An additional issue is that demand needs to be fully met by supply also in times when there is a shortfall from variable renewable energy sources (e.g. as a result of less wind or sun at a given time).
Lisaks peab nudlus olema tielikult kaetud pakkumisega ka siis, kui muutuva vimsusega energiaallikaid napib (nt kui teatud perioodil on vhe tuult vi pikest).