Electricity rates in 78631 — Harper, TX
Homes in ZIP 78631 pay about 12.2¢ per kWh (Pedernales Electric Coop, Inc., 2024 average). The Texas average is 15.9¢ and the U.S. average 18.2¢ (Aug 2026).
In Kimble County, the poles and wires belong to AEP Texas North Company (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 12.2¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 78631 is
Outlined: ZIP code area · scroll or pinch to zoomUtilities serving 78631
| Utility | Home price | Avg. bill | Customers in TX |
|---|---|---|---|
| Pedernales Electric Coop, Inc. Cooperative | 12.2¢ 2024 | $146 | 405,587 |
| Central Texas Elec Coop, Inc. Cooperative | 11.0¢ 2024 | $118 | 39,569 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for Kimble 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 78631
How much does electricity cost in 78631?
About 12.2¢ per kWh for homes (Pedernales Electric Coop, Inc., 2024 average, EIA). At 900 kWh a month that is roughly $110.
Who is the electric utility for 78631?
Pedernales Electric Coop, Inc., with about 405,587 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.