Electricity rates in 77458 — Midfield, TX
Homes in ZIP 77458 pay about 13.4¢ per kWh (Wharton County Elec Coop, Inc., 2024 average). The Texas average is 15.9¢ and the U.S. average 18.2¢ (Aug 2026).
In Matagorda County, the poles and wires belong to AEP Texas Central Company or CenterPoint Energy or Texas-New Mexico Power Co. (delivery only — it does not sell electricity). Retail electric providers averaged 16.7¢ per kWh for Texas homes in 2024 (EIA-861).
What a month of electricity costs
Monthly cost at the average price of 13.4¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 77458 is
Outlined: ZIP code area · scroll or pinch to zoomUtilities serving 77458
| Utility | Home price | Avg. bill | Customers in TX |
|---|---|---|---|
| Wharton County Elec Coop, Inc. Cooperative | 13.4¢ 2024 | $149 | 5,548 |
| Jackson Electric Coop, Inc. (TX) Cooperative · serves Matagorda County | 13.4¢ 2024 | $122 | 15,620 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for Matagorda County; county matches may serve only part of the area. Prices are each utility’s average residential revenue per kWh.
Texas price trend
Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the West South Central region, which includes Arkansas, Louisiana, Oklahoma, Texas.
Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.
Questions about 77458
How much does electricity cost in 77458?
About 13.4¢ per kWh for homes (Wharton County Elec Coop, Inc., 2024 average, EIA). At 900 kWh a month that is roughly $120.
Who is the electric utility for 77458?
Wharton County Elec Coop, Inc., with about 5,548 residential customers in Texas; 1 other utility also serves parts of the area.
Is electricity in TX getting more expensive?
The Texas residential average was 15.9¢ per kWh in August 2026, up 3.3% from a year earlier; the U.S. average was 18.2¢.
Can I choose my electricity supplier in TX?
In the competitive ERCOT area of Texas, yes: compare retail electric provider plans at PowerToChoose.org, the official site of the Public Utility Commission of Texas.