DTE Electric Company

What This Utility Data Tells You

DTE Electric Company is an investor-owned utility operating in Michigan under EIA identifier 5109. It reports service to approximately 2,266,484 customer accounts and generated about $5.76 billion in annual electric revenue, with a service footprint spanning 343 ZIP codes. As an investor-owned utility, it operates under state public utility commission oversight that reviews rate cases and reliability performance.

In 2023, the average DTE Electric Company customer experienced 1542.3 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. Excluding major weather events from that total, that lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. Over the same period, SAIFI (outage events per customer) was 1.72, putting the typical customer at roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 156.8 minutes, the gap between that figure and the headline 1542.3 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for DTE Electric Company, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 351.8 to 1542.3 minutes, which may reflect either worsening weather exposure or delayed grid modernization.