Some American Electric Power customers can expect to see single digit rate increases in their power bills. Thatâs as a result of a ruling today by the state Public Utilities Commission. PUCO spokesman Mathew Schilling says AEP will not be able to raise rates beyond a 12 percent cap. Thereâs going to be a rate cap on customersâ bills such that no customer should experience more than a 12 percent increase due to todayâs ruling. PUCO Chairman Todd Snitchler says the order ââ¦more evenly distributes the rate impacts among customers.â?