[Henk]

Here in the Netherlands the panels are subsidised too, you can claim the VAT (21%) back from the government.
Also we have no use for batteries (yet) because we can 'give" the electricity back to the grid. It's a net som in the end, what you use will be deducted from what you generate. This means that we can still run the washing machine at night, or use electricity in winter compensated by the surplus in summer.

We generate between 3400 and 3800 kWh per year, our use is about 2200 kWh, we get money for the surplus although it is not much, currently about 8 cent per Wh. In the end it will lower our gas bill (yes we're still on gas).

Since more and more people place solar panels the electricity companies run into problems, on a sunny day the current grid can not handle it anymore. The investments needed to improve the grid are enormous so things are starting to change. The government decided to make an end to the net sum arrangement per 2027, means we'll have to get a battery. Luckily the technology is developing fast, so in a couple of years the batteries will be able to store more for less money.

Also the privatised energy companies now start to charge customers for feeding back into the grid.

Electrical cars are (were) very popular, in the Netherlands the low milage is not a problem because the distances are low and we have a lot of charging points, many companies offer the possibility to charge at work. However the demand for electric cars is dropping, and in Germany even by 10% or so probably because they stopped subsidising. 

I myself have been looking at an electrical car but decided not to, I still think the milage is to low. When we were buying a new(er) car for SWMBO I talked to the sales representative, they had a BMW I4 in the showroom. This car is advertised as being able to do about 500km on a load, depending on the model. I asked him what the experience of his customers is, he told me that 500km is possible in perfect conditions but on the average the range is more like 300km. To get to my work in Hannover (Germany) I have to drive 360km single trip. With an electrical car I will need to charge (up to 80% in 30 minutes) once or twice. that means an hour delay on a 3 1/2 hour trip. So for the moment I will be keeping my petrol car, despite the fact that I can charge an electrical car for free!