This is nameplate capacity: the power a generator can deliver, full on, under ideal conditions. Solar and wind always look great when measured in nameplate capacity, which is why this is done.

If you want to know how much electricity they will generate, you have to multiply by the capacity factor. Nuclear, for instance has a capacity factor of 0.9 in the US: it delivers 90% of its nameplate capacity in a given year.

Solar ranges between 0.08 and 0.15.