Texas is internationally famous for its deregulated electricity market, where roughly 85% of residents have the legal freedom to shop for electricity, choose their retail provider, and lock in competitive fixed rates.
However, tens of thousands of newcomers relocating to the booming Central Texas corridor—primarily Austin and San Antonio—are shocked to discover that they cannot choose their electric provider at all.
When you sign a lease on an apartment in downtown Austin or purchase a home in San Antonio proper, you are assigned a single utility company with zero retail choice.
Yet drive just ten minutes down the highway into neighboring suburbs like Round Rock, Pflugerville, Buda, Kyle, or Cibolo, and the rules flip: you suddenly have access to hundreds of competitive retail electricity plans.
This guide explains why Austin and San Antonio were exempted from retail competition, provides a clear breakdown of which Central Texas communities have choice, and outlines how to find the best rates if you reside in a deregulated suburb.
In the city limits of Austin and San Antonio, you cannot choose your electric company because both cities operate municipal utility monopolies: Austin Energy serves Austin, and CPS Energy serves San Antonio. However, many surrounding Central Texas suburbs—including Round Rock, Pflugerville, Buda, Kyle, San Marcos, New Braunfels, Cibolo, and Schertz—are part of the Texas deregulated market (served by Oncor, CenterPoint, or AEP Texas), where homeowners have 100% legal freedom to choose their retail electric provider.
Why Isn't Electricity Deregulated in Austin and San Antonio?
To understand why Austin and San Antonio lack retail electricity choice, you have to look back to Senate Bill 7 (SB 7), the landmark legislation passed by the Texas Legislature in 1999 that restructured the Electric Reliability Council of Texas (ERCOT) grid.
While SB 7 mandated competition for investor-owned utilities (such as TXU, which became Oncor, and Houston Lighting & Power, which became CenterPoint), it created a special statutory exemption for two types of power providers:
- Municipal Utilities (Munis): Electric utilities owned and operated by a city government.
- Electric Cooperatives (Co-ops): Member-owned, non-profit electric utilities primarily serving rural corridors.
Under Texas law, municipal utilities and co-ops were granted the authority to "opt in" to retail competition if their governing boards voted to do so.
Both the Austin City Council (which oversees Austin Energy) and the CPS Energy Board of Trustees / San Antonio City Council chose not to open their territories to competition. The primary reason is financial: municipal utility revenues generate hundreds of millions of dollars in annual transfers to city general funds, directly financing municipal services, public parks, police departments, and street maintenance.
Central Texas Municipality Guide: Who Has Choice vs. Who Has a Monopoly?
Because municipal and cooperative boundaries rarely follow clean county lines, Central Texas is a patchwork of competitive and non-competitive pockets.
| City / Suburb | Utility Provider | Market Status | Can You Choose Your Provider? |
|---|---|---|---|
| Austin (City Limits) | Austin Energy | Municipal Monopoly | No (Mandatory City Utility) |
| San Antonio (City Limits) | CPS Energy | Municipal Monopoly | No (Mandatory City Utility) |
| Round Rock | Oncor Electric Delivery | Deregulated Competitive Market | Yes (100% Retail Choice) |
| Pflugerville | Oncor Electric Delivery | Deregulated Competitive Market | Yes (100% Retail Choice) |
| Hutto & Taylor | Oncor Electric Delivery | Deregulated Competitive Market | Yes (100% Retail Choice) |
| Buda & Kyle | Pedernales Electric (PEC) or Oncor | Split Jurisdiction | Varies by Street Address |
| San Marcos | San Marcos Electric Utility (Muni) vs. Oncor | Split Jurisdiction | Varies by Subdivision |
| New Braunfels | New Braunfels Utilities (NBU) vs. CenterPoint | Split Jurisdiction | Varies by Subdivision |
| Cibolo & Schertz | CPS Energy vs. CenterPoint / AEP | Split Jurisdiction | Varies by Subdivision |
| Killeen & Temple | Oncor Electric Delivery | Deregulated Competitive Market | Yes (100% Retail Choice) |
How to Verify If Your Address Has Electricity Choice
If you are buying or renting a home along the I-35 corridor and are unsure whether you have retail electricity choice:
- Check Your Electric Service Identifier (ESI ID):
In deregulated Texas territories, every physical electric meter has a unique 17-to-22 digit ESI ID registered with ERCOT:
- If your meter begins with
1044372...(Oncor),1008901...(CenterPoint), or1003278...(AEP), you have retail electricity choice. - If your electric meter does not have an ERCOT ESI ID and you receive billing statements directly from the City of Austin or CPS Energy, you are in a municipal monopoly.
- If your meter begins with
- Use GetElectricity’s Address Checker: Enter your street address and ZIP code on GetElectricity. Our platform automatically queries ERCOT boundary tables to confirm whether your specific meter is eligible for retail competition.
The "So What?" Math Bridge: Municipal Rates vs. Deregulated Suburbs
How do costs compare between municipal monopolies and deregulated suburbs?
Both Austin Energy and CPS Energy utilize tiered inverted rate structures, meaning the more power you consume, the higher your price per kilowatt-hour climbs. By contrast, deregulated suburbs offer flat fixed-rate plans where your supply charge remains locked regardless of consumption.
| Usage Month | Austin Energy (City Limits) | Round Rock / Oncor Fixed Plan (11.2¢) | Suburban Difference (Monthly Savings) |
|---|---|---|---|
| Moderate Spring Month (1,000 kWh) | ~$148.50 (Tiered rates + base fees + PSA) | $161.79 ($112.00 supply + $49.79 Oncor) | Austin Energy is ~$13.29 cheaper at lower tiers |
| Peak Summer Heat Wave (2,500 kWh) | $425.00+ (Pushed into Tiers 4 & 5 > 14.5¢) | $397.89 ($280.00 supply + $117.89 Oncor) | Suburban Fixed Plan saves $27.11+ / month |
In peak summer heat, the suburban deregulated fixed plan saves over $27.00 per month because it avoids the penalty tiers imposed by municipal rate boards when air conditioners run continuously.
4 Rules for Shopping in Central Texas Deregulated Suburbs
If you reside in Round Rock, Pflugerville, Hutto, Killeen, or a deregulated section of Buda or Cibolo, follow these rules to maximize your savings:
- Lock In Fixed-Rate Certainty (12 to 36 Months): Central Texas summers place heavy strain on regional ERCOT generation. Avoid variable rate contracts that spike during triple-digit heat waves.
- Factor in Oncor Delivery Fees: Remember that Oncor delivery fees ($4.39/month + ~4.54¢/kWh) are passed through without markup. Read our complete guide to Oncor TDU Delivery Charges for line-item details.
- Beware of Minimum Usage Surcharges: Apartment renters and small homes in Round Rock or Pflugerville must avoid plans that penalize consumption under 1,000 kWh. Read our guide on The Minimum Usage Fee Trap.
- Utilize the 14-Day Free Switch Window: If your contract is expiring, switch penalty-free up to 14 days before your contract terminates under PUCT Rule §25.475.
Compare Competitive Electricity Plans on GetElectricity
Living in Central Texas gives you access to a dynamic energy landscape—whether you are moving into a suburban development or comparing rates for your existing home.
GetElectricity connects directly to your Smart Meter Texas history to evaluate hundreds of competitive plans across Round Rock, Pflugerville, Killeen, Temple, and deregulated Central Texas communities. We expose hidden fees, tiered pricing traps, and delivery surcharges before you enroll.
Enter your Central Texas ZIP code on GetElectricity to verify your choice eligibility and find genuine, low-cost fixed electricity plans.
Frequently Asked Questions
Can I choose my electricity provider in Austin or San Antonio?
No. Austin is served by Austin Energy and San Antonio by CPS Energy — both municipal utilities that never opted into retail competition, so customers inside the city limits are assigned a single provider. However, roughly 85% of Texans do have choice, and nearby communities such as Round Rock, Pflugerville, Hutto, Taylor, Killeen, and Temple are fully deregulated under Oncor, while Buda, Kyle, San Marcos, New Braunfels, Cibolo, and Schertz split by subdivision. To verify a specific address, check your meter's 17-to-22 digit ESI ID — prefixes like 1044372 (Oncor), 1008901 (CenterPoint), or 1003278 (AEP) confirm you have retail electricity choice.
Why can't Austin and San Antonio residents shop for electricity?
Texas deregulation under Senate Bill 7 in 1999 mandated competition for investor-owned utilities — TXU became Oncor and Houston Lighting & Power became CenterPoint — but created a statutory exemption for municipal utilities and electric cooperatives, allowing them to opt in to retail competition only by a vote of their governing boards. The Austin City Council and the CPS Energy Board of Trustees never opted in, largely because municipal utility revenues transfer hundreds of millions of dollars annually into city general funds that directly finance parks, police departments, and street maintenance.
Are municipal utility rates cheaper than deregulated plans?
It depends on usage. Austin Energy and CPS Energy use tiered inverted rates that reward low consumption: in a moderate 1,000 kWh spring month, an Austin Energy bill runs about $148.50 versus $161.79 for a Round Rock home on an 11.2¢ fixed plan. In a 2,500 kWh peak summer month, however, municipal usage pushes into Tier 4 and Tier 5 rates exceeding 14.5¢ per kWh plus elevated power supply adjustments — a $425.00+ bill — while the deregulated fixed plan holds at $397.89, saving over $27 per month by avoiding the municipal penalty tiers.