"Nevertheless, the turbine generated nitrogen oxides and the challenge of limiting them proved an ongoing problem throughout development."
If the amount produced were low, I doubt it "proved an ongoing problem"
Also: https://wpweb2.tepper.cmu.edu/rlang/RenewElec/CEIC_White_Pap...:
"Gas turbines operate best at full-power steady state conditions where they are at their highest fuel and emissions efficiencies. Deviations away from this tuned set point result in significant inefficiencies (particularly with NOx emissions)"
