Mälarenergi CHP Plant Automation with System 800xA

This document describes the history and automation evolution of Mälarenergi’s combined heat and power plant in Västerås, Sweden, from its 1963 startup to its current status as one of Europe’s most efficient plants, achieving 90% fuel energy utilization. It highlights the transition from manual controls and the SINDAC system to ABB’s System 800xA, which integrates all automation functions, enables real-time production optimization based on Nord Pool electricity prices, and supports environmental improvements including biofuel use, district cooling, and advanced emission scrubbing.