AUGUSTA, Maine (AP) The Maine Public Utilities Commission has concluded two Maine utilities responded “reasonably” in taking precautions according to best available weather forecasts against an intense 2017 storm that led to record blackouts.

The decision, which came in a unanimous vote Tuesday by the three commissioners, ends an investigation against Central Maine Power Co. and Emera Maine. The Portland Press Herald reports the investigation was meant to uncover whether or not the state’s utilities took correct steps to plan for the storm last October.

Roughly 467,000 CMP customers and 90,000 Emera customers lost power. Each company has been ordered to file a report by Dec. 1 outlining specific steps being taken to improve the accuracy of and customer access to its outage and power restoration reports.