The value you're after for this is known as "capacity factor" - https://en.wikipedia.org/wiki/Capacity_factor https://en.wikipedia.org/wiki/Capacity_factor > T

The value you're after for this is known as "capacity factor" - https://en.wikipedia.org/wiki/Capacity_factor https://en.wikipedia.org/wiki/Capacity_factor > The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy output over that period. For the US for the data from 2018 (what's in Wikipedia) Nuclear 92% Conv. Hydro 42% Wind 37% Solar PV 26% Solar CSP 23% Landfill Gas 73% Other biomass 49% Geothermal 77% Coal 54% Nat Gas CC 57% Nat Gas CT 11% Nat Gas ST 13% Petrol ST 13% Petrol CT 2%