ᐅ Air-to-Water Heat Pump: Current Consumption and Data

Deliverer schrieb:

Where do you get more official values than from the inverter?

The generation meter is, of course, integrated into the inverter, with self-consumption calculated as the generation minus the feed-in meter/register from the grid operator. The inverter itself also calculates self-consumption based on the same generation meter inside the inverter, minus the household consumption measured by a smart meter and transmitted to the inverter (in my case via Modbus, previously via an S0 interface when I didn’t yet have a smart meter). These two calculation methods definitely diverge, although not significantly. The self-consumption value directly from the inverter is always lower than the official value determined by the first method.

Apart from that (we’re already off-topic again), the bureaucratic madness is definitely the downside of solar energy. Why not simply allow rooftop photovoltaic systems up to 30 kW with a reduced VAT rate, and completely eliminate VAT refunds or assessments? The same goes for any complicated income and expense accounting, which at current feed-in tariffs always ends up below the exemption threshold anyway. This is a completely unnecessary obstacle for photovoltaic systems.

guckuck2 schrieb:

But the inverter itself also calculates the self-consumption, ...

Ah, thanks. I’ll have to check what my smart meter does with the original values.

Hangman schrieb:

Aside from that (we are already off-topic anyway), the bureaucratic madness is really the downside of solar energy. Why not simply allow rooftop photovoltaic systems up to 30 kW at a reduced VAT rate, and completely eliminate VAT reimbursement/assessment? The same goes for those absurd simplified profit and loss calculations, which—given the current feed-in tariffs—always end up below the tax-free allowance anyway. It’s a completely unnecessary obstacle for photovoltaic systems.

Basically, I agree with you. But there has been progress that should be acknowledged:
- With the 2019 tax year legislation, trade tax liability was eliminated for systems up to 10 kW
- In the 2020 tax year legislation, the federal council wanted to introduce an exemption from income tax for small systems, but it was not supported by a majority. Instead, the tax authorities introduced a simplified regulation—you can now have your system informally classified as a hobby, which means the simplified profit and loss statement is no longer required.
- After 5 years, switching to the small business regulation also resolves all issues regarding VAT.

guckuck2 schrieb:

Basically, I agree with you. But there has been progress that should not be overlooked:
- With the 2019 Annual Tax Act, the trade tax obligation was eliminated for systems up to 10 kW
- In the 2020 Annual Tax Act, the Federal Council tried to introduce an exemption from income tax for small systems, but it was not approved by the majority. Instead, the tax authorities introduced a simplification rule – you can now classify the system informally as a hobby, so the income-expenditure statement (EÜR) is no longer necessary.
- After 5 years, switching to the small business scheme also resolves all issues related to value added tax / sales tax.

I am aware of this, but personally I have the problem that a) my system is more than 10 kW, and b) I initially claimed a larger depreciation, so the simplification rule no longer applies to me. Although I still end up with the income-expenditure statement (EÜR) below the tax allowance, it is at least calculated to the exact cent according to all the rules 🙄 Who knows, maybe soon there will be a simplification of the simplification rule 😉

I manage fine myself but know enough people who say "it's too complicated, I won’t do it" – that was my point.

Hasn't the 10 kWp limit been increased to 30 kWp by now? Or is the final decision still pending?