Grid reliability · 2024 · 27 reporting utilities

Power outages in Missouri

The utilities that reported here serve 2,767,867 customers between them, not the whole state. Weighted by customer count, they averaged 107 min without power in an ordinary year and 3.5 hr once major events are counted. Each figure comes only from the filers that published it, and the counts are below.

What it means

Why there are two numbers

Across the utilities that filed both figures, major events account for 50% of the outage time Missouri recorded once they are counted: 3.5 hr against 107 min without them, a factor of 2.0×. Solar panels alone do not help during an outage, because a grid-tied array shuts down when the grid does, so riding through one is a battery question. This figure will not answer it: it is an annual average across a utility’s customers, not the length or the load of any single outage. What it does say is how much of the outage time here arrives with major events rather than on ordinary days.

The comparison is drawn from the 27 utilities that filed both figures, which is all of them, so both sides of the ratio describe the same set of customers. The two headline figures above are averaged over everyone who filed each one, so dividing them would not give this number.

Ordinary year107 min31 of 51 jurisdictions, longest first · 27 filings

With major events3.5 hrStorms, ice, and fires included as filed · 27 filings

Interruptions a year0.9×Ordinary year; 1.2× with major events

The bill sideWhat solar offsetsRates and modelled output by utility

The utilities behind the average

Each of Missouri’s figures is a customer-weighted average of the filings that carried that metric, not of the table as a whole: the ordinary-year average is built from 27 filings and the storm-inclusive average from 27 filings, out of 27 filings that published an outage figure at all. Those are the same utilities on both sides. A utility that filed without publishing a metric, or whose two major-event variants contradicted each other, is absent from that metric rather than counted as zero.

Reported interruption metrics for 2024, largest utility first.
Utility	Customers	Ordinary year	With major events	Interruptions
Union Electric Co - (MO)	1,283,126	94 min	2.5 hr	0.7×
Evergy Missouri West	346,863	119 min	5.1 hr	1.3×
Evergy Metro	311,001	104 min	6.7 hr	1.2×
Empire District Electric Co	166,833	2.4 hr	3.8 hr	1.2×
City Utilities of Springfield - (MO)	121,822	65 min	65 min	1.0×
Cuivre River Electric Coop Inc	73,195	2.2 hr	2.2 hr	1.3×
City of Columbia - (MO)	53,435	35 min	35 min	0.5×
Southwest Electric Coop, Inc	44,496	3.1 hr	4.1 hr	0.8×
Laclede Electric Coop, Inc	38,978	2.6 hr	6.1 hr	2.1×
Boone Electric Coop	35,400	50 min	2.1 hr	0.5×
Co-Mo Electric Coop Inc	33,686	74 min	2.0 hr	0.7×
Intercounty Electric Coop Assn - (MO)	31,988	3.0 hr	4.5 hr	1.4×
Citizens Electric Corporation - (MO)	27,830	85 min	2.4 hr	0.9×
Black River Electric Coop - (MO)	25,556	7.5 hr	19 hr	not reported
Platte-Clay Electric Coop, Inc	25,075	53 min	103 min	0.8×
Three Rivers Electric Coop	24,339	2.3 hr	2.3 hr	1.0×
Crawford Electric Coop, Inc	21,693	4.5 hr	5.9 hr	1.9×
West Central Electric Coop Inc - (MO)	15,446	114 min	2.8 hr	not reported
Farmers Electric Coop, Inc - (MO)	13,561	93 min	4.6 hr	0.7×
Carroll Electric Coop Corp - (AR)	11,793	2.2 hr	6.7 hr	1.9×
Central Missouri Elec Coop Inc	11,452	83 min	95 min	0.8×
City of Kirkwood - (MO)	10,456	2.2 hr	2.8 hr	1.1×
City of Rolla - (MO)	9,719	26 min	2.4 hr	0.9×
City of Hannibal - (MO)	8,692	35 min	59 min	0.6×
Consolidated Electric Coop	8,312	104 min	3.1 hr	0.8×
City of Carthage - (MO)	8,136	67 min	4.1 hr	2.4×
City of Monett - (MO)	4,984	38 min	62 min	0.5×

What this page is not

It is a state average of utility filings, not a measurement at any address. Each filing is itself an average over a whole service territory, so a rural feeder and a downtown network arrive here as one number, and nothing in this dataset says how far an individual address sits from it. Nothing here predicts a future year either, and a single severe storm can move a utility’s figure by an order of magnitude.

The methodology page states the sources, the definitions, and the limits. Back to the Grid Reliability Index

Source: U.S. Energy Information Administration, Form EIA-861 reliability file, data year 2024, covering 2024-01-01 through 2024-12-31. The snapshot covers no later period.