Negative electricity prices occurred in Switzerland for a few hours the other day - just a few months after electricity prices reached absolute record highs. Private consumers in Switzerland, however, do not benefit directly from the novel phenomenon.
On windy and sunny Sundays, when wind turbines and photovoltaic systems produce a lot of electricity but little is needed, European electricity prices, and thus also Swiss prices, temporarily fall into the red.
batteries do not have enougt capacity. The can bypass a day - maybe two. However, we need a solution to store energy during the summer to use it during winter. And as for now, this is only possible with pumped storage power plants.