SAIDI
158 min per year
Mean outage duration per year (2023)
What This Utility Data Tells You
City of Marquette - (MI) is a municipally-owned utility operating in Michigan under EIA identifier 11701. It reports service to approximately 17,128 customer accounts and generated about $0.04 billion in annual electric revenue, with a service footprint spanning 1 ZIP code. As a municipal utility, it is typically governed by a local board or city council and is exempt from federal income tax.
In 2023, the average City of Marquette - (MI) customer experienced 158.0 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. SAIFI, the average number of outage events per customer, was 1.40 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 48.9 minutes, the gap between that figure and the headline 158.0 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for City of Marquette - (MI), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI climbed from 79.8 to 158.0 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.
SAIFI
1.40 interruptions/yr
Outage frequency (2023)
Customers
17,128
Customers across Michigan
SAIDI vs. National Average (180 min) 39.5%
158 minutes per customer per year
Power-out minutes per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 79.8 | 16.9 | 0.831 | 17,005 |
| 2021 | 41.9 | 13.4 | 0.520 | 17,068 |
| 2022 | 64.9 | 19.6 | 0.600 | 17,076 |
| 2023 | 158.0 | 48.9 | 1.401 | 17,174 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
City of Marquette - (MI) serves 1 ZIP code in Michigan.
49855
Frequently Asked Questions
How reliable is City of Marquette - (MI)?
City of Marquette - (MI) had a SAIDI of 158.0 minutes in 2023 including major weather events, but 48.9 minutes excluding them (the IEEE-standard measure of day-to-day reliability, the gap reflects a major storm that year, not chronic performance). Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.
What type of utility is City of Marquette - (MI)?
City of Marquette - (MI) is classified as a Municipal serving Michigan.
How many customers does City of Marquette - (MI) serve?
City of Marquette - (MI) serves approximately 17,128 customers in Michigan.
How has City of Marquette - (MI)'s reliability changed over time?
City of Marquette - (MI) has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.
Utility Profile
- Type
- Municipal
- State
- Michigan
- Customers
- 17,128
- Annual Revenue
- $0.04B
- EIA ID
- 11701
Explore
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.