[2] In 1937, IPL began a rural electrification program, running power lines to many areas outside Marion County.

[1] On April 25, 2021, the company's Eagle Valley Generating Station's Toshiba steam turbine was unable to resynchronize with the grid when it was restarted after a maintenance outage.

The problem was caused by a disconnected wire that "provided false indication to the control system".

Repairs to the resulting damage to the rotor and other components was hampered by incorrect wiring diagrams in the system manuals and will not be completed until November 2021.

The company's Petersburg Generating Station also was undergoing repairs during part of the time, causing AES to purchase $1 million of electricity to cover the shortage.