One Midwestern refinery needed to perform a replacement of their existing 480V motor control centre (MCC), however this would require two days of downtime for the refinery and potentially hundreds of thousands of dollars lost in revenue. They knew they would need critical loads to remain online without interruption while replacing the switchgear, but they weren’t exactly sure how to make that happen. Additionally, tight worksite space limited the number of generator sets requiring a balance against competing objectives.