Gas with solar thermal? Or heat pump with photovoltaics? Consultation

Electricity export balance, so more exported than imported:

2017 55 TW
2018 51 TW
2019 36 TW

In 2017, 27 TW were imported.
For 2018/19, I have no data on this.

You wrote you have a gas heating system and additionally a heat pump for cooling, did I read that wrong now

No, you understood that completely correctly.

No, you understood that completely correctly.

Would you like to write something about it... I'm still at the beginning but I’m hearing that for the first time. Why did you do that, economically it certainly isn't, is it?

I occasionally deal with all kinds of heating/cooling systems professionally and for this exact reason also have a gas boiler in the house as the primary heat source. The heat pump is used for cooling because the summers are getting hotter and the effect of cooling only through the underfloor heating is not worth mentioning. Economically in terms of finance it makes sense in our case, as the investment costs were manageable and the operating costs are around 1000 per year for both. The temperature in the house is consistently 22-24° summer and winter.

I find a 35% price increase for gas over 6 years already comparatively significant.

You assume that the basic price for gas remains the same and that these ~1.6 cents are added on top. That’s what your crystal ball says.
Mine says that something will happen to the gas price when the Russian at the other end of Nordstream II opens the gas tap wide. Everyone can imagine what those additional 100 billion m³ of H-gas will do to the gas price.

yes, it will, and noticeably so.

Your entire argument obviously rests on the simplification that the electricity price consists exclusively of the costs for the exchange electricity price and the Renewable Energy Act surcharge. That currently accounts for barely ~40% of the working price. The exploding grid fees and concession costs caused by the "All-Electric Society" you conveniently leave out. However, these currently make up 25% of the electricity price and will, as mentioned, skyrocket in the next few years and more than just eat up the few cents more from the Renewable Energy Act surcharge. That’s what my crystal ball says.

The heat pump is used for cooling because the summers are getting hotter and the effect is negligible with just the underfloor heating cooling.

I am also interested in that. How did you do it, is the heat pump connected to the underfloor heating in summer?