Optimize your refrigeration system to save Small changes in your refrigeration system's settings can mean big energy savings. Our Refrigeration Optimization program reduces operational costs and improves reliability. We offer an onsite study, implementation costs, and equipment rebates. To learn more, call 800-493-3299 or visit otpco.com/Refrigeration. OTTER TAIL POWER COMPANY f in Optimize your refrigeration system to save Small changes in your refrigeration system's settings can mean big energy savings . Our Refrigeration Optimization program reduces operational costs and improves reliability . We offer an onsite study , implementation costs , and equipment rebates . To learn more , call 800-493-3299 or visit otpco.com/Refrigeration . OTTER TAIL POWER COMPANY f in