ᐅ Photovoltaics – Questions About Taxes and Commercial Classification

Created on: 5 Sep 2019 16:44
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Christian K.
Hello everyone,

We are planning to install a photovoltaic system with a battery storage for our new single-family house. As far as I understand, I should register a small business beforehand so that I can declare value-added tax (VAT) or sales tax. Then, I would need to report the monthly earnings from the photovoltaic system to the tax authorities, but this way I can reclaim the VAT on the purchase costs and depreciate the entire system over 20 years.

We are getting the battery from Sonnen and will sign a contract with Sonnen. This means the surplus energy will be fed into Sonnen’s system and compensated. This should be relevant, but I mention it just for completeness.

Is this correct? Is there anything else I should consider when registering the business, besides being able to declare VAT?

Thanks
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Heinz2k
6 Sep 2019 12:21
HilfeHilfe schrieb:

So, wait and see or first come, first served?

You’ll need to ask Altmaier, but at the moment, you’re not likely to get much more than empty promises. The fact is, you still have a guaranteed payment for another 20 years.
SlippySken schrieb:


The mentioned “link” also says something about “WRONG: photovoltaic power can only be used either for the household OR just for the heat pump or storage heating.” Someone claimed that last weekend too. When is it possible to use both?

You can connect the meters in series (search for measuring concept 9 or cascade measuring concept), and then it is definitely possible. However, you should expect resistance from your grid operator.
S
SlippySken
6 Sep 2019 12:31
Lumpi_LE schrieb:

Of course, you can use it for both. In an energy-efficient new building, the heat pump and the household electricity are not separated either.

Even if you want to have a separate tariff for the air-to-water heat pump? Or are those tariffs not worth it?
H
Heinz2k
6 Sep 2019 13:00
If your entire system design is poor and the air-to-water heat pump constantly has to run, then it is worthwhile. If you have a reasonably good design and implementation, then probably not.
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Grantlhaua
6 Sep 2019 13:07
Lumpi_LE schrieb:

In an energy-efficient new build, the heat pump and household electricity are not separated either.
Why not? Ideally, you want a different tariff for the heat pump electricity than for the household electricity.
Heinz2k schrieb:

If your entire system design is poor and the air-to-water heat pump has to run constantly, then it makes sense. If you have a reasonably good design and implementation, then probably not.

That has nothing to do with how the system is designed. A heat pump tariff is always cheaper than the regular household electricity.
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Lumpi_LE
6 Sep 2019 13:14
Grantlhaua schrieb:

Why not? Ideally, you want a different tariff for the heat pump electricity than for the house electricity.

No, you can easily figure out what that would save you. In an energy regulation-compliant house, you might save around 30-40€ with two meters, but with a KfW55 standard and a ground-source heat pump, you will definitely end up paying more.
Basic fees, meter fees... just because the kWh is 5 cents cheaper doesn’t make it worthwhile.
S
SlippySken
6 Sep 2019 13:16
Lumpi_LE schrieb:

No, you can easily calculate what it actually saves you. In an energy regulation-compliant house, you might save 30-40€ with two meters, but with KfW55 standards and a ground source heat pump, you’ll definitely end up paying more.
Basic fees, meter fees... just because the kWh is 5 cents cheaper doesn’t make it worthwhile.
Ah, I hadn’t thought about the meter fees and basic charges.

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