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
@RotorMotor hit the nail on the head:
There is absolutely no government subsidy for photovoltaic systems....
Bookstar schrieb:
My e-UP consumes about 12 kWh per 100 km. That means you can recharge your daily distance in 1 to 2 hours. So, you don’t need a battery storage system.
There is absolutely no government subsidy for photovoltaic systems....
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nordanney12 Aug 2020 18:54RotorMotor schrieb:
He has an electric carNot an electric car, but a mini electric car...If I didn’t still have my relatively new car, I would almost consider leasing an electric vehicle on the side.
To revisit the earlier question:
To revisit the earlier question:
Are there still kWp limits that make sense or don’t make sense?
Why only 9.99 kWp when 15 or even more kWp fits on the roofs facing east, south, and west? Should I maybe also install just 9.99 kWp or what?
(As far as I know, there is a 30 kWp limit, but that’s probably difficult to achieve for most typical single-family homes.)
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hampshire12 Aug 2020 19:29Musketier schrieb:
but should be charged economically during surplus phasesThat is exactly the correct approach. Using the car to discharge the battery storage is nonsense—especially since most systems have very limited discharge capacity. Surplus electricity should be directed to the car and controlled intelligently by a smart device with well-defined scenario settings.annab377 schrieb:
There is 0.00% government support available for photovoltaic systems....That is actually appropriate, as photovoltaic systems are now profitable even without subsidies. Incentives simply no longer make sense.RotorMotor schrieb:
He bought an electric car that has a 36 kWh (36 kWh) battery... Probably a e-up, which should be eligible for the 11k (11,000) incentive. That’s the solution to the mystery! There were great discounts in January and then the COVID bonus. Altogether, that adds up to a few thousand euros over 11,000. Once you’ve driven the car, you never go back to an internal combustion engine. Amazing vehicle. But this is a bit off-topic—I just wanted to show what kind of prices are currently possible... maybe there will also be a "promotion" for solar at some point.
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RotorMotor12 Aug 2020 22:29That’s really insanely cheap when you compare it to the fact that photovoltaic storage systems rarely cost less than 1,000 €/kWh. Why does it cost only about a third in a car, and there are still wheels, motor, seats, and so on included?
Even with a 6,000 € e-car subsidy, this doesn’t add up?!
Am I missing something, or should we rather take the batteries out of cars and use them as photovoltaic storage?
Even with a 6,000 € e-car subsidy, this doesn’t add up?!
Am I missing something, or should we rather take the batteries out of cars and use them as photovoltaic storage?
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