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Green Mountain Energy Company: 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.

Green Mountain Energy Company residential customers paid an average of 17.52¢/kWh in 202417% above the Texas average of 14.96¢/kWh (EIA-861). It served 292,172 residential customers. As a competitive retail provider, Green Mountain Energy can be switched away from at contract end. The cheapest large utility in the state, Pedernales Electric Coop (12.22¢), worked out about $573/yr less at 10,800 kWh/yr.

How Green Mountain Energy compares with Texas's largest utilities

Largest bundled utilities in Texas — average residential ¢/kWh (EIA-861 2024) and annual cost difference vs Green Mountain Energy at 10,800 kWh/yr
Utility2024 ¢/kWhCustomersΔ vs Green Mountain Energy, ¢/kWh$/yr difference
Pedernales Electric Coop, Inc 12.22 405,587 -5.30 -$573
City of San Antonio 12.43 865,914 -5.09 -$549
Austin Energy 12.58 507,291 -4.94 -$534
Entergy Texas Inc. 13.66 457,369 -3.86 -$416
US Retailers, LLC 14.61 412,301 -2.91 -$315
Just Energy 15.15 407,723 -2.37 -$256
Reliant Energy Retail Services 17.38 1,548,250 -0.14 -$15
Green Mountain Energy Company (this page) 17.52 292,172
TXU Energy Retail Co, LLC 18.70 1,446,391 +1.18 +$128

Green Mountain Energy files no county-level territory with EIA, so this table benchmarks against the state's largest utilities. Positive $/yr = that utility's customers pay more than Green Mountain Energy customers at the same usage. Green Mountain Energy is a competitive supplier, not a wires company — customers in choice areas can switch among providers, so these gaps are directly shoppable; municipal and co-op utilities in the table serve fixed territories (see below).

Rate trend and size

Green Mountain Energy Company residential average price and customers, EIA-861 2023 vs 2024
Metric20232024Change
Average price, ¢/kWh16.4517.52+6.5%
Residential customers304,709292,172-4.1%

Ownership: Retail Power Marketer. Statewide context: Texas electricity rates.

Supply vs delivery on a Green Mountain Energy bill

Texas has residential electric supply choice: Green Mountain Energy is itself a competitive supplier. 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.

Service area

Green Mountain Energy Company files no county-level service territory with EIA — typical for competitive retail providers, which sell supply across the delivery territories of the local wires companies.

Questions people ask

Is Green Mountain Energy Company more expensive than other Texas utilities?
Green Mountain Energy Company customers paid an average 17.52 cents/kWh in 2024 — 17% above the Texas volume-weighted average of 14.96 cents (EIA-861, bundled residential service).
Can I switch away from Green Mountain Energy Company?
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 Green Mountain Energy Company have?
292,172 residential customers in Texas in 2024, per its EIA-861 federal filing. Ownership type: retail supplier.
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.