“PEMS are the next level of emission monitoring in a cost effective and regulatory compliant manner. Compared to the traditional CEMS, PEMS do not use hardware-based sensors to measure emissions, but instead use unique algorithms to determine the emissions signature of an engine, based on the input parameters.
The digital models include Siemens Energy’s unique OEM experience, allowing operators to significantly reduce the CAPEX and OPEX of emissions measurement activities. PEMS can be operated as redundant systems next to CEMS or as standalone certified systems without CEMS."