Construction costs are currently skyrocketing

Oh yes, the 70% throttling has basically been abolished.

For systems larger than 7 kWp, you're supposed to be able to lift the 70% limit using a smart meter? Is that a new/different/additional meter or what exactly is it and how much does it cost? Because I am running just under 10 kWp.

Yes, 2023. 24 modules, that is correct. It is a hip roof with a quite exact east/south/west orientation. Whether that makes sense I keep asking myself as well. Payback period somewhere between 13-15 years according to the calculation documents. Of course, there is a wide variation possible.

But wouldn't it make more sense to put the 24 modules only on the south? Instead of splitting it like that? In which number and which orientation? I would rather have argued to get rid of the storage and instead fully equip east, south, and west. That way you get quite a bit more in winter that helps to manage. But such nonsense with a few panels here and a few there...... I have 30 modules on a gable roof with good south orientation.

For systems larger than 7 kWp, you should be able to waive the 70% rule via Smart Meter, right? A new/different/additional meter or what exactly is that and how much does it cost? Since I’m running just under 10 kWp.

Yep, Smart Meter is then mandatory. Maybe already installed at your place? In some cases it is already mandatory. This means a new meter or an additional device.
The goal is that the electricity meter/the additional device performs data transmission.
Installation costs, if you voluntarily want a suitable meter, are at the operator’s discretion. Otherwise, there are annual caps for meter rental fees.

I myself don’t have one yet either, although I should (electricity consumption over 10,000 kWh + heat pump). But I have to get to it sometime, because quite a bit of electricity is cut off in summer (10 kWp system).

I have a digital bidirectional meter. Approximately from 2.5 years ago.

The model is called SGM-DD-4A92T. If I read it correctly, it is a three-phase SmartMeter bidirectional meter. It was mentioned in another forum. So having that alone is enough to keep the 70%? That would be cool…

It is probably even the case (looked it up specifically today) that even existing systems for which the input tax has already been claimed and refunded can now be switched to "hobby" without consequences of partial repayment (however, this apparently only applies up to 30 kWp total of all systems owned by one owner)

The hobby classification refers to income tax and is already possible.


Your calculations are of course now rather pointless, since the whole continent wants to move away from gas. Heat pumps are accordingly poorly available and expensive. Now it is simply too late to think about it.
Gas will no longer require approval in new buildings starting next year. That chapter closes. Apart from that, I actually assume that electricity in particular (we _never_ had a power problem!) will become cheaper again next year, and gas as well. What we are experiencing right now is hysteria, as only Germans can spread it best. Whether gas, rapeseed oil (in a holiday in Turkey 5 liters for €2.50 on the shelf!), toilet paper or anything else – as soon as the Western world is threatened, everyone here goes crazy. Added to that is a certain type of person who fuels it.