The American Public Power Association’s Reliable Public Power Provider program recognizes utilities that demonstrate high proficiency in reliability, safety, workforce development, and system improvement. Utilities keep the RP3 designation for three years.

An RP3 designation is a sign of a utility's dedication to operating an efficient, safe, and reliable distribution system. Being recognized by the RP3 program demonstrates to community leaders, governing board members, suppliers, and service providers a utility’s commitment to its employees, customers, and community. Currently 275 of the nation's more than 2,000 public power utilities hold a RP3 designation. 
There are three levels of recognition, Gold, Platinum and Diamond.  IPL has been awarded the Diamond award for the third consecutive cycle.