Home › AEP Texas TDU Territory › ZIP 78578
AEP Texas · ZIP 78578

Cheapest Electricity Plans in Port Isabel — Downtown (ZIP 78578), Texas

Live electricity rates for ZIP code 78578 in the AEP Texas service area. 45 providers available — compare and enroll online in minutes.

6.9¢
Lowest Rate (1k kWh)
Enter your ZIP for the most accurate rates
13.4¢
Avg Rate (1k kWh)
Enter your ZIP for the most accurate rates
45
Providers

Current Rates in ZIP Code 78578

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

Provider / Plan 500 kWh 1,000 kWh ★ 2,000 kWh Term Action
Express Energy
Flash Value 12
3% Renewable
 19.8¢ 6.9¢ 13¢ 12 mo Enroll →
Rhythm
Rhythm Max Saver 12
100% Renewable
 20.1¢ 7.8¢ 14.1¢ 12 mo Enroll →
Just Energy
Smart Choice - 12
31% Renewable
 22.5¢ 9.7¢ 15.7¢ 12 mo Enroll →
Txu Energy
Smart 1000 Select 12
3% Renewable
 22.9¢ 10.9¢ 15.6¢ 12 mo Enroll →
True Power
True Value 12
15% Renewable
 12.5¢ 12.1¢ 12¢ 12 mo Enroll →
Veteran Energy
Basic 12
3% Renewable
 12.5¢ 12.2¢ 12¢ 12 mo Enroll →
Constellation Newenergy Inc
12 Month Usage Bill Credit
24% Renewable
 16.1¢ 12.3¢ 13.1¢ 12 mo Enroll →
Budget Power
No Gimmicks Green 12
100% Renewable
 12.7¢ 12.3¢ 12.2¢ 12 mo Enroll →
Companion Energy
Companion + Perks 12
30% Renewable
 12.7¢ 12.3¢ 12.2¢ 12 mo Enroll →
Gexa Energy
Gexa Eco Choice 12
100% Renewable
 12.7¢ 12.3¢ 12.2¢ 12 mo Enroll →
Frontier Utilities
Frontier Power Saver 12
30% Renewable
 12.7¢ 12.3¢ 12.2¢ 12 mo Enroll →
Ae Texas
Smart Secure 10
23% Renewable
 12.9¢ 12.5¢ 12.4¢ 10 mo Enroll →
Chariot Energy
Bright Nights 18
100% Renewable
 14¢ 12.6¢ 12¢ 18 mo Enroll →
Tara Energy
Sustainable Home Bundle - 6
31% Renewable
 13.3¢ 12.6¢ 12.2¢ 6 mo Enroll →
Ap Gas & Electric (tx) Llc
TrueClassic 6
6% Renewable
 12.9¢ 12.6¢ 12.4¢ 6 mo Enroll →
Good Charlie & Co Llc
GoodEnergy 12
25% Renewable
 13.7¢ 12.8¢ 12.4¢ 12 mo Enroll →
Abundance Energy
Straight Forward 12
25% Renewable
 13.6¢ 12.8¢ 12.4¢ 12 mo Enroll →
Sfe Energy Texas Inc
SFE RewardsPlus - 14
35% Renewable
 14.1¢ 13.2¢ 12.8¢ 14 mo Enroll →
Spark Energy Llc
Choose 6
37% Renewable
 13.6¢ 13.2¢ 13.1¢ 6 mo Enroll →
Southern Federal Power Llc
SoFed Better Rate - 12
6% Renewable
 14.2¢ 13.3¢ 12.9¢ 12 mo Enroll →
Champion Energy Services Llc
Champ Saver-12
25% Renewable
 13.7¢ 13.4¢ 13.2¢ 12 mo Enroll →
Bkv Energy
Daisy 24
29% Renewable
 13.8¢ 13.5¢ 13.4¢ 24 mo Enroll →
Texans Choice Power Llc
Texas Instant 12
37% Renewable
 27¢ 13.5¢ 13.8¢ 12 mo Enroll →
Energy Texas
No Bull 36
100% Renewable
 13.6¢ 13.7¢ 13.8¢ 36 mo Enroll →
Cleansky Energy
Embrace Green 12 - New Customer Special
100% Renewable
 14¢ 13.7¢ 13.5¢ 12 mo Enroll →
Revolution Energy Llc
Liberty Bell Green Flex
100% Renewable
 14.4¢ 13.8¢ 13.5¢ 1 mo Enroll →
Infuse Energy
Essential Infusion Green Flex
100% Renewable
 14.4¢ 13.8¢ 13.6¢ 1 mo Enroll →
Discount Power
Saver 12
24% Renewable
 14.3¢ 13.9¢ 13.8¢ 12 mo Enroll →
Trieagle Energy Lp
Sure Value 36
3% Renewable
 17.5¢ 14¢ 15.2¢ 36 mo Enroll →
Heritage Power Llc
Bright Start 24 - $25 credit on your first bill!
24% Renewable
 14.5¢ 14.1¢ 14¢ 24 mo Enroll →
Base Power
Base Energy 36
100% Renewable
 14.5¢ 14.2¢ 14¢ 36 mo Enroll →
Atlantex Power
Luminous 10
23% Renewable
 14.9¢ 14.5¢ 14.4¢ 10 mo Enroll →
Cirro Energy
Smart Simple 36
24% Renewable
 15¢ 14.6¢ 14.5¢ 36 mo Enroll →
Think Energy
Think Clean 24
100% Renewable
 15.6¢ 14.7¢ 14.3¢ 24 mo Enroll →
Reliant
Reliant Power On 18
15% Renewable
 15.7¢ 14.9¢ 14.4¢ 18 mo Enroll →
Direct Energy
Autopay Texas 12
24% Renewable
 15.7¢ 14.9¢ 14.4¢ 12 mo Enroll →
Octopus Energy
Octo Simple 18
100% Renewable
 15.3¢ 15¢ 14.8¢ 18 mo Enroll →
Smartenergy Holdings Llc
SmartGreen 12 $200 Bill Credit
100% Renewable
 15.9¢ 15.1¢ 14.7¢ 12 mo Enroll →
Octopus Energy Llc
Octo Simple 24
100% Renewable
 15.4¢ 15.1¢ 14.9¢ 24 mo Enroll →
Ranchero Power
Ranchero Fixed Prime - 48
6% Renewable
 16.2¢ 15.3¢ 14.9¢ 48 mo Enroll →
Amigo Energy
Basics PTC - 24
31% Renewable
 15.8¢ 15.5¢ 15.3¢ 24 mo Enroll →
Green Mountain Energy Company
Pollution Free e-Plus 36 Choice
100% Renewable
 17¢ 16.2¢ 15.8¢ 36 mo Enroll →
Pronto Power
Summer 2026
26% Renewable
 16.5¢ 16.5¢ 16.5¢ 2 mo Enroll →
Nec Co-op Energy
Residential Electricity... Plain and simple.
15% Renewable
 17.9¢ 16.8¢ 16.3¢ Variable Enroll →
Payless Power
PTC 6 Month - Prepaid
26% Renewable
 17.9¢ 17.6¢ 17.4¢ 6 mo Enroll →

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

About ZIP Code 78578 — Port Isabel — Downtown

ZIP code 78578 is part of the AEP Texas 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 AEP Texas delivery charges stay the same regardless of which REP you select.

Other ZIP Codes in South & West Texas

78597785667852078521

← Back to AEP Texas territory overview

Frequently Asked Questions about ZIP 78578

What is the cheapest electricity rate in ZIP code 78578?
The lowest available plan in ZIP 78578 today is Express Energy — Flash Value 12 at 6.9¢/kWh for 1,000 kWh usage. At 500 kWh usage the rate is 19.8¢/kWh and at 2,000 kWh it is 13¢/kWh. Rates are pulled live from licensed Texas REP plan data.
Who delivers electricity in ZIP code 78578?
ZIP code 78578 is served by AEP Texas (Central & North). AEP Texas 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 — AEP Texas charges are fixed delivery fees on your bill.
How do I switch electricity providers in ZIP code 78578?
Choose a plan in the table above and click "Enroll →". The entire process takes about 5 minutes online. Your AEP Texas 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.