SAIDI
167 min per year
Mean outage duration per year (2023)
Webster Electric Coop is a member-owned electric cooperative operating in Missouri under EIA identifier 20318. It reports service to approximately 19,350 customer accounts and generated about $0.04 billion in annual electric revenue, with a service footprint spanning 19 ZIP codes. Being member-owned, this cooperative answers to its ratepayers rather than outside shareholders, a structure that tends to influence how rate cases and capital spending get decided.
In 2023, the average Webster Electric Coop customer experienced 167.0 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That falls inside the typical 120–180 minute national benchmark, in line with what most U.S. distribution utilities report. The SAIFI figure, which tracks average outage events per customer, came in at 1.20 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 118.0 minutes, and the spread against the headline 167.0 indicates how much weather, versus routine infrastructure, drove the outage total.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Webster Electric Coop, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI climbed from 99.9 to 167.0 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.
SAIDI
167 min per year
Mean outage duration per year (2023)
SAIFI
1.20 interruptions/yr
Events per customer (2023)
Customers
19,350
Missouri service territory
167 min/year per customer
Minutes without power per year (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 99.9 | 71.0 | 1.200 | - |
| 2021 | 92.6 | 82.0 | 1.100 | - |
| 2022 | 160.0 | 134.0 | 1.400 | - |
| 2023 | 167.0 | 118.0 | 1.200 | - |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Webster Electric Coop serves 19 ZIP codes in Missouri.
Webster Electric Coop had a SAIDI of 167.0 minutes in 2023. Excluding major weather events, this is near the national average.
Webster Electric Coop is classified as a Cooperative serving Missouri.
Webster Electric Coop serves approximately 19,350 customers in Missouri.
Webster Electric Coop 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.