Is energy storage also unprofitable for electric cars? Costs of wallbox + storage

  • Erstellt am 2020-08-11 07:54:28

annab377

2020-08-11 16:45:34
  • #1
Yes, I don't get it now either? What’s the point of having a photovoltaic system? It’s best to use the electricity myself, given the currently low feed-in tariffs.
 

guckuck2

2020-08-11 16:49:24
  • #2
Having is known to be better than needing. When the photovoltaics are installed, the grid operator only notices the share fed in. If an electric car is connected, the photovoltaic production is practically unnoticeable. Of course, with 30kW photovoltaics and 3.7kW charging power of a plug-in hybrid, this statement no longer applies. For a BEV, you realistically need up to 11kW charging power. There are a few models that can charge at AC 22kW. Of course, this is a technical limit valid today, which may no longer apply in the future, but 11kW charging power is more than enough to fully "refuel" a BEV overnight, even if you drive an eTron or Tesla. Our grid operator provides 30kW anyway, which was already included in the connection flat fee, and the electrician also justified it at least approximately in the I-application (large consumers named), so we also got it confirmed and secured (3x63A). Realistically, in a normal household you never exceed 10kW. You have to turn on all plates and ovens. You only exceed that with a heat pump, and even then only if you have a heating element and it should kick in. I myself have never exceeded 10kW even with a heat pump. As always, nonsense from you on this topic. The reality looks quite different. Generation costs here about 6 cents per kWh, plus about 4 cents VAT on self-consumption. After 5 years, these are also eliminated.
 

Nida35a

2020-08-11 17:21:33
  • #3
my quiet hope and plan is towards Photovoltaics, car as a buffer battery, air heat pump and HPS system for H2 / electricity storage throughout the year. A lot of research is being done and the car should already be capable of reverse charging, at the moment everything is still too expensive
 

nordanney

2020-08-11 17:58:58
  • #4
Well, actually every wallbox is photovoltaic-capable. When the sun is shining, you use the photovoltaic power, as it is not fed into the grid.
 

Bookstar

2020-08-11 18:16:54
  • #5
Your reality ... I can draw electricity for free as long as the investment in photovoltaics pays off again, so I couldn't care less about this calculation...
 

guckuck2

2020-08-11 18:55:43
  • #6
Then you have not understood the principle of investment and return. It's okay, but then please refrain from discussing these topics in your ignorance.
 

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