Predictive Emissions Monitoring System

A Predictive Emissions Monitoring System (PEMS) is a software-based system that estimates industrial air pollutant emissions using mathematical models, process data, and operational parameters rather than continuous physical stack measurements alone. Commonly used in power generation, manufacturing, and industrial facilities, PEMS helps operators monitor pollutants such as nitrogen oxides (NOx), sulfur dioxide (SO₂), carbon monoxide (CO), and carbon dioxide (CO₂) in real time for regulatory compliance and process optimization. Predictive Emissions Monitoring Systems are often used as alternatives or complements to Continuous Emissions Monitoring Systems (CEMS).