ᐅ Commissioning a photovoltaic system and charging an electric vehicle.

Created on: 8 Jul 2021 09:37
S
Stefan2.84
Hello everyone,

Our photovoltaic system is scheduled to be put into operation soon. I have several questions related to this topic and hope to get some helpful ideas.

1. I am currently dealing with all the tax paperwork. Monthly VAT returns through Elster and so on seem relatively straightforward. Still, does anyone have a link, guide, or website that explains this topic clearly for beginners?

2. The topic of one or two meters for household and heat pump has come up here several times. For now, I have decided to stick with two meters. Since ideally, I want to power both the heating and household with the photovoltaic system, the PV vendor recommended a "power to heat" setup. Does anyone have experience with this and can offer advice? The electrician who will install the system soon was more cautious and wanted to cover only household electricity with the PV system. Which is better?

3. Now, this is a bit off-topic: Since my car has broken down, I am considering getting an electric vehicle. Does anyone have experience with how well charging an EV through the photovoltaic system works? In winter, of course, it’s probably less effective since the car won’t be at home during the day. The wallbox is already ordered. However, I am still unsure whether this makes sense. The car would stay in the garage continuously on weekends, so there should be enough hours to have it fully charged by Monday.

4. Now this is even more off-topic: Since house construction and the upcoming outdoor landscaping are costly, an unplanned vehicle purchase hurts the budget a bit. Since I want to keep my reserves untouched, I’m considering leasing an electric car. Thanks to environmental incentives, the monthly costs should be relatively low. I had an appointment at a dealership yesterday. When I compare their offer with those online, there are sometimes very large differences. Common leasing platforms also offer deals from dealerships, but often cheaper than the local dealer. Does anyone know why there are such differences and whether online offers are reliable? Has anyone leased a car online?

Thanks and best regards

Stefan2.84
S
Stefan2.84
8 Jul 2021 12:06
Tarnari schrieb:

If I may join the discussion with a question, since I’m currently looking into this topic as well.
My idea is that when it’s time for an electric car, I want to install a battery storage system for our solar setup.
Unfortunately, the car would not be connected to the grid while the system is producing energy, since I’m at work then. The idea would be to install a storage battery that charges during the day and then supplies power to the car at night when it’s in the garage.
That should be possible, right, or am I missing something?

Battery storages usually have a capacity of around 6–10 kWh (13–22 kWh on average???). I would say that’s not very much when it comes to powering an electric car. It should be enough for about 50 km (30 miles), though.
Tarnari8 Jul 2021 12:08
Stefan2.84 schrieb:

The battery storage has a capacity of 6-10 kWh (roughly on average???). I would say that this is not enough to get far with an electric car. It should be enough for 50 km (30 miles).
Hmm... that is obviously not much. Well, it would be enough for the daily commute to work... still, it’s not ideal.
N
nordanney
8 Jul 2021 12:19
Tarnari schrieb:

That should be possible, or am I missing something?

That’s fine.
Stefan2.84 schrieb:

Battery storage has a capacity of 6–10 kWh (around average???). I would say that’s not enough to get very far with an electric car. It should be enough for about 50 km (30 miles).

That’s also correct. Although it must be said that the solar panel system often cannot fully recharge the battery storage on many days. In summer, it usually can.
Tarnari schrieb:

Okay, it would be enough for the daily commute to work… still, not ideal.

Even worse is that you don’t get the VAT back if you install a solar panel system first and then add the battery storage later. In that case, the storage becomes significantly more expensive than ordering the solar panels and battery storage as a package.
I
Isokrates
8 Jul 2021 12:23
Tolentino schrieb:

If you feed electricity back into the grid, yes. Then you are considered a business operator. You would then be an electricity producer.

However, that is a somewhat oversimplified view. Without going into detailed tax matters, to classify a vehicle as business property (for tax deduction purposes), it must be used at least 10% of the total mileage for business purposes. Additionally, as a business operator, you need to be able to provide an overall profit forecast.
Currently, with an energy storage system involved, this requires significant planning, and with a vehicle, you would immediately be classified under hobby operations (non-commercial use).

Therefore, the vehicle cannot be claimed for tax purposes.

I cannot say how the dealers’ terms and conditions handle this.
You would need to read the general terms and conditions carefully.
In most cases, business operators have weaker legal protection compared to private individuals.
There could also be registration issues to consider.
C
Chris2511
8 Jul 2021 12:27
What is so great about all these electric car leasing offers right now?
You don’t benefit from the environmental bonus. You pay it upfront as a down payment and then have to claim it back through the BAFA application.
So you basically hand it straight over to the dealer and are then enticed by supposedly "affordable" leasing rates.
N
nordanney
8 Jul 2021 12:34
Chris2511 schrieb:

What exactly is so great about all these electric car leasing offers right now?
The fact that I can get advanced technology for a low price today, which might be outdated in two to three years to the point that nobody wants to buy the car secondhand anymore (for example, real range today 250km (155 miles) ⇒ in three years 600km (373 miles)). I definitely don’t want to commit to buying a car under those conditions! What is a smartphone from three years ago still worth today? Or a smartwatch?

Similar topics