Steel frame single-family house - Recommended alternative construction method?

So... I do like that kind of thing, the oil rig romance Whether I would want that for myself, however, is another question. However, the house was awarded in 2005, so it was built sometime around 2004/2005. Can you still comply with the energy saving ordinance today? But interesting!

Why this special feature? Special features usually cost money and expertise is scarce (and expensive). In industry and commerce this is rather common but how this fits with the energy saving ordinance and residential buildings ...

The question remains, why? What advantage is this supposed to have?

Basically, it seems to be significantly cheaper and similarly energy-efficient (according to the energy consultant)... The problem with the thermal bridges is known to us but should be solvable.

Basically, it seems to be significantly cheaper

Cheaper than what? Solid construction? Prefabricated wood construction?

Regardless, if that were the case, it would be much more popular. No one has money to give away.

and thereby (according to the energy consultant) similarly energy efficient...

According to this, the energy consultant should be able to provide the manufacturers with his reliable data, or did he just read it once in the Journal for the Modern Professional?