ᐅ Monthly Cost for KfW 70 Standard & 2 People

So, our insurance is not with a cheap online provider but with a large, well-known insurance company. We also insured a "special risk" (which is why the cheap online providers were not an option, as they didn’t want to cover that). However, the original poster can inquire about what options are available in their area. This certainly varies a lot depending on the region...

I’m not worried about insurance, my mother works at a major bank that also provides insurance services.

Be sure to include maintenance costs.
The heating system should be serviced annually and is not inexpensive!
A controlled residential ventilation system also requires regular filter replacement.

I consider the estimate to be realistic, as it corresponds roughly to our own calculations. We are thinking about installing a solar system on our flat roof or carport to save on electricity costs of 70 euros. After all, electricity won’t get any cheaper. We wouldn’t have to finance the solar system.

Hello

we have budgeted 350 € for a 110 sqm (1,184 sq ft) apartment / new build / KfW 70 house.

This includes all additional costs except electricity and excludes internet/TV subscriptions, etc. We have estimated reserves of 100 € there.

Is this realistic?

italiano83 schrieb:

We are considering installing a solar system on our flat roof or carport to save the electricity costs of 70 euros. After all, electricity won’t get any cheaper. We wouldn’t need to finance the solar system.

We have also thought about this but have set it aside for now.

In various research and discussions, it became clear that only about 20 to 30% of one’s own electricity consumption can be covered by solar energy. The 30% could be reached, for example, if appliances like the washing machine, dryer, and dishwasher are programmed to run during peak sunlight hours (maximum energy production).

Reasons for this relatively low share of self-consumption:
- Continuous consumers (need to run around the clock) – e.g., refrigerator, freezer chest, etc.
- Increased consumption after dark – during the day most people are at work, and in the evening (when solar production is low or none) various appliances are used (stove, TV, lighting, etc.)
- In the dark and cold months, electricity consumption of heat pumps rises exponentially (less heating is needed in summer) – at the same time, solar production drops sharply in winter (a former colleague with rooftop photovoltaic panels produced as much electricity in one winter month as in two summer days)

Self-generation makes the most sense when combined with a storage solution. These are currently still very expensive (about 10,000 euros), so despite government subsidies, the economics are difficult.

However, this is an option we will keep in mind for the future.