The Texas flag waving in front of a high-voltage grid tower in Round Rock Texas, a major deregulated electricity market in the Oncor TDU territory

Best Electricity Rates in Round Rock

Edited by Rafael Morales
Last updated:

To find the best electricity rates in Round Rock, we compare plans from provider websites, Power to Choose, and select sponsor offers. We only show True Fixed plans—no gimmicks, no free night traps, and no hidden fees.

For a list of the best Free Nights, Free Weekends, and Prepaid plans in Round Rock, follow these links: Best Free Nights plans, Best Free Weekends plans, and No-credit-check prepaid plans.

Our Recommendation

Our Recommendation
Atlantex Power
★ ★ ★ ★ ★
Full review

Luminous

Term: 14 months
500 kWh
13.6¢
1000 kWh
13.1¢
2000 kWh
12.9¢
Image created by Rafael Morales with AI for Clear Energy Facts

Cheapest Electricity Rates in Round Rock

True Fixed Rate plans only, enter zipcode for full list and more details

Check details in your area
1st
Review
SoFed Better Rate - 12
PTC
Apr 11
12 months
500 KWH
13.3¢
1000 KWH
12.3¢
2000 KWH
11.9¢

Top concerns

⚠️ High Complain Ratio. 2 on PUCT score

2nd
Review
True Value 12
PTC
Apr 11
12 months
500 KWH
12.8¢
1000 KWH
12.4¢
2000 KWH
12.2¢

Top concerns

⚠️ ⚠️ ⚠️ Risk of account being transferred

⚠️ ⚠️ ⚠️ Need to call for Autopay setup

⚠️ ⚠️ One of the highest cancellation fees

⚠️ ⚠️ High Complain Ratio. 1 on PUCT score

3rd
Review
No Gimmicks 14
PTC
Apr 11
14 months
500 KWH
12.9¢
1000 KWH
12.4¢
2000 KWH
12.2¢

Top concerns

⚠️⚠️⚠️ Risk of account being transferred

⚠️⚠️ Poor Customer Service on Google Reviews

4th
Review
Ranchero Smart & Fixed - 12
PTC
Apr 11
12 months
500 KWH
13.4¢
1000 KWH
12.4¢
2000 KWH
12.0¢

Top concerns

⚠️ High Complain Ratio. 2 on PUCT score

5th
Review
Gexa Eco Choice 12
100% Renewable
PTC
Apr 11
12 months
500 KWH
13.0¢
1000 KWH
12.5¢
2000 KWH
12.3¢

Top concerns

⚠️ High Complain Ratio. 2 on PUCT score

6th
Review
Power Saver 12
PTC
Apr 11
12 months
500 KWH
13.0¢
1000 KWH
12.5¢
2000 KWH
12.3¢

Top concerns

⚠️ High Complain Ratio. 2 on PUCT score

7th
Review
Companion + Perks 12
PTC
Apr 11
12 months
500 KWH
13.0¢
1000 KWH
12.5¢
2000 KWH
12.3¢

Top concerns

⚠️ High Complain Ratio. 2 on PUCT score

8th
Review
No Gimmicks 12
PTC
Apr 11
12 months
500 KWH
13.0¢
1000 KWH
12.5¢
2000 KWH
12.3¢

Top concerns

⚠️⚠️⚠️ Risk of account being transferred

⚠️⚠️ Poor Customer Service on Google Reviews

9th
Review
Octo Green 12
100% Renewable
Company website
Apr 07
12 months
500 KWH
13.0¢
1000 KWH
12.5¢
2000 KWH
12.3¢

Top concerns

⚠️ ⚠️ 2% Credit/debit card processing fee

10th
Review
SoFed Better Rate - 12
Company website
Apr 09
12 months
500 KWH
13.5¢
1000 KWH
12.5¢
2000 KWH
12.1¢

Top concerns

⚠️ High Complain Ratio. 2 on PUCT score

Showing the best available 500 / 1000 / 2000 kWh prices for the selected term range. Sources include PowerToChoose (“PTC”) and direct provider sites. We are not affiliated with PowerToChoose.org or the Public Utility Commission of Texas; these offers are shown for informational purposes only.

TDU Contact and Outage Information for Round Rock

The main ZIP codes for Round Rock are 78664, 78665, and 78681. Oncor delivers electricity to homes in Round Rock and is also the company you should contact if you experience a power outage in your area. 

Although Round Rock is very close to Austin, Round Rock residents generally still shop in a deregulated market, which can create confusion because nearby Austin is served by Austin Energy in a regulated service area.

Utility Service Contacts

ONCOR

Visit TDU Website Open Outage Map

Support Phone

888-313-4747

Round Rock Housing & Heating Facts

Local housing and heating composition based on city profile inputs.

Median Year Built

2002

  • Located just north of Austin, Round Rock has a mixed energy profile. Houses make up most of the housing stock, but apartments still represent a meaningful share of the city. Heating is also split almost evenly between gas and electricity, which means your winter bill can vary a lot depending on your housing type and heating setup.
  • In most cases, summer air conditioning will still be the main driver of your electric bill. But winter can also bring noticeable increases in usage, especially if you live in an apartment or in a home with electric heating. Use the table below to compare estimated costs based on your housing and heating situation.

Source: U.S. Census Bureau. "Selected Housing Characteristics." American Community Survey, ACS 5-Year Estimates Data Profiles, Table DP04.

Heating Type Share

Electricity 47.3%
Gas 50.2%
Other 2.5%

Housing Mix Share

House 67.4%
Apartment 27.8%
Other 4.8%

Bill Estimator in Round Rock Using Competitive Market Rates

Pick housing type, heating type, and plan type to estimate seasonal monthly bills.

Bill Estimator for Apartments

Atlantex Power

Luminous

Atlantex Power · 14 mo

Season Usage Estimated Bill
Dec - Feb -- --
Mar - May -- --
Jun - Aug -- --
Sep - Nov -- --

Bill Estimator for Houses

Atlantex Power

Luminous

Atlantex Power · 14 mo

Season Usage Estimated Bill
Dec - Feb -- --
Mar - May -- --
Jun - Aug -- --
Sep - Nov -- --

Top 5 Reviewed Electricity Companies in Round Rock

Highest review scores among True Fixed providers currently listed for Round Rock.

Rank #1 Score 4.52/5
Abundance Energy

Abundance Energy

★ ★ ★ ★ ★

From 12.9¢ @ 1000 kWh

9 eligible plans

Read Full Review
Rank #2 Score 4.42/5
Texans Choice Power

Texans Choice Power

★ ★ ★ ★ ★

From 12.8¢ @ 1000 kWh

2 eligible plans

Read Full Review
Rank #3 Score 4.31/5
Branch Energy

Branch Energy

★ ★ ★ ★ ★

From 13.6¢ @ 1000 kWh

1 eligible plans

Read Full Review
Rank #4 Score 4.23/5
Champion Energy

Champion Energy

★ ★ ★ ★ ★

From 14.0¢ @ 1000 kWh

5 eligible plans

Read Full Review
Rank #5 Score 4.14/5
Constellation

Constellation

★ ★ ★ ★ ★

From 15.7¢ @ 1000 kWh

1 eligible plans

Read Full Review

The Risk of Chasing the Cheapest Plans in Round Rock

here are two common risks when shopping for electricity in Round Rock.

1. Chasing the absolute cheapest rate online
This is one of the biggest mistakes shoppers make. In many cases, the cheapest rate you find on other websites, Google AI summaries, or ChatGPT may lead you to a bill credit plan.
That is a problem because bill credit plans are some of the most misleading plans in the Texas deregulated market. They can look very cheap at first, but if your monthly usage does not fall within the right range, your bill can end up much higher than expected. In some cases, people overpay by hundreds of dollars over the life of the contract, especially if they live in a small apartment or have lower usage.
That is why this page does not include gimmick plans.

2. Chasing the cheapest true fixed plan
Even when you focus only on true fixed plans, there is still another risk. On Power to Choose and on this page, we show the cheapest true fixed plans for transparency. However, some of the companies offering those lowest rates may come with billing, communication, and customer service problems. For example, they may later sell your contract to another company, communication may be poor, billing may become confusing, or customer support may be weak.

Sometimes the lowest-priced companies are able to offer those rates because they cut costs in other areas, and that can affect the overall customer experience.

For the sake of transparency, we still show those plans. But we also highlight competitive options from partner companies that have a stronger track record for service and reliability.
In many cases, the difference between the absolute cheapest plan and a stronger, more dependable company is not very large. It may be only a few dollars per month, and for many shoppers, that small extra cost is worth it for better service and fewer headaches.

Origin of the Plans on This List in Round Rock

Clear Energy Facts collects plan information in three ways:

1. Provider Websites
If a plan has the tag “Company Website”, it means the plan was found directly on the provider’s own website. You can access these plans through our link, or you can go directly to the company’s website yourself.
One important note: try not to use the sponsored links that appear on Google when shopping for electricity. Some providers show different rates depending on how you reached their site, including promo links, special landing pages, or paid ads.
For more information, see this article: Texas Electricity Promo Codes and Secret URLs

 
2. Power to Choose (PTC)
If a plan has the tag “PTC”, it means the plan is listed on Power to Choose, the official Texas electricity shopping website.
Even though you can access these plans directly on Power to Choose, we recommend using our link because we review, filter, and categorize them first. Many plans on Power to Choose are not truly fixed-rate plans, even if they may look attractive at first.
So if we tag a plan on this page as a fixed-rate plan, it means we have already reviewed it and confirmed that it is not a time-of-use plan, a bill credit plan, or another gimmick plan type.

3. Exclusive Plans
If a plan has the tag “Exclusive”, it means Clear Energy Facts has a direct partnership with the provider and can offer a competitive rate that may not be widely available on other shopping platforms.
These plans are still reviewed the same way as the others, and when we include them on our list, it is because we believe they are competitive options for shoppers in Round Rock.

Frequently Asked Questions about Electricity Rates in Round Rock

What is the best 12-month True Fixed rate in Round Rock right now?

The Cheapest 12-month True Fixed plan right now in Round Rock is Southern Federal — SoFed Better Rate - 12, with a rate of 12.3¢/kWh at 1000 kWh.

What is the average electricity bill in Round Rock for a small apartment (electric heating)?

Using our recommended 12-month style plan Luminous from Atlantex Power, the estimated monthly bill in Round Rock for a small apartment with electric heating is $86.84.

What is the average electricity bill in Round Rock for a medium house (electric heating)?

Using our recommended 12-month style plan Luminous from Atlantex Power, the estimated monthly bill in Round Rock for a medium house with electric heating is $134.49.

What is the average electricity bill in Round Rock for a medium house (gas heating)?

Using our recommended 12-month style plan Luminous from Atlantex Power, the estimated monthly bill in Round Rock for a medium house with gas heating is $120.19.

How do I know if a plan I choose is a True Fixed plan in Round Rock?

If you find a plan that looks good on another provider’s website, in an online ad, or even on Power to Choose, you can still use Clear Energy Facts to double-check it.

First, download or open the plan’s Electricity Facts Label (EFL). Then compare it using our EFL Inspector: EFL Inspector .

This tool helps you tell whether a plan is truly fixed, a bill-credit plan, a free nights/weekends offer, or something else.

Which TDU serves Round Rock?

The primary TDU serving Round Rock is ONCOR. This TDU owns and maintains local delivery poles and wires, and also manages outage restoration.

How do I confirm the correct TDU for my address in Round Rock?

Check your current electricity bill or service paperwork for the delivery utility name. If you are moving, enter your ZIP code and address during enrollment to confirm the exact TDU.