Over 30 Years of Leadership in Emissions & Acoustic Engineering
E.I. Williams is a leading North American provider of advanced Tier 4 Final emissions control systems and industrial silencers. Built on a legacy of precision engineering and strengthened by our close partnership with UK-based Industrial Marine & Silencers Ltd. (IMS), we deliver cutting-edge solutions across the USA and Canada. From airless SCR technology and Diesel Particulate Filters (DPFs) to complete generator exhaust accessories, our systems are designed to reduce NOx, particulate matter, and noise—ensuring full emission compliance in mission-critical industries.
Company History & Expertise
Founded in the early 1990s, E.I. Williams began as a designer of high-performance generator exhaust silencers. Today, our scope includes complete emissions control packages, including airless SCR, DEF systems, and monitoring for Tier 4 Final compliance.
We operate custom fabrication facilities in
Every system is designed-to-order, performance-tested, and delivered ready for plug-and-play integration.
Strategic Partnership with IMS (UK)
Founded in the early 1990s, E.I. Williams began as a designer of high-performance generator exhaust silencers. Today, our scope includes complete emissions control packages, including airless SCR, DEF systems, and monitoring for Tier 4 Final compliance.
This collaboration enables
A Strategic Partnership with Purpose
The following statements, shared as part of the official announcement, capture the shared vision and strength of the collaboration between E.I. Williams and Industrial & Marine Silencers Ltd. — a partnership built on innovation, engineering expertise, and global reach.
“We believe this partnership will help to generate industry leading technology products and platforms. With our extensive portfolio of projects, stretching over the past 20 years, and proven SCR (Selective Catalytic Reduction) technology operating across Europe and beyond, we look forward to working with all at E.I. Williams in ensuring we both enter the US and Canadian market with product and service support that can ensure we strengthen both companies worldwide leading status and take that to the next level and beyond.”
— Dan Gallacher, IMS UK, International Sales Manager
“For those involved with generators used as either primary or standby power sources for facilities, peak shaving applications, curtailment/interruptible rate programs, and supplying power to the electrical grid, our combined technology offers substantial benefits. They will gain from a cost-effective, proven solution that ensures reliability and peace of mind while simultaneously meeting and exceeding the Tier 4 compliance standards. The IMS / E.I. Williams closed-loop SCR system significantly reduces the total cost of ownership for end-users. Additionally, it provides integrators with the most compact design in the industry, setting a new benchmark for efficiency and performance.”
— Misagh Tabrizi, E.I. Williams, Director of Engineering
“We believe this partnership will help to generate industry leading technology products and platforms. With our extensive portfolio of projects, stretching over the past 20 years, and proven SCR (Selective Catalytic Reduction) technology operating across Europe and beyond, we look forward to working with all at E.I. Williams in ensuring we both enter the US and Canadian market with product and service support that can ensure we strengthen both companies worldwide leading status and take that to the next level and beyond.”
— Dan Gallacher, IMS UK, International Sales Manager
“For those involved with generators used as either primary or standby power sources for facilities, peak shaving applications, curtailment/interruptible rate programs, and supplying power to the electrical grid, our combined technology offers substantial benefits. They will gain from a cost-effective, proven solution that ensures reliability and peace of mind while simultaneously meeting and exceeding the Tier 4 compliance standards. The IMS / E.I. Williams closed-loop SCR system significantly reduces the total cost of ownership for end-users. Additionally, it provides integrators with the most compact design in the industry, setting a new benchmark for efficiency and performance.”
— Misagh Tabrizi, E.I. Williams, Director of Engineering
Industries We Serve
Our turnkey emissions solutions are used across
We serve sectors where low noise, low NOx output, and minimal service downtime are mission-critical.
Our Mission & Values
Driven to deliver smart, sustainable emissions control solutions that improve environmental and operational performance.
Ready to collaborate with a proven Tier 4 partner?
Let’s build your next low-emission diesel power solution together.