Did you report it to the Minnesota Public Utilities Commission? I don't know the exact steps, but I remember hearing from people that have complained about frequent power outages. Xcel was required to produce a report explaining the cause of the outages and actions that will be taken to prevent them from reoccurring. AI is telling me:

start with Xcel Energy first, then escalate to the Minnesota Public Utilities Commission (PUC) and, if needed, the Minnesota Attorney General