The Michigan Public Service Commission is releasing a comprehensive audit on reliability by Consumers Energy and DTE Energy.
The audit was conducted by Pennsylvania-based The Liberty Consulting Group.
The goal of the audit was to uncover the cause of slow service restoration and lagging reliability.
The audit found that almost 500,000 customers experiences a power outage that lasted more than eight hours last year.
Around 158,000 customers experienced an outage that lasted more than two days.
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