Ennis, Texas electricity: Oncor wires and 11,809 competitive homes
Ennis sits on Oncor's wires. Below: ZIP by ZIP, who can shop, and what plans cost this month.
Last updated . Written by Power Hopper. Reviewed by Brent Ward, founder, on 2026-10-19. Data as of October 5, 2026 (meters) and October 19, 2026 (plan prices).
In short: ERCOT counts 11,809 active residential meters with an Ennis address, all on Oncor's wires (October 5, 2026). Nearly every Ennis address in our data is on Oncor's wires and can pick a retail provider.
Who delivers electricity in Ennis?
Outages: Oncor at oncor.com/outages.
Oncor delivery charges and area
Can every address in Ennis choose an electricity provider?
None of the ZIP codes holding Ennis's 11,809 competitive homes is flagged split, so most Ennis streets can shop.
3 more utilities (co-op, city-owned or non-ERCOT; EIA 2024) also serve parts of Ellis County; no retail choice there unless the utility opted in.
Moving to Ennis
Local numbers for setting up a home in Ennis, each checked on the official source. More contacts, and a printable list, are on Ennis helpful move-in information.
- City hall (ask about water service): City of Ennis: City Hall (main line), 972-875-1234.
- Natural gas: Atmos Energy: customer service, 888-286-6700.
- Public schools: Ennis ISD.
- Driver license: Texas DPS Driver License Office: Waxahachie, 512-424-2600.
You enter your address on the next screen, and we confirm there whether you can choose an electricity provider at that address.
Have a High Light Bill or Electric Bill?
If your electricity bill in Ennis came in higher than you expected, upload or enter it and see whether another plan could lower your electricity costs, or whether staying where you are makes more sense.
Weather and electricity in Ennis
Typical weather near Ennis, from the nearest NOAA station with a complete 1991-2020 record: Bardwell Dam, about 4 miles from the city center (station elevation 461 ft). These are normals for that station, not readings at your address. August is the warmest month on average, with a normal daily high of 95°F; January has the coolest average low, 36°F. Average daily highs reach 90°F or more in July to August. No month averages a daily low at or below freezing.
For electricity, the normals point to two seasons that can lift a household's usage: cooling-degree days (a measure of how far each day's mean temperature sits above 65°F) peak in August at 601 for the month, and heating-degree days (below 65°F) peak in January at 588. How much that matters to a bill depends on the home, its insulation, its heating fuel and the household, so use your own usage history, not a regional average, when you compare plans.
| Month | Avg high °F | Avg low °F | Precipitation (in) | Cooling degree-days | Heating degree-days |
|---|---|---|---|---|---|
| Jan | 56 | 36 | 2.9 | 2 | 588 |
| Feb | 61 | 40 | 3.0 | 6 | 421 |
| Mar | 68 | 46 | 3.5 | 23 | 271 |
| Apr | 75 | 54 | 3.7 | 82 | 95 |
| May | 82 | 63 | 4.4 | 255 | 13 |
| Jun | 90 | 72 | 3.6 | 473 | 0 |
| Jul | 94 | 74 | 1.9 | 592 | 0 |
| Aug | 95 | 74 | 2.8 | 601 | 0 |
| Sep | 89 | 67 | 3.4 | 391 | 5 |
| Oct | 79 | 55 | 4.7 | 135 | 78 |
| Nov | 67 | 45 | 3.1 | 22 | 288 |
| Dec | 59 | 38 | 3.4 | 3 | 520 |
Historical weather records for Ellis County
The Texas Railroad Commission's county table lists a record low of -13°F (2011) and a record high of 115°F (1909), and a regional estimate of 24 consecutive hours as a typical longest freezing or frozen-precipitation period for Ellis County. These are historical county extremes, not Ennis's monthly averages and not a forecast; the normals above describe ordinary months.
Reference only: the U.S. Energy Information Administration's 2020 Residential Energy Consumption Survey puts the average Texas household at about 13,440 kWh a year (about 1,120 kWh a month if spread evenly). That is a statewide average for 2020, not Ennis, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00410518; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in Ennis?
- Population: 20,133 (2020 base) to 25,694 (July 2025), +27.6%, per Census Vintage 2025 estimates. The largest one-year change was +1,634 people, from July 2021 to July 2022. (Census)
- Mailing addresses stretch past city limits here. 11,809 competitive residential meters use Ennis as their postal city, while the city itself has 7,982 Census households, a ratio of 1.48. The Census household count (ACS 2020-2024) also lags a city that grew 28% since 2020. (ERCOT, Census)
- Ennis-addressed homes make up 0.3% of the 3,564,530 residential meters on Oncor's competitive system. (ERCOT)
- Ennis is still adding homes: 36 new residential meters in its main ZIP codes during Oct. 7-18, 2026 (most in 75119: 36), plus 25 vacant-to-active switches. (ERCOT)
- 853 of the 13,046 home meters in Ennis's main ZIP codes (6.5%) were de-energized on October 5, 2026, typically a vacant unit awaiting its next account. (ERCOT)
- Nearly all Ennis-addressed competitive homes (11,809) are in one ZIP code, 75119, which it shares with Garrett (222 homes) and Alma (158 homes). ZIP-wide, ERCOT counts 12,193 competitive meters for 11,159 Census households, a 1.09 ratio. (ERCOT, Census)
- By competitive homes on its postal city, Ennis is number 6 of the 20 cities and towns touching Ellis County, just behind Midlothian (12,827). (ERCOT)
- 31.1% of households in 75119 rent (ACS 2020-2024), the most among Ennis's main ZIP codes, so a lot of Ennis electricity accounts open and close with each lease. (Census)
- In 75119, the ZIP holding most Ennis homes, the ACS 2020-2024 survey finds a median household income of $77,053, 31.1% renters and 40.7% of households with $250+ monthly electric bills. (Census)
- Ennis's land splits across 2 main ZIP codes, led by 75119 (89%) and 75165 (10%), per the Census 2020 ZCTA-to-place relationship file. (Census)
Ennis electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 25,694 |
| Population (2020 estimates base) | 20,133 |
| Occupied households (ACS 2020-2024) | 7,982 |
| Active residential meters with an Ennis address | 11,809 |
| Active business meters with an Ennis address | 2,379 |
| Residential meters per Census household | 1.48 |
| Delivery utilities (homes) | Oncor 11,809 |
| Counties | Ellis |
| ZIP codes touching Ennis | 2 |
| Split ZIP codes (flagged below) | 0 |
How we built these numbers. Download: Ennis ZIP table (CSV).
What do electricity plans cost in Ennis right now?
Same-day medians for Oncor’s area (Oncor: 170 listings), delivery included; not a quote.
| Delivery utility | 500 kWh | 1,000 kWh | 2,000 kWh | Delivery charge |
|---|---|---|---|---|
| Oncor | 14.1¢ | 13.4¢ | 13.2¢ | 6.8673¢/kWh + $4.06/mo (effective October 4, 2026; tariff) |
Ennis ZIP codes: how much of each is on the competitive market?
Not every address in these ZIP codes has retail choice; check your exact address.
| ZIP | Ennis homes | Land in Ennis | Postal cities | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|---|
| 75165 | 0 | 3% | Waxahachie 99% | 23,081 | 18,741 | 1.23 | Near-full coverage. 27 new residential meters Oct 7-18, 2026. Mostly outside Ennis city limits. |
| 75119 | 11,809 | 11% | Ennis 97%, Garrett 2%, Alma 1% | 12,193 | 11,159 | 1.09 | Near-full coverage. 36 new residential meters Oct 7-18, 2026. |
Split ZIP codes for Ennis: none flagged.
Homes, renters and electric bills in Ennis’s ZIP codes
$250+ monthly electric bills peak in 75119 (40.7% of households); post-2020 homes in 75119 (5.6%).
| ZIP | Ennis homes | Median income | Renters | 5+ units | $250+ bills | Built 2020+ | New meters | Vacant to active |
|---|---|---|---|---|---|---|---|---|
| 75119 | 11,809 | $77,053 | 31.1% | 6.0% | 40.7% | 5.6% | 36 | 25 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
How do towns near Ennis compare?
| Town (2,000+ people) | Miles | Competitive homes | Per household | Utility | Status |
|---|---|---|---|---|---|
| Palmer | 7 mi | 1,302 | 1.66 | Oncor | Most addresses can choose |
| Waxahachie | 13 mi | 24,906 | 1.56 | Oncor | Most addresses can choose |
| Ferris | 15 mi | 3,460 | 3.55 | Oncor | Most addresses can choose |
| Red Oak | 15 mi | 9,507 | 1.78 | Oncor | Most addresses can choose |
| Italy | 18 mi | 1,233 | 1.72 | Oncor | Most addresses can choose |
| Wilmer | 19 mi | 3,165 | 1.74 | Oncor | Most addresses can choose |
Business electricity in Ennis
Ennis business meters: 2,379 (5.0 homes per business meter); large non-residential meters in Ennis’s main ZIP codes: 12 (ERCOT, October 5, 2026).
We compare retail providers and direct suppliers and can bid out high-consumption accounts, but we can’t promise savings or how many suppliers will bid. Businesses in Texas retail-choice areas can request a rate review online.
How do I compare electricity plans in Ennis?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Ennis
Is Ennis deregulated for electricity?
Yes, where Oncor's wires reach the house, which in Ennis is most of the city: 11,809 homes with an Ennis mailing address were on the competitive market on October 5, 2026, 1.48 for each Census household. None of Ennis's ZIP codes is flagged split, though an address check is still the only sure answer.
What is the biggest Ennis ZIP code for electricity customers?
ZIP 75119: 11,809 of its 12,193 competitive residential meters use an Ennis address, and the ZIP has about 11,159 Census households (ratio 1.09).
Can businesses in Ennis choose an electricity provider?
Yes, where Oncor delivers: 2,379 Ennis-addressed business meters are on the competitive market in ERCOT's data, and large accounts can also buy from commercial suppliers directly.
I'm moving to Ennis. How do I set up electricity?
10.0% of 75119 residents moved within a year (ACS), and 25 75119 meters turned from vacant to active Oct. 7-18, 2026. Check that your Ennis address is on Oncor's wires, then choose a plan and start date.
Why are there more electric meters than households in Ennis?
11,809 Ennis-addressed meters against 7,982 city households is 1.48 per household: the Ennis postal area extends past city limits, and new homes get meters before the Census counts them. It doesn't mean every nearby address can choose.
Who restores power in Ennis after an outage?
Oncor, at oncor.com/outages: it carries power to all 11,809 Ennis-addressed competitive homes, whatever retail provider bills them.
Where to next?
Up: Oncor area · Ellis County
Nearest town pages: Waxahachie · Red Oak · Corsicana · Glenn Heights · Lancaster · Midlothian · DeSoto · Seagoville
Compare plans · Moving · High bill · Texas rates · Areas without retail choice · Methodology
Sources
- ERCOT TDSP ESIID Extract (report 203): full extract as of Oct 5, 2026; daily files Oct 7-18, 2026
- Census ACS 2020-2024 5-year estimates (B25003 households, B01003 population)
- Census Vintage 2025 city and town population estimates
- Census 2020 ZCTA-to-place and ZCTA-to-county relationship files
- EIA-861 (2024) utility service territories by county
- PUCT Power to Choose residential offer export, Oct 19, 2026, 7:59 AM CT
- PUCT: Choosing an Electric Plan
- PUCT broker directory (BR260201)
- Oncor Electric Delivery
- Oncor delivery tariff (effective October 4, 2026)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.