[_FKS_]

Topaz is of the same magnitude as this Tamil Nadu plant, in terms of "rated power". However, many people seem to miss that "rated power" does not equal "actual output". Please see capacity factor [1].

For a solar plant like this one, the capacity is about at ~25%. If it was 100%, for a 650MW plant, you would get 650 * 365 * 24 = 5694 TWh / year. In practice, you will get 5694 * .25 = 1423 TWh / year.

If this was a nuclear plant, you would get 5694 * .90 = 5124 TWh / year. Continously, day and night. Without back-end storage required. Big difference.

[1] https://en.wikipedia.org/wiki/Capacity_factor