Oncor Electric · ZIP 78728

Cheapest Electricity Plans in Round Rock — Central (ZIP 78728), Texas

Live electricity rates for ZIP code 78728 in the Oncor Electric service area. 44 providers available — compare and enroll online in minutes.

7.2¢

Lowest Rate (1k kWh)

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13.4¢

Avg Rate (1k kWh)

Enter your ZIP for the most accurate rates

Providers

Current Rates in ZIP Code 78728

All rates in ¢/kWh. TDSP delivery fee from Oncor Electric billed separately on your monthly statement.

Provider / Plan	500 kWh	1,000 kWh ★	2,000 kWh	Term	Action
Chariot Energy GridPlus 12 100% Renewable	20.2¢	7.2¢	13.3¢	12 mo	Enroll →
Rhythm Rhythm Max Saver 12 100% Renewable	20.6¢	8.2¢	14.5¢	12 mo	Enroll →
Txu Energy Smart 1000 Select 12 3% Renewable	22.9¢	10.9¢	15.5¢	12 mo	Enroll →
Just Energy Sustainable Living Bundle - 5 31% Renewable	13¢	12.1¢	11.7¢	5 mo	Enroll →
Tara Energy Balanced Days Bundle - 5 31% Renewable	12.9¢	12.1¢	11.7¢	5 mo	Enroll →
Texans Choice Power Llc Choose 6 37% Renewable	12.6¢	12.2¢	12¢	6 mo	Enroll →
Southern Federal Power Llc SoFed Better Rate - 11 6% Renewable	13.2¢	12.2¢	11.8¢	11 mo	Enroll →
Veteran Energy Basic 12 3% Renewable	12.7¢	12.2¢	12¢	12 mo	Enroll →
Express Energy Speedy 12 3% Renewable	12.7¢	12.2¢	12¢	12 mo	Enroll →
Ranchero Power Ranchero Smart & Fixed - 5 6% Renewable	13.3¢	12.3¢	11.9¢	5 mo	Enroll →
Abundance Energy Confident Renter 12 25% Renewable	12.7¢	12.3¢	12.1¢	12 mo	Enroll →
Varsity Energy Llc HOMERUN 12 24% Renewable	12.7¢	12.3¢	12.1¢	12 mo	Enroll →
Frontier Utilities Frontier Power Saver 12 30% Renewable	12.8¢	12.4¢	12.2¢	12 mo	Enroll →
Companion Energy Companion + Perks 12 30% Renewable	12.8¢	12.4¢	12.2¢	12 mo	Enroll →
Gexa Energy Gexa Eco Choice 12 100% Renewable	12.8¢	12.4¢	12.2¢	12 mo	Enroll →
True Power True Value 36 15% Renewable	13.3¢	12.8¢	12.6¢	36 mo	Enroll →
Budget Power No Gimmicks 24 24% Renewable	13.2¢	12.8¢	12.6¢	24 mo	Enroll →
Ap Gas & Electric (tx) Llc TrueClassic 24 6% Renewable	13.3¢	12.9¢	12.7¢	24 mo	Enroll →
Ae Texas Smart Secure 36 23% Renewable	13.5¢	13¢	12.8¢	36 mo	Enroll →
Energy Texas No Bull 24 100% Renewable	13.2¢	13.2¢	13.3¢	24 mo	Enroll →
Infuse Energy Essential Infusion Green Flex 100% Renewable	13.9¢	13.3¢	13¢	1 mo	Enroll →
Spark Energy Llc Choose 12 37% Renewable	13.7¢	13.3¢	13.1¢	12 mo	Enroll →
Good Charlie & Co Llc GoodEnergy 24 25% Renewable	14.3¢	13.4¢	13¢	24 mo	Enroll →
Sfe Energy Texas Inc SFE RewardsPlus - 14 35% Renewable	14.6¢	13.6¢	13.1¢	14 mo	Enroll →
Revolution Energy Llc Stars and Stripes 36 24% Renewable	14.5¢	13.7¢	13.3¢	36 mo	Enroll →
Champion Energy Services Llc Champ Saver-24 25% Renewable	14.1¢	13.7¢	13.5¢	24 mo	Enroll →
Think Energy Think Clean 12 with Smart Thermostat Connected 100% Renewable	13.7¢	13.8¢	13.9¢	12 mo	Enroll →
Octopus Energy Octo Simple 18 100% Renewable	14.2¢	13.8¢	13.6¢	18 mo	Enroll →
Bkv Energy Daisy 14 29% Renewable	14.3¢	13.9¢	13.7¢	14 mo	Enroll →
Octopus Energy Llc Octo Simple 24 100% Renewable	14.3¢	13.9¢	13.7¢	24 mo	Enroll →
Pronto Power Summer 2026 26% Renewable	15.5¢	13.9¢	13.7¢	3 mo	Enroll →
Cleansky Energy Embrace Green 24 - New Customer Special 100% Renewable	14.4¢	14¢	13.8¢	24 mo	Enroll →
Smartenergy Holdings Llc SmartGreen 12 $200 Bill Credit 100% Renewable	15.1¢	14.2¢	13.8¢	12 mo	Enroll →
Base Power Base Energy 36 100% Renewable	14.6¢	14.2¢	14¢	36 mo	Enroll →
Atlantex Power Luminous 10 23% Renewable	14.9¢	14.4¢	14.2¢	10 mo	Enroll →
Discount Power Saver 12 22% Renewable	14.9¢	14.4¢	14.2¢	12 mo	Enroll →
Heritage Power Llc Bright Start 12 - $25 credit on your first bill! 24% Renewable	15.4¢	15¢	14.8¢	12 mo	Enroll →
Cirro Energy Smart Simple 36 24% Renewable	15.6¢	15.1¢	14.9¢	36 mo	Enroll →
Direct Energy Autopay Texas 12 24% Renewable	16.3¢	15.4¢	14.9¢	12 mo	Enroll →
Constellation Newenergy Inc 12 Month A/C Protect Plus for 2 Units 24% Renewable	19.4¢	15.5¢	16.3¢	12 mo	Enroll →
Amigo Energy Basics PTC - 36 31% Renewable	16.3¢	15.9¢	15.7¢	36 mo	Enroll →
Reliant Reliant Power On 24 Plan 24% Renewable	16.9¢	16¢	15.5¢	24 mo	Enroll →
Nec Co-op Energy Residential Electricity... Plain and simple. 15% Renewable	18.4¢	17.2¢	16.6¢	Variable	Enroll →
Green Mountain Energy Company Pollution Free e-Plus Choice 100% Renewable	19.3¢	18.4¢	17.9¢	Variable	Enroll →

★ 1,000 kWh is the Texas standard usage benchmark. Rates include energy charge; TDSP delivery fees billed separately.

About ZIP Code 78728 — Round Rock — Central

ZIP code 78728 is part of the Oncor Electric electric delivery territory in Texas's deregulated electricity market. Residents and businesses in this area can freely choose their Retail Electric Provider (REP) from dozens of competing companies. Your Oncor Electric delivery charges stay the same regardless of which REP you select.

Other ZIP Codes in Dallas-Fort Worth & North Texas

78664 78665 78681 78727

← Back to Oncor Electric territory overview

Frequently Asked Questions about ZIP 78728

What is the cheapest electricity rate in ZIP code 78728?

The lowest available plan in ZIP 78728 today is Chariot Energy — GridPlus 12 at 7.2¢/kWh for 1,000 kWh usage. At 500 kWh usage the rate is 20.2¢/kWh and at 2,000 kWh it is 13.3¢/kWh. Rates are pulled live from licensed Texas REP plan data.

Who delivers electricity in ZIP code 78728?

ZIP code 78728 is served by Oncor Electric Delivery Company. Oncor Electric owns and maintains the local power lines and is responsible for restoring service during outages. Your energy rate is set by the Retail Electric Provider (REP) you choose — Oncor Electric charges are fixed delivery fees on your bill.

How do I switch electricity providers in ZIP code 78728?

Choose a plan in the table above and click "Enroll →". The entire process takes about 5 minutes online. Your Oncor Electric delivery service continues uninterrupted during the switch. If you are currently under contract, check your cancellation fee before switching — most REPs charge $50–$300 for early termination.