Construction costs to achieve KFW 55 funding

We have almost completed our construction project - about 190 sqm KFW55 (Energy Saving Ordinance 2014 from before 2016), simple design with gable roof and clinker brick, brine-water heat pump, electric roller shutters. For the house on a slab foundation (without land) with standard equipment (including painting and flooring), we have so far paid 320,000 € including incidental construction costs. In proportion, that would mean 270,000 € for 160 sqm. Additionally, all exterior work, kitchen, and furniture still need to be added.

Price-wise that sounds interesting. However, we will have to build according to the Energy Saving Ordinance 2016. There we probably won’t be able to get by with a condensing boiler.

Which efficiency house status or usage is to be achieved?

With the photovoltaic system, my goal is to be as independent from the market as possible. In a few years, storage systems will be more affordable, so one can certainly approach a self-sufficiency rate of 40 - 50%. Heat pumps and photovoltaics complement each other very well.

We have brine-water heat pumps with deep drilling, no gas.

Hello,

.... thus a power-hungry heating element is no longer needed.

There is a lot of nonsense written about this on the internet; I have no desire to go into it again; I have already done so here often enough. If you are convinced that a ground source heat pump with ground collectors is right for you, then stick with it.

With the photovoltaic system, my aim is to be as independent from the market as possible.

That also works without storage; for example, the Doc regularly writes here about his consumption. One of my customers just told me last week that he only has about €10.00/month in operating costs for his single-family house. I simply do not understand the deeper sense of a ground source heat pump combined with photovoltaics.

In a few years, storage will be more affordable, so you can certainly scratch an autonomy level of 40-50%. Heat pump and photovoltaics complement each other perfectly.

They are already affordable now; Tesla is cleaning up the market well. This also means that up to 70% autonomy can already be achieved today.

Rhenish greetings from on the road

It also means that up to 70% autonomy can be achieved today.

I'm sure: With the powerful Tesla battery, reaching 70% is not a significant problem at all. Maybe a small energy management system (charge/discharge/usage management), but wasn't that included? Forgot, I need to read up on that again.

Anyway.

70% autonomy in electricity.

Sensational! If someone had told me that 20 years ago, I would have answered: Keep dreaming... today it is lived reality.

They are already affordable; Tesla is cleaning up the market well. This also means that up to 70% self-sufficiency can be achieved today.

No offense, but the parts are not yet on the market – neither the price nor actual functionality is currently known, right?

Tesla is known for its top-notch marketing, but the car models also have their weaknesses – especially in range and also in the durability of the batteries.

I am also very curious about the battery but remain skeptical.