Fixed-rate electricity plans lock in your price per kWh for the full length of your contract — typically 6, 12, or 24 months. That means your energy charge stays exactly the same whether summer demand spikes or wholesale prices surge. For Harlingen households on AEP Texas, a fixed-rate plan is the single best way to protect your budget from price volatility and avoid bill shock during Texas heat waves.
All rates in ¢/kWh for ZIP 78550. AEP Texas delivery fee billed separately. Updated daily from licensed Texas REP data.
| Provider / Plan | 1,000 kWh ★ | Term | Action |
|---|---|---|---|
| Txu Energy Smart 1000 Select 12 3% Renewable |
10.9¢ | 12 mo | Enroll → |
| Veteran Energy Basic 12 3% Renewable |
12.2¢ | 12 mo | Enroll → |
| Express Energy Speedy 12 3% Renewable |
12.2¢ | 12 mo | Enroll → |
| Budget Power No Gimmicks Green 12 100% Renewable |
12.3¢ | 12 mo | Enroll → |
| Gexa Energy Gexa Eco Choice 12 100% Renewable |
12.3¢ | 12 mo | Enroll → |
| Companion Energy Companion + Perks 12 30% Renewable |
12.3¢ | 12 mo | Enroll → |
| Frontier Utilities Frontier Power Saver 12 30% Renewable |
12.3¢ | 12 mo | Enroll → |
| Chariot Energy Bright Nights 24 100% Renewable |
12.4¢ | 24 mo | Enroll → |
| Ae Texas Smart Secure 10 23% Renewable |
12.5¢ | 10 mo | Enroll → |
| Just Energy Sustainable Days Bundle - 6 31% Renewable |
12.6¢ | 6 mo | Enroll → |
| Tara Energy Balanced Days Bundle - 6 31% Renewable |
12.6¢ | 6 mo | Enroll → |
| True Power True Value 36 15% Renewable |
12.7¢ | 36 mo | Enroll → |
| Energy Texas No Bull 12 100% Renewable |
12.7¢ | 12 mo | Enroll → |
| Constellation Newenergy Inc Simple Switch 6 24% Renewable |
12.8¢ | 6 mo | Enroll → |
| Abundance Energy Straight Forward 12 25% Renewable |
12.8¢ | 12 mo | Enroll → |
| Sfe Energy Texas Inc SFE RewardsPlus - 12 35% Renewable |
12.8¢ | 12 mo | Enroll → |
| Think Energy Think Clean 12 with Smart Thermostat Connected 100% Renewable |
13.1¢ | 12 mo | Enroll → |
| Texans Choice Power Llc Choose 12 37% Renewable |
13.1¢ | 12 mo | Enroll → |
| Rhythm Digital Choice 24 100% Renewable |
13.2¢ | 24 mo | Enroll → |
| Infuse Energy Essential Infusion 36 24% Renewable |
13.3¢ | 36 mo | Enroll → |
| Bkv Energy Daisy 13 29% Renewable |
13.3¢ | 13 mo | Enroll → |
| Ap Gas & Electric (tx) Llc TrueClassic 36 6% Renewable |
13.3¢ | 36 mo | Enroll → |
| Revolution Energy Llc Stars and Stripes 18 24% Renewable |
13.4¢ | 18 mo | Enroll → |
| Champion Energy Services Llc Champ Saver-12 25% Renewable |
13.4¢ | 12 mo | Enroll → |
| Good Charlie & Co Llc GoodEnergy 36 25% Renewable |
13.4¢ | 36 mo | Enroll → |
| Spark Energy Llc Choose 15 37% Renewable |
13.8¢ | 15 mo | Enroll → |
| Southern Federal Power Llc SoFed Better Rate - 36 6% Renewable |
13.9¢ | 36 mo | Enroll → |
| Cleansky Energy Embrace Green 36 - New Customer Special 100% Renewable |
13.9¢ | 36 mo | Enroll → |
| Base Power Base Energy 36 100% Renewable |
14.2¢ | 36 mo | Enroll → |
| Discount Power Saver 24 22% Renewable |
14.3¢ | 24 mo | Enroll → |
| Ranchero Power Ranchero Smart & Fixed - 18 6% Renewable |
14.4¢ | 18 mo | Enroll → |
| Heritage Power Llc Bright Start 36 - $25 credit on your first bill! 24% Renewable |
14.4¢ | 36 mo | Enroll → |
| Cirro Energy Smart Simple 24 24% Renewable |
14.4¢ | 24 mo | Enroll → |
| Atlantex Power Luminous 10 23% Renewable |
14.5¢ | 10 mo | Enroll → |
| Trieagle Energy Lp Simple Savings 12 3% Renewable |
14.7¢ | 12 mo | Enroll → |
| Octopus Energy Octo Simple 12 100% Renewable |
14.7¢ | 12 mo | Enroll → |
| Octopus Energy Llc Octo Simple 24 100% Renewable |
15.1¢ | 24 mo | Enroll → |
| Direct Energy Autopay Texas 24 24% Renewable |
15.4¢ | 24 mo | Enroll → |
| Smartenergy Holdings Llc SmartGreen 9 $200 Bill Credit 100% Renewable |
15.4¢ | 9 mo | Enroll → |
| Amigo Energy Basics PTC - 24 31% Renewable |
15.5¢ | 24 mo | Enroll → |
| Reliant Reliant Power on 36 Plan 24% Renewable |
15.6¢ | 36 mo | Enroll → |
| Green Mountain Energy Company Pollution Free e-Plus 24 Choice 100% Renewable |
15.8¢ | 24 mo | Enroll → |
| Pronto Power Summer 2026 26% Renewable |
16.5¢ | 2 mo | Enroll → |
| Payless Power PTC 12 Month - Prepaid 26% Renewable |
17.4¢ | 12 mo | Enroll → |
★ 1,000 kWh is the Texas standard usage benchmark. Rates include energy charge; TDSP delivery fees billed separately.
Fixed pricing gives you predictability. You know exactly what you'll pay per kWh the day you enroll — and that rate doesn't change until your contract ends. This is especially valuable in Harlingen, where August temperatures routinely push electricity demand (and spot prices) to their highest levels of the year. Most fixed-rate plans also include a straightforward cancellation fee, so you can switch if a better deal appears.
Compare by what matters most to you.