Energy Problem!

So, I've been doing some thinking... When I bought my house the energy crisis was just about to hit. Meaning: gas is crazy expensive and electricity is just really expensive.

Therefore I installed airco's and solar panels with the main purpose of keeping us warm throughout the cold months replacing the central heating system which uses natural gas. The graph shows what the panels generate vs what airco's use.

In the Netherlands you are considered a hero if you install solar panels, because apparently, in the long run, that is how we will save the planet.

I noticed that the solar panels are very effective in the summer months (lots of sun obviously) while the airco's are very effective in keeping me warm in the winter months. Luckily in 2023 the winter was very sunny.

Still the panels don't generate (or barely) enough to keep the airco's running during the day. Not taking into account all the other power consumers in the house (washing machine, dish washer, fridge, tumble dryer, etc).

So in short: WAAAAYYY to much energy in summer and not enough in the winter. Installing a battery of 10 kWh next to the house doesn't make any sense either looking at how much energy my house consumes in the winter time.

As a result we fall back to using 'dirty energy' generated by power stations or if you are lucky green energy generated by wind turbines (which also have a big impact on climate and environment)

Anybody an idea how I can store the energy generated in the summer (approximately 9MWh) and use it again in the winter?