During the PSC investigation, the energy company must submit data and reports for the next couple of months that includes numbers of customers who received two or more estimated bills, the number of meter readers employed, and the types of complaints received by the Potomac Edison.
Company officials say they're cooperating with the full investigation.
"We're working to make sure that the PSC has all the information that they've asked for and that they need," said Todd Meyers, Potomac Edison spokesman. "And of course, whatever public hearings there are we'll be attending the public hearings."
Meyers says they're working to fix the problem.
"We're confident we have enough meter readers to do the job out there," said Meyers.
Potomac Energy officials say if residents have any questions or concerns about their energy bills, they should reach out to the company at 1-(800) 686-0011.