Round Rock, Texas Power Outage Today

How reliable is Oncor service in Round Rock?

Oncor is an investor-owned utility with 4,013,062 customers. In 2024 its customers averaged 1.71 interruptions and 532 minutes (about 8.9 hours) without power, so the average outage lasted about 5.2 hours.

About 87% of that time came on major event days, the severe-weather days that utilities report separately. On ordinary days the average falls to 67 minutes. A handful of severe-weather days, not everyday faults, set this utility’s year.

The long average outage is the notable figure: when the lights went out for Oncor customers, they stayed out for about 5.2 hours on average, which is long enough to spoil refrigerated food and strain medical needs.

For comparison, Texas as a whole averaged 1,271 minutes and the United States 614 minutes. That puts Oncor below the state average, which is better.

Among the 70 utilities in Texas with at least 5,000 customers that report to the federal government, Oncor ranks 52nd for the fewest outage minutes (1 is best). Nationally, 20% of the 926 utilities of that size reported more outage minutes in 2024.

This utility reports with its own method rather than the IEEE standard, so compare its numbers with other utilities loosely.

These are the figures the utility itself reported to the US Energy Information Administration (Form EIA-861, 2024) and describe the whole service territory, not one street. Your own address can be better or worse.

Storm season and outages in Round Rock

NOAA’s Storm Events Database lists 369 storm reports for Williamson County from 2015 through 2026, most often hail (212), thunderstorm wind (68), flash flood (63), and tornado (16). The busiest full year was 2025 with 84 reports and the quietest was 2024 with 15, so the risk changes a lot from one year to the next.

Reports peak in May (115 since 2015), followed by April and March. October is outside those three months, so an outage now is less likely to be weather-related.

NOAA’s own narratives name power outages in 4 storm episodes in Williamson County since 2015, most often in August. That count is a floor, since the database records outages only when a spotter or agency mentions them.

What the most common storm types in Round Rock do to the grid:

• Hail. Hail rarely cuts power by itself, but it often arrives with the wind and lightning that do, and it breaks solar panels, windshields and exposed utility equipment.
• Thunderstorm wind. Straight-line wind pushes trees and limbs into distribution lines. These outages are usually local, a street or a neighborhood at a time, and crews clear them circuit by circuit.
• Tornado. A tornado destroys poles and lines along its path. Repairs there mean rebuilding rather than reconnecting, so restoration takes days instead of hours.

Storm reports that name Round Rock

Within Williamson County, 52 NOAA storm reports since 2015 name Round Rock as their location or in their description: hail (39), thunderstorm wind (8), tornado (2), and heavy rain (1). That is about 14% of the county’s reports. Reports naming Round Rock are most common in September. The busiest full year was 2023 with 25. These reports record 1 death in total.

Who a power outage hits hardest in Round Rock

50.2% of occupied homes in Round Rock are heated with piped natural gas, and 47.3% with electricity (US 41.3% electric). A gas furnace still needs electricity for its blower and ignition, so a long winter outage leaves these homes cold too, though a gas supply stays on when the grid fails. Never heat a home with an oven, grill or camp stove indoors.

Residents aged 65 or older are 11.2% of the population in Round Rock, below the US share of 17.2% and 12.1% report a disability (US 13.3%). These are the households most likely to depend on powered medical equipment such as oxygen concentrators, CPAP machines and refrigerated medicine. If someone in your home does, ask Oncor whether it keeps a priority or medical-needs list, and register before the next storm rather than during it.

About the housing: 2.9% of the housing in Round Rock was built before 1970 (US 35.5%), so most homes are newer and more of the local lines are likely to be buried or recently replaced; 16.3% of homes are in buildings with 20 or more units (US 10.3%), where an outage also stops elevators and water pumps, which matters for upper floors and anyone who cannot use stairs.

Median household income in Round Rock is $99,287, above the Texas figure of $78,476, and home generators and batteries are correspondingly more common. If a neighbor runs one, keep the exhaust away from every window and door, including yours.

Source: US Census Bureau, American Community Survey 2020–2024 (housing, heating fuel, age and disability tables).

If the power is out in Round Rock

About 128,812 people live in Round Rock, the 18th largest of the 20 Texas cities on this site. Report the outage to the utility so a ticket exists for your address, then check Oncor’s outage map for an estimate. If neighbors have power and you do not, report it again: the fault may be on the line to your house alone, which is a separate repair.

Round Rock power outage map

Oncor’s outage map has the official restoration estimate for your address; the count above comes from residents. Food and generator safety: power outage guide.

Round Rock power outage questions