In the aftermath of summer storms that resulted in widespread and prolonged power outages, Michigan's Public Service Commission requested comments on whether utilities should continue to rely exclusively on historical data when planning for extreme events. In comments filed jointly with the Sabin Center for Climate Change Law at Columbia Law School, and the Initiative for Climate Risk and Resilience Law, Policy Integrity suggested processes and tools that the Commission should direct utilities to use to identify and mitigate vulnerabilities to the impacts of extreme weather and climate change impacts more generally.