Grid reliability · 2024 · 20 reporting utilities

Power outages in Oklahoma

The utilities that reported here serve 1,014,916 customers between them, not the whole state. Weighted by customer count, they averaged 2.0 hr without power in an ordinary year and 3.7 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 45% of the outage time Oklahoma recorded once they are counted: 3.7 hr against 2.0 hr without them, a factor of 1.8×. 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 20 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 year2.0 hr26 of 51 jurisdictions, longest first · 20 filings

With major events3.7 hrStorms, ice, and fires included as filed · 20 filings

Interruptions a year1.3×Ordinary year; 1.6× with major events

The bill sideWhat solar offsetsRates and modelled output by utility

The utilities behind the average

Each of Oklahoma’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 20 filings and the storm-inclusive average from 20 filings, out of 20 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
Public Service Co of Oklahoma	579,031	117 min	3.1 hr	1.3×
Oklahoma Electric Coop Inc	64,790	71 min	89 min	1.1×
City of Edmond - (OK)	44,461	82 min	107 min	1.3×
East Central Oklahoma Elec Coop Inc	37,090	2.8 hr	4.8 hr	1.4×
Canadian Valley Elec Coop, Inc	27,599	3.0 hr	9.8 hr	1.2×
Lake Region Electric Coop, Inc - (OK)	26,481	116 min	5.7 hr	1.1×
Central Rural Electric Cooperative, Inc	24,360	108 min	3.3 hr	1.1×
Cotton Electric Coop, Inc	23,594	3.7 hr	5.9 hr	2.3×
Kiamichi Electric Coop, Inc	23,013	5.5 hr	7.9 hr	2.4×
Stillwater Utilities Authority	22,191	58 min	2.4 hr	0.7×
Indian Electric Coop, Inc	20,643	64 min	84 min	0.5×
Cimarron Electric Coop	19,779	39 min	80 min	0.5×
Cookson Hills Elec Coop, Inc	18,978	2.3 hr	6.7 hr	0.8×
Southeastern Electric Coop Inc - (OK)	17,416	4.2 hr	5.4 hr	1.0×
City of Ponca City - (OK)	15,876	99 min	2.4 hr	1.0×
City of Claremore	13,327	104 min	3.0 hr	1.9×
Ozarks Electric Coop Corp - (AR)	12,930	68 min	5.4 hr	0.9×
Rural Electric Coop, Inc - (OK)	12,700	2.6 hr	11 hr	1.4×
Empire District Electric Co	5,928	88 min	19 hr	0.9×
Arkansas Valley Elec Coop Corp	4,729	2.3 hr	3.3 hr	1.4×

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.