It offers the prospect of 14 hours' generation a day at peak output times as predictable as dawn and dusk.

Each rotor has a peak output of 10 megawatt hours.

By that time, with the sun lower in the sky, panels would be generating well below their peak output.

Since the supply of fuel (i.e. water) remains unchanged, the uprated dam obtains a higher peak output in exchange for a lower capacity factor.

Its 24 turbines reach peak output at 240 megawatts and average 62 megawatts, a capacity factor of approximately 26%.