SCR · Selective catalytic reduction
The exhaust aftertreatment that strips NOx from engines and turbines; sizing it in at design time is far cheaper than retrofitting it under enforcement.
Current numbers
~1 GW / 29 unitsGE Vernova LM2500XPRESS aeroderivative turbines for Crusoe, SCR-equipped — illustrative of SCR-on-bridge-power scale
~5 ppm -> sub-2 ppmNOx from a high-utilization natural-gas turbine with combustion controls + SCR (NSPS bar); 2026 SCR platforms market sub-2 ppm