This case study presents Iluka Resources Limited’s successful adoption of the Energy-Mass-Balance (EMB) as the core method of energy analysis in its Synthetic Rutile facility in Iluka’s South West Operations, Western Australia. It discusses key aspects of Iluka’s experience, such as the EMB modelling approach, results achieved, lessons learned and the role the EMB will play in Iluka’s future energy improvement initiatives. This case study was developed as part of the Energy Efficiency Opportunities program.