LANSING, Mich. (AP) — The Lansing Board of Water and Light “fell short” in its duties to customers following a December ice storm, state utility regulators said in a review released Friday that also makes 30 recommendations to improve service.

The Michigan Public Service Commission reviewed both internal and independent reports written after the Dec. 21-22 storm, which led to power outages for 40,000 of the utility’s customers — some for up to 11 days. The company faced widespread public criticism for long telephone wait times and its overall communication efforts.