Cedar Hill, Texas electricity: Oncor wires and 18,109 competitive homes
18,109 Cedar Hill-addressed homes buy power on Oncor's system. Here is where choice stops, what delivery costs and where plan prices sit today.
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 18,109 active residential meters with a Cedar Hill address, all on Oncor's wires (October 5, 2026). Nearly every Cedar Hill address in our data is on Oncor's wires and can pick a retail provider.
Who delivers electricity in Cedar Hill?
Outages: Oncor at oncor.com/outages.
Oncor delivery charges and area
Can every address in Cedar Hill choose an electricity provider?
None of the ZIP codes holding Cedar Hill's 18,094 competitive homes is flagged split, so most Cedar Hill streets can shop.
5 more utilities (co-op, city-owned or non-ERCOT; EIA 2024) also serve parts of Dallas County · Ellis County; no retail choice there unless the utility opted in.
Moving to Cedar Hill
Local numbers for setting up a home in Cedar Hill, each checked on the official source. More contacts, and a printable list, are on Cedar Hill helpful move-in information.
- City hall (ask about water service): City of Cedar Hill: City Hall (main line), 972-291-5100.
- Natural gas: Atmos Energy: customer service, 888-286-6700.
- Public schools: Cedar Hill ISD, Midlothian ISD.
- Driver license: Texas DPS Driver License Office: Dallas-South Mega Center, 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 Cedar Hill 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 Cedar Hill
Typical weather near Cedar Hill, from the nearest NOAA station with a complete 1991-2020 record: Joe Pool Lake, about 4 miles from the city center (station elevation 591 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 97°F; January has the coolest average low, 33°F. Average daily highs reach 90°F or more in June to September. 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 609 for the month, and heating-degree days (below 65°F) peak in January at 607. 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 | 58 | 33 | 2.7 | 1 | 607 |
| Feb | 62 | 38 | 3.0 | 7 | 435 |
| Mar | 69 | 45 | 3.8 | 28 | 273 |
| Apr | 77 | 53 | 3.7 | 88 | 94 |
| May | 84 | 61 | 4.7 | 242 | 14 |
| Jun | 92 | 69 | 4.2 | 452 | 0 |
| Jul | 96 | 73 | 2.3 | 592 | 0 |
| Aug | 97 | 73 | 2.4 | 609 | 0 |
| Sep | 90 | 66 | 3.1 | 404 | 5 |
| Oct | 80 | 54 | 5.0 | 139 | 79 |
| Nov | 68 | 45 | 3.2 | 25 | 292 |
| Dec | 60 | 35 | 3.0 | 3 | 542 |
Historical weather records for Dallas County
The Texas Railroad Commission's county table lists a record low of -10°F (1899) and a record high of 115°F (1909), and a regional estimate of 30 consecutive hours as a typical longest freezing or frozen-precipitation period for Dallas County. These are historical county extremes, not Cedar Hill'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 Cedar Hill, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00414597; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in Cedar Hill?
- The Census Bureau's July 1, 2025 estimate for Cedar Hill is 49,801 people, up 1.3% on the 2020 estimates base of 49,158. The largest one-year change was +745 people, from July 2023 to July 2024. (Census)
- Oncor share: 0.5% of its 3,564,530 competitive residential meters carry a Cedar Hill address. (ERCOT)
- From Oct. 7 to Oct. 18, 2026, 13 residential meters in Cedar Hill's main ZIP codes went from vacant to active in ERCOT's daily files, which usually means a move-in. (ERCOT)
- Cedar Hill's main ZIP codes: 18,285 active and 598 de-energized residential meters (3.2% de-energized, usually empty or between tenants). (ERCOT)
- Nearly all Cedar Hill-addressed competitive homes (18,094) are in one ZIP code, 75104, which it shares with Grand Prairie (190 homes). ZIP-wide, ERCOT counts 18,285 competitive meters for 16,762 Census households, a 1.09 ratio. (ERCOT, Census)
- By competitive homes on its postal city, Cedar Hill is number 13 of the 30 cities and towns touching Dallas County, just behind Garland (18,558). (ERCOT)
- In 75104, the ZIP holding most Cedar Hill homes, the ACS 2020-2024 survey finds a median household income of $102,875, 28.0% renters and 48.0% of households with $250+ monthly electric bills. (Census)
- Of Cedar Hill's six nearest towns, Grand Prairie has the most competitive homes (75,166, 7 mi away) and Glenn Heights the fewest per household (0.59). (ERCOT, Census)
Cedar Hill electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 49,801 |
| Population (2020 estimates base) | 49,158 |
| Occupied households (ACS 2020-2024) | 16,643 |
| Active residential meters with a Cedar Hill address | 18,109 |
| Active business meters with a Cedar Hill address | 2,242 |
| Residential meters per Census household | 1.09 |
| Delivery utilities (homes) | Oncor 18,109 |
| Counties | Dallas, Ellis |
| ZIP codes touching Cedar Hill | 2 |
| Split ZIP codes (flagged below) | 0 |
How we built these numbers. Download: Cedar Hill ZIP table (CSV).
What do electricity plans cost in Cedar Hill 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) |
Cedar Hill 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 | Cedar Hill homes | Land in Cedar Hill | Postal cities | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|---|
| 75104 | 18,094 | 93% | Cedar Hill 99%, Grand Prairie 1% | 18,285 | 16,762 | 1.09 | Near-full coverage. |
| 76065 | 0 | 1% | Midlothian 94%, Grand Prairie 5% | 13,598 | 15,604 | 0.87 | Near-full coverage. 28 new residential meters Oct 7-18, 2026. Mostly outside Cedar Hill city limits. |
Split ZIP codes for Cedar Hill: none flagged.
Homes, renters and electric bills in Cedar Hill’s ZIP codes
$250+ monthly electric bills peak in 75104 (48.0% of households).
| ZIP | Cedar Hill homes | Median income | Renters | 5+ units | $250+ bills | Built 2020+ | New meters | Vacant to active |
|---|---|---|---|---|---|---|---|---|
| 75104 | 18,094 | $102,875 | 28.0% | 9.1% | 48.0% | 3.1% | 3 | 13 |
ACS 2020-2024 by ZCTA; meters: ERCOT daily files, Oct 7-18, 2026.
How do towns near Cedar Hill compare?
| Town (2,000+ people) | Miles | Competitive homes | Per household | Utility | Status |
|---|---|---|---|---|---|
| Duncanville | 5 mi | 13,768 | 1.04 | Oncor | Most addresses can choose |
| Ovilla | 5 mi | 1,905 | 1.31 | Oncor | Most addresses can choose |
| DeSoto | 6 mi | 21,968 | 1.06 | Oncor | Most addresses can choose |
| Glenn Heights | 6 mi | 3,535 | 0.59 | Oncor | Partly |
| Grand Prairie | 7 mi | 75,166 | 1.10 | Oncor | Most addresses can choose |
| Midlothian | 8 mi | 12,827 | 0.98 | Oncor | Most addresses can choose |
Business electricity in Cedar Hill
Cedar Hill business meters: 2,242 (8.1 homes per business meter); large non-residential meters in Cedar Hill’s main ZIP codes: 3 (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 Cedar Hill?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in Cedar Hill
Can Cedar Hill residents pick their own electric company?
Most Cedar Hill homes can. ERCOT's October 5, 2026 extract has 18,109 Cedar Hill-addressed homes on Oncor's competitive system, compared with 16,643 households in the Census survey. None of Cedar Hill's ZIP codes is flagged split, though an address check is still the only sure answer.
What is the biggest Cedar Hill ZIP code for electricity customers?
ZIP 75104: 18,094 of its 18,285 competitive residential meters use a Cedar Hill address, and the ZIP has about 16,762 Census households (ratio 1.09).
Can businesses in Cedar Hill choose an electricity provider?
Yes, where Oncor delivers: 2,242 Cedar Hill-addressed business meters are on the competitive market in ERCOT's data, and large accounts can also buy from commercial suppliers directly.
How do I start electric service at a new Cedar Hill address?
Confirm the address is on Oncor's wires, then pick a plan and a start date. In 75104, 13.5% of residents moved in the past year (ACS); 13 75104 meters went vacant-to-active Oct. 7-18, 2026.
Where do I report a Cedar Hill power outage?
Call Oncor (oncor.com/outages), the wires utility for Cedar Hill's 18,109 competitive homes; a retail provider can't fix lines.
Where to next?
Up: Oncor area · Dallas County · Ellis County
Nearest town pages: Duncanville · DeSoto · Glenn Heights · Grand Prairie · Midlothian · Mansfield · Lancaster · Red Oak
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.