48% of its electricity this summer I'd believe, the whole year is unlikely. The crunch is winter when there is near-zero sunlight. Solar Panels in Northern Europe is waste of money.
Additionally in the winter we have complementary wind production from our windfarms.
For ~9 months of the year. For winter you need some other form of production that you can turn on at demand.
For example a panel in Helsinki produces less than 1% of its nominal output in the darkest months of winter.
edit: Just go and look at https://www.fingrid.fi/en/electricity-market-information/sol... if you check December of 2021 you can see that the avg output was ~2MWh/h with solar 395MW of capacity installed at the end of 2021.