You crazies actually trust the Sun to be there when you need it?! Ha!

And that's just a narrow stretch of the country that received the solar eclipse!

in the path of the eclipse

When there is only 50% totality, photovoltaic also makes 50% less. You just do not notice it when looking around, because your eyes adjust to the changed brightness. So a photovoltaic produces less for a longer time. What I found, for the 2017 eclipse, was that around 16GW were impacted with at most a reduction of 5GW in one moment.

He may be counting the 1 kW per square metre of sunlight that reaches the ground, not just the fraction we turn to electricity