(Richmond, IN)--Richmond Power and Light is considering a rate increase. It’s the result of a Cost of Service study done by an independent, third-party firm. "They are recommending we do some kind of increase," said RP&L General Manager Randy Baker. A letter is being distributed the Wayne County Area Chamber of Commerce and EDC indicating the rate increase would be $4-5 per month for the average residential customer. One reason for the increase is the cost of remediating ash that’s been at RP&L for decades. "Rough estimates we've got at this point go as low as $18 million and as high as $55 million depending on how the remediation goes and what you have to do with the ash," Baker explained. The last RP&L rate increase came way back in 2005.