Northern States Power Co

What This Utility Data Tells You

Northern States Power Co is an investor-owned utility operating in Michigan under EIA identifier 13780. It reports service to approximately 259,879 customer accounts and generated about $0.82 billion in annual electric revenue, with a service footprint spanning 217 ZIP codes. Investor ownership puts this utility under the regulatory authority of the state public utility commission, which reviews its rate requests and reliability record.

In 2023, the average Northern States Power Co customer experienced 245.2 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. SAIFI, the average number of outage events per customer, was 1.59 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 163.5 minutes, and the spread against the headline 245.2 indicates how much weather, versus routine infrastructure, drove the outage total.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Northern States Power Co, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 346.0 to 245.2 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.