Question

2. A hydropower plant has two of the turbines each with 160 MW capacity that can be reversed and pump the water from the low to the high water reservoir. It is used for seasonal storage, and the high reservoir has a capacity of 3×109 m3 of water. The hydropower plant runs with a mean head of approximately H=500 m. Assuming that the efficiency of the turbines is 95%, Find how many days of stored energy this corresponds to when the electricity consumption is 120 TWh per year.

Answer 1