SAIDI
33 min per year
Mean outage duration per year (2023)
City of Zeeland - (MI) is a municipally-owned utility operating in Michigan under EIA identifier 21158. It reports service to approximately 6,954 customer accounts and generated about $0.04 billion in annual electric revenue, with a service footprint spanning 1 ZIP code. Municipal ownership means a local board or city council typically oversees this utility, and it is exempt from federal income tax.
In 2023, the average City of Zeeland - (MI) customer experienced 33.4 minutes of power interruptions, a metric called SAIDI (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 0.26, putting the typical customer at roughly 0 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 13.5 minutes, the gap between that figure and the headline 33.4 reveals how much weather, not day-to-day infrastructure, drove outages.
City of Zeeland - (MI) has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. SAIDI dropped from 66.8 to 33.4 minutes across that span, a direction regulators and prospective customers tend to watch closely.
SAIDI
33 min per year
Mean outage duration per year (2023)
SAIFI
0.26 interruptions/yr
Events per customer (2023)
Customers
6,954
Customers across Michigan
33 outage minutes per customer annually
Annual minutes without electric service (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 66.8 | 37.6 | 0.691 | 6,863 |
| 2021 | 3.8 | 3.8 | 0.109 | 6,876 |
| 2022 | 2.0 | 2.0 | 0.011 | 6,917 |
| 2023 | 33.4 | 13.5 | 0.263 | 6,966 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
City of Zeeland - (MI) serves 1 ZIP code in Michigan.
City of Zeeland - (MI) had a SAIDI of 33.4 minutes in 2023 including major weather events, but 13.5 minutes excluding them (the IEEE-standard measure of day-to-day reliability, the gap reflects a major storm that year, not chronic performance). Excluding major storm impacts, this beats the national average, a sign of above-average reliability.
City of Zeeland - (MI) is classified as a Municipal serving Michigan.
City of Zeeland - (MI) serves approximately 6,954 customers in Michigan.
City of Zeeland - (MI) has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. 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.