They could modulate the use of the molten salts according to the weather forecast or electricity grid prices/demand. I'm assuming Morocco doesn't have grid-leve

They could modulate the use of the molten salts according to the weather forecast or electricity grid prices/demand. I'm assuming Morocco doesn't have grid-level dynamic pricing but if they're forecasting clouds the day after sunlight they could maybe hang on to the hot salts over night and push the heat to the steam-generator the next day when demand spikes again.