ᐅ Are home battery storage systems for electric vehicles also not cost-effective? Costs of charging station and battery storage
Created on: 11 Aug 2020 07:54
A
annab377
Hello everyone,
I am planning a 15 kWp photovoltaic system for our single-family house and garage. Currently, without an energy storage system, since according to the latest information, it is still not economically viable. It is often advised against for that reason. Does this apply only to normal household use, or would it be different if you have an electric car?
I have a relatively long commute of 80–90 km (50–56 miles), so I’m considering leasing an electric car.
For that, of course, I would need a wallbox (as the interface between the energy storage system and the car) and an energy storage system. It does sound interesting because I could save a few thousand euros on diesel, and energy storage systems and electric cars are currently subsidized as well.
What additional costs should I expect? According to ADAC, a wallbox with 11 kW charging capacity costs about 500 EUR (e.g., HEIDELBERG Wallbox Home Eco). Accordingly, I would also need an energy storage system with a somewhat larger capacity. With an electric car (e.g., VW ID.3, but no Tesla), the payback period should be significantly shorter, right?
Let me know what you think.
Best regards
I am planning a 15 kWp photovoltaic system for our single-family house and garage. Currently, without an energy storage system, since according to the latest information, it is still not economically viable. It is often advised against for that reason. Does this apply only to normal household use, or would it be different if you have an electric car?
I have a relatively long commute of 80–90 km (50–56 miles), so I’m considering leasing an electric car.
For that, of course, I would need a wallbox (as the interface between the energy storage system and the car) and an energy storage system. It does sound interesting because I could save a few thousand euros on diesel, and energy storage systems and electric cars are currently subsidized as well.
What additional costs should I expect? According to ADAC, a wallbox with 11 kW charging capacity costs about 500 EUR (e.g., HEIDELBERG Wallbox Home Eco). Accordingly, I would also need an energy storage system with a somewhat larger capacity. With an electric car (e.g., VW ID.3, but no Tesla), the payback period should be significantly shorter, right?
Let me know what you think.
Best regards
Bookstar schrieb:
In the evening, the system provides more than enough for you. If you can plug in at 5 PM, the car will still charge for 4 hours.From my own experience, after 6 PM it’s basically over (even in summer). You won’t get 2-3 kWh anymore, and that amount is already consumed by the stove and other appliances. I have a storage battery and an electric car, so this is practical experience. The only thing that would help you is free charging at your workplace. Everything else is wishful thinking. To get through the night starting at around 7:30 PM in summer, I need 4 kWh, so charging the car from around 6 PM is out of the question.@Zaba12 That’s what I almost expected. Without storage or free charging at the workplace, it just won’t work out. Especially with daily 80 km (50 miles), relying only on charging on weekends, Saturday and Sunday, hopefully in sunshine, will be very tight and likely not successful.
@Bookstar and @guckuck2, what kind of argument are you having there? I’m getting a photovoltaic system as an investment that will pay off after a certain number of years. Until then, I try to use as much of the electricity myself as possible—before feeding it into the grid with these low feed-in tariffs—which is cheaper than drawing power from the outlet. And after the photovoltaic system is paid off (on average they talk about 14–16 years), every feed-in tariff goes straight into your pocket until the end of the system’s life. Self-consumption is obviously free then as well. How do you see it?
@Bookstar and @guckuck2, what kind of argument are you having there? I’m getting a photovoltaic system as an investment that will pay off after a certain number of years. Until then, I try to use as much of the electricity myself as possible—before feeding it into the grid with these low feed-in tariffs—which is cheaper than drawing power from the outlet. And after the photovoltaic system is paid off (on average they talk about 14–16 years), every feed-in tariff goes straight into your pocket until the end of the system’s life. Self-consumption is obviously free then as well. How do you see it?
Since the government has significantly cut back solar incentives and subsidies, it is no longer financially attractive for me personally. The new residential developments show that many others feel the same way. Hardly anyone installs solar panels anymore, even though it is actually a fantastic technology. For me, an investment must be more profitable, even though solar offers relatively low risk with a modest return. It is better than a savings account, though...
Don’t worry about it, just cover the entire roof (except the north side). I’m a big fan of photovoltaic systems. So far, it’s been the best investment for the entire house.
I don’t expect a financial return, but there is one nonetheless. The great thing is that it noticeably reduces my utility costs, and it has to be said—even though the summer hasn’t been very representative—the whole system is enjoyable and provides significant relief. Since May, I have been generating over 500 kWh per month, and my grid consumption was 15 kWh per month.
I don’t expect a financial return, but there is one nonetheless. The great thing is that it noticeably reduces my utility costs, and it has to be said—even though the summer hasn’t been very representative—the whole system is enjoyable and provides significant relief. Since May, I have been generating over 500 kWh per month, and my grid consumption was 15 kWh per month.
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