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Southwestern Public Service Co: what its customers actually pay

Data as of: EIA-861 annual 2024 (released 2025) · EIA monthly state prices February 2026 · EIA weekly heating-fuel survey Mar 30, 2026 · retail-choice registry reviewed Jun 2026 · URDB tariffs pulled Jun 2026. Page generated 2026-06-12.

Southwestern Public Service Co residential customers paid an average of 13.35¢/kWh in 202411% below the Texas average of 14.96¢/kWh (EIA-861). It served 222,146 residential customers across 45 TX counties. Territories are fixed by address, but the cheapest nearby utility, Deaf Smith Electric Coop (8.83¢), works out about $488/yr less at 10,800 kWh/yr.

How Southwestern Public Service compares with the utilities next door

Utilities filing EIA-861 service territory in at least one county that Southwestern Public Service also serves — average residential ¢/kWh (EIA-861 2024) and annual cost difference vs Southwestern Public Service at 10,800 kWh/yr
Utility2024 ¢/kWhCustomersΔ vs Southwestern Public Service, ¢/kWh$/yr difference
Deaf Smith Electric Coop, Inc 8.83 5,333 -4.52 -$488
Lyntegar Electric Coop, Inc 8.99 9,021 -4.36 -$471
South Plains Electric Coop Inc 10.35 56,173 -3.00 -$324
Southwestern Electric Power Co 12.03 156,271 -1.33 -$143
Tri-County Electric Coop, Inc 12.65 118,075 -0.70 -$76
Southwestern Public Service Co (this page) 13.35 222,146
Big Country Electric Coop, Inc 13.72 9,449 +0.37 +$40

6 bundled utilities (≥5,000 customers) share at least one county with Southwestern Public Service. Positive $/yr = that utility's customers pay more than Southwestern Public Service customers at the same usage. Territories are fixed by address — these gaps measure cost differences between areas, while the supply portion is separately shoppable in Texas (see below).

Where Southwestern Public Service customers pay more (county benchmark)

Counties served by Southwestern Public Service Co: cheapest bundled utility operating in the same county and the annual difference at 10,800 kWh/yr (EIA-861 2024)
CountyCheapest utility in countyTheir ¢/kWhSouthwestern Public Service premium, $/yr
CarsonRita Blanca Electric Coop, Inc8.28 +$547
DallamRita Blanca Electric Coop, Inc8.28 +$547
EctorRita Blanca Electric Coop, Inc8.28 +$547
HansfordRita Blanca Electric Coop, Inc8.28 +$547
HartleyRita Blanca Electric Coop, Inc8.28 +$547
HutchinsonRita Blanca Electric Coop, Inc8.28 +$547
MidlandRita Blanca Electric Coop, Inc8.28 +$547
MooreRita Blanca Electric Coop, Inc8.28 +$547

Multiple utilities in one county means adjoining territories, not household choice — you cannot switch wires companies. In Texas you can shop the supply portion regardless of county. Showing the 8 highest-premium counties of 45 served.

Rate trend and size

Southwestern Public Service Co residential average price and customers, EIA-861 2023 vs 2024
Metric20232024Change
Average price, ¢/kWh14.7313.35-9.4%
Residential customers220,640222,146+0.7%

Ownership: Investor Owned. Statewide context: Texas electricity rates.

Supply vs delivery on a Southwestern Public Service bill

Texas has residential electric supply choice: Southwestern Public Service delivers the power and bills a default supply rate, but you may buy the supply portion from a licensed competitor instead. Compare offers against the price to compare on the state's official shopping site: powertochoose.org.

Electric choice in ERCOT competitive TDU areas (~85% of load; munis/co-ops exempt; Power to Choose lists offers). No residential gas choice.

Counties served (TX, EIA-861 2024)

Andrews · Armstrong · Bailey · Borden · Briscoe · Carson · Castro · Cochran · Cottle · Crosby · Dallam · Dawson · Deaf Smith · Donley · Ector · Floyd · Foard · Gaines · Garza · Gray · Hale · Hansford · Hartley · Hemphill · Hockley · Hutchinson · Lamb · Lipscomb · Lubbock · Lynn · Midland · Moore · Motley · Ochiltree · Oldham · Parmer · Potter · Randall · Roberts · Sherman · Swisher · Terry · Wheeler · Wilbarger · Yoakum

Head-to-head comparisons

Questions people ask

Is Southwestern Public Service Co more expensive than other Texas utilities?
Southwestern Public Service Co customers paid an average 13.35 cents/kWh in 2024 — 11% below the Texas volume-weighted average of 14.96 cents (EIA-861, bundled residential service).
Can I switch away from Southwestern Public Service Co?
You cannot switch the wires company — distribution territory is fixed by address. Texas does allow supply choice, so you can buy the supply portion of the bill from a licensed competitor via powertochoose.org if its offer beats the price to compare.
How many customers does Southwestern Public Service Co have?
222,146 residential customers in Texas in 2024 across 45 counties, per its EIA-861 federal filing. Ownership type: investor-owned.
About these numbers. Rates shown are averages computed from federal regulatory filings (EIA Form 861) and public tariff databases — confirm with your utility before making decisions; your actual rate depends on your tariff, usage, and riders. Distribution utility is determined by address and generally cannot be chosen; in retail-choice states you may choose your supplier for the supply portion of the bill. Savings figures use 10,800 kWh/yr (US average residential usage) and are estimates, not quotes. EnergySavings is an independent data project by CertiHomes and is not affiliated with any utility, supplier, or government agency.