They couldn't produce more energy in a year, since that is limited by the rainfall and dam height.
But with a redesign/upgrade, they could probably produce more power at peak times. That allows the dam to be used like a peaker plant, earning far more per MWh than a coal plant. As more wind and solar is deployed, the difference between the peak and average energy prices will only increase.
But with a redesign/upgrade, they could probably produce more power at peak times. That allows the dam to be used like a peaker plant, earning far more per MWh than a coal plant. As more wind and solar is deployed, the difference between the peak and average energy prices will only increase.