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
For lithium-ion batteries (and to my knowledge, these are standard in current electric vehicles), if managed by an appropriate intelligent control system, maintaining a mid-level charge is actually optimal. So, keeping the battery between 20 and 80% charge is best. Regularly fully discharging and fully charging the battery is bad for its longevity.
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nordanney11 Aug 2020 12:20KEVST schrieb:
Take a look at the new SMA Wallbox if you are installing a photovoltaic system with SMA equipment. This wallbox can automatically and variably charge using only the electricity generated by the photovoltaic system, if desired. 1,300 EUR for the SMA EV Charger Wallbox
This wallbox from SMA is suitable for use in private garages, company parking lots, and hotel parking areas. Together with the SMA Sunny Home Manager, the charging power can be dynamically controlled via the SMA Sunny Portal. This way, your electric car is charged with clean photovoltaic electricity.Right? What makes it so expensive? I thought a wallbox was available starting from 500 EUR.
Actually, you can probably retrofit something like this easily in a few months or years, right? What should you consider to make sure it’s easy to retrofit?
The ones for 500 are not compatible with photovoltaic systems. Since very few people have or use photovoltaic charging.
As mentioned before, batteries prefer to be charged frequently and kept between 20 and 80 percent.
My e-UP consumes about 12 kWh per 100 km (62 miles). That means you can recharge your daily driving distance in 1 to 2 hours. So, you don’t need a storage system.
And I can tell you, nothing is as much fun as driving an electric car. Every time I have to use our combustion engine vehicle, I’m reminded of that all over again.
As mentioned before, batteries prefer to be charged frequently and kept between 20 and 80 percent.
My e-UP consumes about 12 kWh per 100 km (62 miles). That means you can recharge your daily driving distance in 1 to 2 hours. So, you don’t need a storage system.
And I can tell you, nothing is as much fun as driving an electric car. Every time I have to use our combustion engine vehicle, I’m reminded of that all over again.
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