The Otter Tail Power Conservation Improvement Program is designed to help income qualified Otter Tail Power customers save money on their energy bills. Agency Energy Auditors perform an electric analysis and a few of the items provided for the household include: compact fluorescent bulbs, aerators, engine block heaters, refrigerator replacement, freezer replacement, and water heater replacement that can be put on off-peak. If electric is the primary heat, additional weatherization measures may be provided such as insulation and air sealing.