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
Andre77 schrieb:
It would be for almost daily commuting. 30km (19 miles) each way. Charging in the early morning/forenoon with photovoltaic power, and at work at Ikea/charging stations from the energy supplier. With the currently increasing number of electric and hybrid vehicles, I wouldn’t rely on free public charging stations anymore. They are either constantly occupied or being removed. I’m not convinced there will be an expansion of them. It’s more realistic to assume charging entirely at home. That should be more cost-effective than charging at a paid public charging station.
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hampshire13 Aug 2020 18:33guckuck2 schrieb:
This can be done expensively using system solutions like "all components from SMA" (although you need to charge a lot for something like that to ever pay off), more affordably for example with an openWB wallbox, or as a "self-made" solution. I have already implemented it using a controllable wallbox (there aren’t many available, in my case a go-eCharger) and a piece of software that queries data from the inverter and controls the wallbox accordingly. It can also be done quite easily by purchasing a modern system that can automatically distribute the generated energy. A lot of development has gone into this, and it will likely attract more attention from users soon. Since I currently have a contract with a manufacturer of inverters and battery storage systems, I am refraining from more detailed discussions or evaluations of manufacturers. That would neither be transparent nor objective.