Distributed generation is expanding fast — microgrids, renewable firming, remote sites, backup fleets — and the constraint is rarely the engine. It’s the air permit. NOx is what regulators cap, and Selective Catalytic Reduction (SCR) is the technology that brings it down far enough to get a site approved and keep it running. 

AERINOX builds SCR systems for stationary diesel and natural gas engines and turbines, sized for a single genset or a multi-engine campus, in backup, peak, or prime service. Deeper NOx reduction buys permitted run hours, and on a constrained site it can buy additional gensets — which makes the SCR system a decision about what you’re allowed to build, not just a box in the exhaust.  

Around that SCR core, we integrate Oxidation Catalysts (Oxicats) for CO and VOC, Diesel Particulate Filters (DPFs) for particulate matter, and silencing where noise limits apply, so one supplier covers everything from the exhaust outlet to the stack. Every system is engineered to your engine, your site, and your permit conditions, and performs to the limits you specified — EPA, Tier 4 Final, the Clean Air Act, or whatever your permit sets.