energy-charts.info provides a great overview over electricity generation by sector, renewable share and a lot of other data on the German electricity network. They also provide estimates for the next few hours and scenarios how the electricity network could look like in a few decades.
I assume it's merely that they import energy from neighbours.
Here's a map of who exported electricity in Europe in 2022, and who imported: https://www.powerengineeringint.com/wp-content/uploads/2023/03/EU-Interconnector-Map-H2-2022.jpg