Power comes a) from another place in the European grid where it's sunny or windy, and/or b) storage. a) works decently well today, b) has room for improvement,

Power comes a) from another place in the European grid where it's sunny or windy, and/or b) storage. a) works decently well today, b) has room for improvement, but demand for storage is low, since we don't have a lot of surplus energy that we could put into storage. Right now it's pretty much always easier to turn down the fossil fuel plants when renewables are generating a lot, so that's what we do.