IOU Missouri

Evergy Missouri West

220min
SAIDI 2023
1.57
SAIFI 2023
343,879
Customers

What This Utility Data Tells You

Evergy Missouri West is a investor-owned utility operating in Missouri under EIA identifier 12698. It reports service to approximately 343,879 customer accounts and generated about $0.88 billion in annual electric revenue, with a service footprint spanning 191 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 Evergy Missouri West customer experienced 220.2 minutes of power interruptions — a metric called SAIDI (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 1.57 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 119.1 minutes — the gap between that figure and the headline 220.2 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Evergy Missouri West, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 247.9 to 220.2 minutes over that window — a meaningful direction for prospective customers and regulators watching capital investment outcomes. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.

SAIDI

220 min per year

Average outage minutes (2023)

SAIFI

1.57 interruptions/yr

Outage frequency (2023)

Customers

343,879

Served in Missouri

SAIDI vs. National Average (180 min) 55.1%

220 minutes per customer per year

Evergy Missouri West SAIDI

Minutes without power per year (2023)

220 SAIDI220 SAIDINat. avg 120120SAIDI220SAIDI

Below Average

Reliability Trend (2020–2023)

Year SAIDI (min) SAIDI nMED SAIFI Customers
2020 247.9 120.8 1.470 313,681
2021 310.5 137.4 1.860 335,285
2022 171.1 124.4 1.385 338,863
2023 220.2 119.1 1.568 343,960

SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.

Service Area

Evergy Missouri West serves 191 ZIP codes in Missouri.

6401164012640136401464015640166401764018640196402064022640286402964030640346403564036640406405764061640636406464065640666406764069640706407464075640766407764078640796408064081640826408364085640866408864089640906409364096640976409864133641346413864139641456414764152641536415464163641646440164402644206442164423644246442664427644286443064431644326443464436644376443964440644416444264443644446444564446644486444964451644536445464455644566445764459644616446364466644686447064471644736447464475644766447964480644816448264483644846448564487644896449064491644926449464496644986449964501645026450364504645056450664507645086460164625646326463564640646416464264648646526465464668646736467964683647016472064722647236472464725647266472864730647336473564738647396474064741647426474364744647466474764750647526475664759647616476264763647656476664767647696477064771647726477664778647796478064781647836478464788647906530165302653236532565332653356533665338653516535565785

Frequently Asked Questions

How reliable is Evergy Missouri West?

Evergy Missouri West had a SAIDI of 220.2 minutes in 2023, meaning the average customer experienced about 220 minutes of outages that year. This is near the national average.

What type of utility is Evergy Missouri West?

Evergy Missouri West is classified as a IOU serving Missouri. Investor-owned utilities (IOUs) are for-profit companies regulated by state public utility commissions.

What does SAIDI mean for Evergy Missouri West?

SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Evergy Missouri West experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Evergy Missouri West's SAIDI to that benchmark shows whether this utility is above or below average.

How many customers does Evergy Missouri West serve?

Evergy Missouri West serves approximately 343,879 customers in Missouri. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.

How has Evergy Missouri West's reliability changed over time?

Evergy Missouri West 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.

What is SAIDI without major event days?

SAIDI "without major event days" (SAIDI nMED) excludes outages caused by hurricanes, ice storms, and other catastrophic weather events. It better reflects day-to-day infrastructure reliability rather than vulnerability to extreme weather. Both standard SAIDI and SAIDI nMED are shown in the reliability trend table above.

Utility Profile

Type
IOU
State
Missouri
Customers
343,879
Annual Revenue
$0.88B
EIA ID
12698
Data Source: U.S. Energy Information Administration Form 861 annual electric power industry survey. ZIP service territory from OpenEI.

Related

Data sourced from official EIA reliability statistics and OpenEI utility rate database. See our methodology for details. Retrieved and formatted by PlainUtility Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Energy Information Administration (EIA) Form 861. Consult a qualified professional before making decisions based on this data.