storage system with 8 kW, and an APL Wallbox. I drive a BMW 2 Series PHEV with an 8 kW battery that powers a 50 kW electric motor in the rear. Additionally, the car has a 160 hp gasoline engine.

In March, I paid €58.33 for 170 kWh. In April, €39.12 for 93 kWh, in May €32.65 for 67 kWh, and I will pay €44 for 177 kWh in June. On top of the fluctuating market price, there is a monthly charge of €14.94 for Tibber basic fee + metering point fee + grid usage fee. This basic fee is already included in the above-mentioned prices! In the end, I have NEVER paid so little for residual electricity as with Tibber. Rare but possible is that you get paid for the CONSUMED electricity from Tibber. Yesterday we had a negative price of 48 ct/kWh for one hour!

The Tibber app communicates directly with my BMW. When I come home in the afternoon and my photovoltaic system produces more than 3.6 kWh surplus electricity, I charge the car immediately. Otherwise, I let Tibber decide; usually, the charging is interrupted after a short time and continues at night. The only thing I have to do in the app is to switch the "Smart Charging" function ON or OFF depending on the surplus from the roof. P.S.: The photovoltaic battery stays out of this. I do not want to store the cheap electricity in the battery to then charge the car. That makes no sense during expensive morning and evening times. Then I need the electricity from the BYD storage.

One more tip: I have a hot water controller that heats the domestic hot water during the day from surplus electricity. Additionally, I can set the controller to heat the water until 6 a.m. The energy comes from the photovoltaic storage. This means: warm water in the morning and at least a half-full storage for the expensive morning hours. The storage is refilled during the day for at least 7 months of the year and is available to me for the evening. Nevertheless, I still receive about €35-40 per month for the surplus electricity I feed back into the grid.

My electricity consumption has decreased within two years (during the setup time of the photovoltaic system, photovoltaic storage, hot water controller) from 3,800 kWh to about 1,800 kWh.

I can only advise everyone: fill your roofs and use Tibber for the residual electricity.
 

HeimatBauer

2023-07-03 15:34:26
  • #4
Yep - it stands and falls with controllable large consumers. The example with the BMW that communicates directly with Tibber is optimal. If you have to use dirty tricks and tinkering to shift some consumption, then it quickly becomes a hobby.
 

WilderSueden

2023-07-03 15:39:54
  • #5
I took the 7c now from . But Tibber tells me more about 15c taxes and charges here, then own electricity would still be clearly more advantageous. Although to be honest, I don't really understand the graphic. It says "current price" above, but the day is not over yet? That would fit relatively well with the Day-Ahead. But then that would be the electricity price for tomorrow, not for today?
 

kati1337

2023-07-03 15:54:47
  • #6

It somehow works like this: from 1 PM they publish the prices for the next day. Then you can decide what to do.
Yesterday, for example, it wasn’t like people saw "oh! If I draw electricity, I get 48 cents!" but you know that one day in advance.

You’re right about the graphic above, using photovoltaic electricity would still be cheaper than Tibber grid consumption. It’s more about the scenarios – which now also sometimes happen – where the electricity price drops so far into the negative that after taxes and fees you actually get paid for consuming electricity. That’s how it was yesterday afternoon, for example, with something over 40 cents per kWh.
 

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