League City, Texas electricity: TNMP wires, 4 split ZIP codes to check
League City's 40,501 competitive homes sit on TNMP's wires; here is where choice stops, what delivery costs and how plan prices look 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: League City homes in ERCOT's competitive data are on TNMP's wires (38,392) and CenterPoint's wires (2,109). Most League City addresses can choose a retail provider, but 4 of the ZIP codes below are split, so check your exact address.
Who delivers electricity in League City?
Outages: TNMP at tnmp.com.
TNMP delivery charges and area · CenterPoint delivery charges and area
Can every address in League City choose an electricity provider?
Of the 40,501 League City-addressed competitive homes we can place by ZIP code, 40,501 (100%) are in the split ZIP codes 77573, 77539, 77546, 77511; on those streets, a neighbor may be on a different utility. The ZIP table below marks each one.
EIA’s 2024 data lists 2 other utilities (co-ops, city-owned or outside ERCOT) in the counties around League City; they are named on Galveston County · Harris County. Their customers can’t choose unless the utility opted in.
Moving to League City
Local numbers for setting up a home in League City, each checked on the official source. More contacts, and a printable list, are on League City helpful move-in information.
- City hall (ask about water service): City of League City: City Hall (main line), 281-554-1000.
- Trash pickup: Trash and recycling service (number on the city trash page), 281-554-1100.
- Natural gas: CenterPoint Energy: gas customer service (Houston area), 713-659-2111.
- Public schools: Clear Creek ISD, Dickinson ISD, Santa Fe ISD.
- Driver license: Texas DPS Driver License Office: League City, 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 League City 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 League City
Typical weather near League City, from the nearest NOAA station with a complete 1991-2020 record: Houston Nwso, about 2 miles from the city center (station elevation 19 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 92°F; January has the coolest average low, 46°F. Average daily highs reach 90°F or more in June 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 592 for the month, and heating-degree days (below 65°F) peak in January at 337. 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 | 64 | 46 | 4.8 | 20 | 337 |
| Feb | 67 | 50 | 3.0 | 34 | 213 |
| Mar | 73 | 56 | 3.3 | 87 | 109 |
| Apr | 78 | 61 | 4.2 | 174 | 28 |
| May | 85 | 69 | 5.1 | 375 | 1 |
| Jun | 90 | 75 | 6.5 | 520 | 0 |
| Jul | 92 | 76 | 4.4 | 586 | 0 |
| Aug | 92 | 76 | 6.6 | 592 | 0 |
| Sep | 88 | 72 | 7.3 | 453 | 0 |
| Oct | 82 | 63 | 5.8 | 244 | 22 |
| Nov | 73 | 53 | 4.5 | 81 | 142 |
| Dec | 66 | 47 | 4.5 | 34 | 294 |
Historical weather records for Galveston and Harris counties
League City lies in Galveston and Harris counties. The Texas Railroad Commission's county table lists, for each county:
- Galveston County: a record low of 7°F (1899) and a record high of 106°F (2000), and a regional estimate of 18 consecutive hours as a typical longest freezing or frozen-precipitation period.
- Harris County: a record low of 5°F (1940) and a record high of 111°F (2000), and a regional estimate of 18 consecutive hours as a typical longest freezing or frozen-precipitation period.
These are historical county extremes, not League City'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 League City, and not an estimate for your home. EIA source.
Sources: NOAA NCEI U.S. Climate Normals 1991-2020, station USC00414333; Texas Railroad Commission, Historical Weather Data by County (2022).
What is different about electricity in League City?
- Census estimates put League City at 119,905 residents on July 1, 2025, up 4.9% from a 2020 estimates base of 114,332. Source: Census Bureau.
- ERCOT's daily files added 43 new residential meters in League City's main ZIP codes between Oct. 7 and Oct. 18, 2026, 43 of them in 77573. Source: ERCOT daily.
- League City-addressed business meters number 3,730 in ERCOT's Oct. 5 extract, one for every 10.9 homes. Source: ERCOT TDSP.
- 100% of League City-addressed competitive homes (40,457 of 40,501) are in ZIP 77573, where competitive meters run 1.12 per Census household. Source: ERCOT TDSP; Census ACS.
- Among the 11 cities and towns that touch Galveston County, League City ranks 1 by competitive homes on its postal city in ERCOT's data, ahead of Galveston (36,198). Source: ERCOT TDSP.
League City electricity by the numbers
| Measure | Value |
|---|---|
| Population (July 1, 2025 estimate) | 119,905 |
| Population (2020 estimates base) | 114,332 |
| Occupied households (ACS 2020-2024) | 42,950 |
| Active residential meters with a League City address | 40,501 |
| Active business meters with a League City address | 3,730 |
| Residential meters per Census household | 0.94 |
| Delivery utilities (homes) | TNMP 38,392; CenterPoint 2,109 |
| Counties | Galveston, Harris |
| ZIP codes touching League City | 6 |
| Split ZIP codes (flagged below) | 4 |
How we built these numbers. Download: League City ZIP table (CSV).
What do electricity plans cost in League City right now?
Same-day medians for TNMP’s area (TNMP: 166; CenterPoint: 173 listings), delivery included; not a quote.
League City 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 | Main postal cities (homes) | ZIP land inside League City | Competitive homes (ERCOT) | Households (Census) | Ratio | What it means |
|---|---|---|---|---|---|---|
| 77573 | League City 100% | 100% | 40,463 | 35,988 | 1.12 | Split. Near-full coverage. Two delivery utilities: TNMP 38,354, CenterPoint 2,109 homes. 43 new residential meters Oct 7-18, 2026. |
| 77511 | Alvin 100% | 6% | 21,973 | 17,866 | 1.23 | Split. Near-full coverage. Two delivery utilities: TNMP 15,762, CenterPoint 6,211 homes. 10 new residential meters Oct 7-18, 2026. Mostly outside League City city limits. |
| 77546 | Friendswood 100% | 8% | 20,523 | 19,508 | 1.05 | Split. Near-full coverage. Two delivery utilities: TNMP 11,087, CenterPoint 9,436 homes. Mostly outside League City city limits. |
| 77539 | Dickinson 95%, Texas City 5% | 15% | 17,623 | 17,813 | 0.99 | Split. Near-full coverage. Two delivery utilities: TNMP 12,540, CenterPoint 5,083 homes. 81 new residential meters Oct 7-18, 2026. |
| 77598 | Webster 100% | 14% | 12,765 | 12,494 | 1.02 | Near-full coverage. |
| 77565 | Kemah 100% | 26% | 4,577 | 3,196 | 1.43 | Near-full coverage. 230 new residential meters Oct 7-18, 2026. |
Split ZIP codes for League City: 77573, 77539, 77546, 77511.
Homes, renters and electric bills in League City’s ZIP codes
Among League City’s main ZIP codes, 77573 has the largest share of households paying $250 or more a month for electricity (37.2%).
| ZIP | Renter households | Moved in the past year | Electric bill $250+/month | Built 2020 or later | New meters Oct 7-18, 2026 |
|---|---|---|---|---|---|
| 77573 | 24.2% | 10.2% | 37.2% | 2.0% | 43 |
How do towns near League City compare?
Within about 28 miles; whole-place estimates.
| Town | Population | Distance | Delivery utility | Status | Competitive homes (postal city) |
|---|---|---|---|---|---|
| Webster | 12,507 | 3 mi | CenterPoint | Most addresses can choose | 12,856 |
| Nassau Bay | 5,210 | 4 mi | CenterPoint | Most addresses can choose | 0 |
| Dickinson | 21,908 | 4 mi | TNMP | Most addresses can choose | 16,662 |
| Friendswood | 41,319 | 6 mi | TNMP | Most addresses can choose | 20,428 |
| Kemah | 3,097 | 6 mi | CenterPoint | Most addresses can choose | 4,577 |
| Taylor Lake Village | 3,774 | 7 mi | CenterPoint | Most addresses can choose | 0 |
Business electricity in League City
ERCOT lists 3,730 active business meters with a League City address, about one for every 10.9 homes, and 14 meters in ERCOT’s large non-residential class across League City’s main ZIP codes.
Power Hopper compares offers from retail electric providers and direct suppliers for businesses. For high-consumption businesses, we can run a competitive bid so more than one supplier prices the same usage. 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 League City?
ZIP first, then your address; read each plan’s Electricity Facts Label before choosing.
Common questions about electricity in League City
Is League City deregulated for electricity?
For most addresses, yes: 40,501 homes with a League City mailing address are on the competitive market in ERCOT's October 5, 2026 data, against 42,950 Census households in the city. 4 of the ZIP codes touching League City are split (77573, 77539, 77546, 77511), so check your exact address.
Which League City ZIP code has the most homes on the competitive market?
77573. ERCOT lists 40,463 competitive residential meters there, 40,457 with a League City address, against about 35,988 Census households in the ZIP (ratio 1.12).
How many businesses in League City are on the competitive electricity market?
Yes, on TNMP's wires. ERCOT lists 3,730 active business meters with a League City address, one for every 10.9 homes. Larger accounts can also buy from suppliers that sell directly to commercial customers; Power Hopper can run a competitive bid for high-consumption businesses, though we can't promise savings or how many suppliers will bid.
Why does my League City home have an Alvin address?
ZIP 77511 is shared. In ERCOT's data, 100% of its 21,973 competitive residential meters use Alvin as the postal city and almost none use League City. Mailing city and city limits are different things; the service address decides which utility serves you.
Who do I call in League City when the power goes out?
Your delivery utility, which in League City depends on the street: ERCOT shows League City homes on TNMP (38,392) and CenterPoint (2,109). Your retail provider cannot restore power.
Where to next?
Up: TNMP area · CenterPoint area · Galveston County · Harris County
Nearest town pages: Pasadena · Texas City · Pearland · Baytown · Galveston · Missouri City · Sugar Land · Victoria
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)
- Texas-New Mexico Power (TNMP)
- CenterPoint Energy Houston Electric
- TNMP delivery tariff (effective September 13, 2026)
- CenterPoint delivery tariff (effective October 1, 2026)
BJW Ventures LLC d/b/a Power Hopper | PUCT BR260201. PUCT registration is not an endorsement.