ESI started in 1978 in Chattanooga, Tennessee. We began with some small construction contracts to erect tri-fuel boilers in North and South Carolina. With the expertise of a handful of young field and start up engineers hired away from other companies, ESI not only successfully completed the boiler installations but also began to execute additional scopes of work for the facility utilities. Starting with wood-fired boilers, we moved into air quality control systems, then added power generation, material handling, water treatment and other utility auxiliary systems. ESI has grown its portfolio to include the entire utility island.