Insulate my house, or otherwise?

The farm I bought has only 5 cm insulation in the walls. The wood covering the outside walls is from 2012, so still very new. If I would have owned the house in 2012 and had removed the old wood and nail new wood on the outside, I would have insulated at the same time with 30-40 cm in the outside walls and even more on the ceilings.

My idea up to now has been to maybe cover the house with a greenhouse, like the people in this video in Sweden did. Of course the municipality has to agree with the greenhouse cover, so far from sure if it will be possible... besides the costs, etc.

https://www.youtube.com/watch?v=30ghnDOFbNQ&t=606s



In the north of Norway a new house was build and covered by glass.

https://www.thelocal.no/20130827/norway-couple-build-arctic-hobbit-house-in-dome
https://www.youtube.com/watch?time_continue=18&v=k0Mpu2Y0_U4&feature=emb_logo



In the Netherlands the following - temporarily - house was build according to the same system, but with a greenhouse on poles. I like the use of wood here.

https://www.youtube.com/watch?v=WxbX87gxmXQ



Another idea I have and to explore more is if it would be possible to warm the house for most of the year by solar energy. The solar panels would then be placed on the south wall of the garage. The months without or little sun, should then be energized by wind energy. I will start trying this out in small, on the guest house and guest sailing boat.


Time will tell how my dream house will look like. Maybe you have some other good idea? Please, do let me know.