Navigating the Path to Near Zero: Proven Solutions for PowerGen 2026

In 2026, meeting Tier 4 Final is the baseline—but for high-density data centres and mission-critical facilities, the goal is often Lowest Achievable Emissions (LAER) to simplify permitting and meet aggressive ESG targets.

The Full Exhaust Ecosystem: From Engine Manifold to Stack

EIWilliams provides a comprehensive, one-stop exhaust line designed for the most demanding engines in the PowerGen space. Our suite of technologies includes:

• Selective Catalytic Reduction (SCR): High-efficiency NOx reduction (up to 98%+) using an airless DEF injection system that eliminates the need for on-site compressors. Presented by EIWIlliams/IMS as the next generation of NOx control in the US and Canada.

• Three-Way Catalysts (3WC): Optimized for rich-burn natural gas engines to simultaneously reduce NOx, CO, and hydrocarbons in an acoustical housing.

• DOC & DPF Systems:Advanced Diesel Oxidation Catalysts and Particulate Filters to eliminate soot and hazardous carbon monoxide of Diesel Engines.

• Industrial Silencers & Accessories: A full range of residential, critical, and hospital-grade silencers combined with all necessary bellows, flexes, and mounting hardware.

Tier4Final.com: Your Engineering Knowledge Hub

We believe that hardware is only half the battle. Through Tier4Final.com, we provide EPCs and OEMs with the educational tools needed to specify complex aftertreatment systems with confidence.

Educating the Industry: Our platform features a deep library of technical whitepapers, SCR checklists, and case studies detailing real-world applications in some of the world’s largest data centres.

How Tier4Final.com supports your projects:

• Proven Case Studies: Explore how we have solved backpressure and footprint challenges for multi-megawatt installations.
• Compliance Assurance: Access technical data that ensures your facility meets EPA, and local municipal air quality standards.
• Shortest Lead Times: Learn how our North American manufacturing footprint (USA & Canada) allows us to deliver customized exhaust lines faster than the competition.

Reliability Without Complexity

Our “Near Zero” solutions are engineered to be “Airless”—meaning our SCR systems do not require external air compressors. This reduces maintenance points and increases the overall reliability of the backup power system—a critical factor for Tier III and Tier IV data centres.

Planning your next power project?

Do not settle for “standard” compliance. Visit Tier4Final.com to download our latest case studies or meet the EIWilliams team at PowerGen to speak with us.