This project consisted in providing a multi-energy make-up air system fed by either solar, electrical or oil combustion input. This arrangement is operated through a computerized management system that continuously evaluates which energy option is preferable in relation with the plant's needs and requirements.

This project's main determining elements were :

• Upgrading of the make-up air to actual standards
• Use of a solar wall to preheat the incoming fresh air, with backup from electric coils to assure adequate heating in all conditions
• Addition of electric coils in the five existing oil fired hot air furnaces heating the building's periphery
• Installation of a computerized real-time energy management system that considers the plant's production power needs, the energy usage parameters and cost