Install qualifying energy efficient equipment and Indianola Municipal Utilities will apply a credit to your city utility account! Additionally, non-residential customers may also receive a credit on their city utility account for installing energy efficient lighting, provided you have obtained pre-approval from Indianola Municipal Utilities. There is a maximum annual limit to the rebate dollars a residential or non-residential customer may receive. Over the course of one year, no customer may receive more than $2500 in rebates.