Negative prices are mostly caused by unreasonable terms towards generation plants. E.g.: requiring the grid to take every kWh generated and paying a fixed price

Negative prices are mostly caused by unreasonable terms towards generation plants. E.g.: requiring the grid to take every kWh generated and paying a fixed price over a 20-year term. This of course encourages capacity to be built with no flexibility. Why not dump your solar power into the grid? You're getting paid, the state guarantees for that... the negative prices are someone's elses problem.