Grid reliability · 2024 · 50 reporting utilities

Power outages in Texas

The utilities that reported here serve 9,400,350 customers between them, not the whole state. Weighted by customer count, they averaged 2.6 hr without power in an ordinary year and 27 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 91% of the outage time Texas recorded once they are counted: 27 hr against 2.6 hr without them, a factor of 10.5×. 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 49 utilities that filed both figures of the 50 reporting here, 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 year2.6 hr15 of 51 jurisdictions, longest first · 49 filings

With major events27 hrStorms, ice, and fires included as filed · 50 filings

Interruptions a year1.4×Ordinary year; 2.3× with major events

The bill sideWhat solar offsetsRates and modelled output by utility

The utilities behind the average

Each of Texas’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 49 filings and the storm-inclusive average from 50 filings, out of 50 filings that published an outage figure at all. Those two sets are not the same utilities, so the two columns cannot be compared filer by filer. 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
CenterPoint Energy	2,847,806	2.5 hr	72 hr	1.6×
City of San Antonio - (TX)	938,905	62 min	74 min	1.1×
AEP Texas Central Company	913,164	2.5 hr	3.8 hr	1.5×
Austin Energy	557,039	76 min	92 min	0.9×
Entergy Texas Inc.	526,491	5.1 hr	29 hr	2.1×
Pedernales Electric Coop, Inc	425,109	57 min	57 min	0.8×
El Paso Electric Co	357,299	56 min	56 min	0.7×
Denton County Elec Coop, Inc	319,523	27 min	44 min	0.4×
Southwestern Public Service Co	268,277	116 min	3.3 hr	1.1×
AEP Texas North Company	199,119	103 min	108 min	1.1×
Southwestern Electric Power Co	192,067	3.9 hr	18 hr	2.0×
Tri-County Electric Coop, Inc (TX)	151,642	111 min	2.2 hr	1.1×
Magic Valley Electric Coop Inc	145,755	116 min	2.0 hr	not reported
Bluebonnet Electric Coop, Inc	132,597	117 min	3.8 hr	1.3×
United Electric Coop Service Inc - (TX)	105,631	112 min	112 min	1.2×
Guadalupe Valley Elec Coop Inc	103,579	2.2 hr	3.3 hr	1.1×
Sam Houston Electric Coop Inc	93,486	6.3 hr	76 hr	not reported
Farmers Electric Coop, Inc - (TX)	90,402	65 min	2.2 hr	1.0×
Trinity Valley Elec Coop Inc	85,275	4.5 hr	17 hr	2.5×
City of Denton - (TX)	69,105	23 min	81 min	0.3×
City of New Braunfels - (TX)	57,122	43 min	76 min	0.7×
Brownsville Public Utilities Board	55,884	76 min	2.7 hr	1.8×
Upshur Rural Elec Coop Corp	50,178	21 hr	23 hr	6.9×
Central Texas Elec Coop, Inc	48,298	2.2 hr	2.4 hr	1.7×
City of College Station - (TX)	45,821	16 min	23 min	0.2×
Deep East Texas Elec Coop Inc	45,255	20 hr	55 hr	not reported
Bandera Electric Coop, Inc	41,932	62 min	76 min	0.6×
Wood County Electric Coop, Inc	41,521	18 hr	23 hr	2.3×
San Bernard Electric Coop, Inc	36,644	2.7 hr	21 hr	1.7×
Medina Electric Coop, Inc	36,166	3.9 hr	3.9 hr	2.1×
HILCO Electric Cooperative, Inc.	35,196	2.0 hr	2.1 hr	1.3×
City of San Marcos - (TX)	25,753	not reported	2.1 hr	not reported
Victoria Electric Coop, Inc	24,936	3.2 hr	4.5 hr	2.3×
Heart of Texas Electric Coop	24,317	5.0 hr	6.0 hr	2.0×
Kerrville Public Utility Board	24,230	19 min	27 min	0.3×
Lyntegar Electric Coop, Inc	23,862	3.1 hr	3.1 hr	not reported
Jasper-Newton Elec Coop, Inc	23,788	25 hr	40 hr	4.9×
Rusk County Electric Coop, Inc	23,513	7.2 hr	64 hr	not reported
Cherokee County Elec Coop Assn - (TX)	22,405	11 hr	45 hr	4.7×
Navasota Valley Elec Coop, Inc	21,615	14 hr	29 hr	3.6×
Taylor Electric Coop Inc - (TX)	20,932	4.7 hr	6.2 hr	3.1×
Nueces Electric Cooperative	20,733	2.8 hr	7.3 hr	1.3×
Cooke County Elec Coop Assn	18,299	3.0 hr	4.8 hr	1.6×
City of Floresville	18,061	64 min	64 min	0.7×
City of Greenville - (TX)	17,201	16 min	83 min	0.3×
Concho Valley Elec Coop Inc	16,031	6.5 hr	6.5 hr	2.9×
Rio Grande Electric Coop, Inc	15,321	3.9 hr	5.5 hr	not reported
Deaf Smith Electric Coop, Inc	15,312	3.7 hr	4.8 hr	1.8×
Bartlett Electric Coop, Inc	15,253	2.3 hr	3.2 hr	1.1×
San Patricio Electric Coop Inc	12,500	3.3 hr	3.3 hr	2.1×

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.