The Oklahoma Municipal Power Authority (OMPA) offers loans for a variety of measures and equipment through its WISE Loan Program. This program encourages residential and commercial customers to utilize energy efficient equipment by providing below market-rate loans for equipment and service purchases. Eligible measures and equipment includes air conditioners, air-source heat pumps, dual fuel heat pumps, geothermal heat pumps, water heaters, a variety of insulation, lighting, fans, building controls, and general weatherization measures.