Sent this afternoon by Seattle City Light:

On Thursday, May 28, Seattle City Light discovered that certain customers who were billed on May 27 accidentally received incorrect billing statements through the eBilling online payment service. No Social Security number, bank account, credit card, or debit card information was involved, and this will not result in any disruption of service to customers. Any payments customers made were applied to the correct accounts.

The problem was caused by an internal, technical error. We are investigating and working with a team of specialists to determine what happened. We will provide an update when further information is available.

Until this technical error has been resolved, the eBilling system has been taken offline. However, customers may still make an online payment through the “one-time payment” system on our website, which has not been affected. Our call center staff will be available to answer questions on Sunday from noon to 5 p.m., and during normal operating hours Monday through Friday.

We sincerely apologize for any inconvenience this might cause our customers. We appreciate our customers’ patience as we work to resolve this issue.