Alliance and LG&E Confirm Industry-First IP CEMS Application Under US EPA Part 75
- Alliance Technical Group
- 2 hours ago
- 2 min read
A Strategic Partnership That's Paying Off
What began as a collaborative innovation between ESC Spectrum and EPRI has evolved into a defining capability within Alliance’s Continuous Emissions Monitoring Systems (CEMS) business unit, which acquired ESC Spectrum in July 2025. We didn't just expand our market leading CEMS capabilities; we strengthened our position as the industry's end-to-end provider for air emissions monitoring and reporting solutions.
EPA Part 75:Successful Application of IP CEMS at LG&E’s Cane Run Generating Station
Alliance and LG&E successfully installed and certified an Integrated Path (IP) CEMS on a gas turbine unit that is subject to 40 CFR Part 75, with relative accuracy certification completed in August 2025. This set the stage for a groundbreaking achievement: LG&E Cane Run became the first facility to successfully submit quarterly emission reports to the EPA via ECMPS using IP CEMS data while their conventional CEMS was out of service—a historic first under Part 75.
This milestone demonstrates that IP CEMS isn't just a backup technology; it's a viable, EPA-recognized solution for emissions monitoring and reporting.
Adding to this momentum, the Clean Air Power Division (CAPD) of the EPA recently made changes to their Part 75 technical manual that sanctions the methodology used by our IP CEMS and removes the requirement for obtaining P75 Administrator approval for use of this methodology. This regulatory endorsement opens doors for utilities and industrial facilities nationwide to adopt this innovative technology with confidence.
The IP CEMS Advantage
Traditional CEM systems have served the industry for decades, but they come with inherent limitations, including sample system biases, potential failure points, and significant O&M costs. Using Unisearch Associates, Inc. optical analyzers to measure gas concentrations along an optical path across a stack or duct downstream of an emissions source, our IP CEMS delivers:
Faster, more representative measurements that provide real-time insights into your emissions profile
Elimination of sample system biases that can compromise data quality and regulatory compliance
Reduced failure mechanisms that translate to better uptime and reliability
Lower O&M costs and reduced operational burden, freeing up your team to focus on what matters most
For facilities struggling with aging CEMS infrastructure, facing budget constraints, or simply seeking to enhance their emissions monitoring capabilities, IP CEMS offers a path forward that doesn't require compromise.
Have questions about IP CEMS or how it might fit your facility's needs? Let's start a conversation ⮕
Want to learn more?
Watch our in-depth interview with the IP CEMS experts below, featuring the same innovative team that developed this technology at ESC Spectrum and now continues to advance it as part of Alliance Technical Group.
Alliance Technical Group is committed to advancing air quality monitoring through innovative technologies and strategic partnerships. Our IP CEMS solution represents the next generation of emissions monitoring—delivering accuracy, reliability, and cost-effectiveness in a single integrated platform.
