SAIDI
168 min per year
Average outage minutes (2023)
Northern States Power Co - Minnesota is an investor-owned utility operating in Minnesota under EIA identifier 13781. It reports service to approximately 1,357,170 customer accounts and generated about $3.89 billion in annual electric revenue, with a service footprint spanning 500 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 Northern States Power Co - Minnesota customer experienced 168.4 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that is comfortably under the 120–180 minute national benchmark range, a sign of solid grid resilience and quick outage response. Over the same period, SAIFI (outage events per customer) was 1.06, putting the typical customer at roughly 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 83.5 minutes, and the spread against the headline 168.4 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 - Minnesota, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 134.2 to 168.4 minutes, which may reflect either worsening weather exposure or delayed grid modernization.
SAIDI
168 min per year
Average outage minutes (2023)
SAIFI
1.06 interruptions/yr
Events per customer (2023)
Customers
1,357,170
Minnesota service territory
168 minutes per customer per year
Power-out minutes per year (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 134.2 | 96.5 | 1.074 | 1,295,881 |
| 2021 | 129.9 | 92.3 | 1.042 | 1,311,844 |
| 2022 | 184.2 | 90.0 | 1.083 | 1,328,578 |
| 2023 | 168.4 | 83.5 | 1.060 | 1,341,426 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Northern States Power Co - Minnesota serves 500 ZIP codes in Minnesota.
Northern States Power Co - Minnesota had a SAIDI of 168.4 minutes in 2023 including major weather events, but 83.5 minutes excluding them (the IEEE-standard day-to-day reliability measure, the difference points to a major storm that year rather than an ongoing problem). Excluding major weather events, this is below the national average, indicating above-average reliability.
Northern States Power Co - Minnesota is classified as a IOU serving Minnesota.
Northern States Power Co - Minnesota serves approximately 1,357,170 customers in Minnesota.
Northern States Power Co - Minnesota has 4 years of reliability data (2020-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.
Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.