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 Duncanville households on Oncor Electric, 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 75116. Oncor Electric delivery fee billed separately. Updated daily from Texas Power to Choose.
| Provider / Plan | 1,000 kWh ★ | Term | Action |
|---|---|---|---|
| Amigo Energy Sustainable Simply Days - 3 31% Renewable |
9.1¢ | 3 mo | Enroll → |
| Gexa Energy Gexa Eco Choice 3 100% Renewable |
9.2¢ | 3 mo | Enroll → |
| Energy Texas The Lone Saver 12 100% Renewable |
9.7¢ | 12 mo | Enroll → |
| Octopus Energy Octopus Lite 12 100% Renewable |
10.1¢ | 12 mo | Enroll → |
| Just Energy Smart Choice - 12 31% Renewable |
10.4¢ | 12 mo | Enroll → |
| Tara Energy Value Choice - 12 31% Renewable |
10.4¢ | 12 mo | Enroll → |
| Constellation Newenergy Inc 5 Month Usage Bill Credit 26% Renewable |
10.5¢ | 5 mo | Enroll → |
| Rhythm Digital Choice 4 100% Renewable |
11.1¢ | 4 mo | Enroll → |
| Bkv Energy Daisy 3 29% Renewable |
11.4¢ | 3 mo | Enroll → |
| Southern Federal Power Llc SoFed Try Us Out - 16 6% Renewable |
12.8¢ | 16 mo | Enroll → |
| Octopus Energy Llc Octo Simple 3 100% Renewable |
12.8¢ | 3 mo | Enroll → |
| True Power True Value 12 15% Renewable |
12.9¢ | 12 mo | Enroll → |
| Budget Power No Gimmicks 15 35% Renewable |
12.9¢ | 15 mo | Enroll → |
| Companion Energy Companion + Perks 12 30% Renewable |
13¢ | 12 mo | Enroll → |
| Frontier Utilities Frontier Power Saver 12 30% Renewable |
13¢ | 12 mo | Enroll → |
| Abundance Energy Confident Renter 12 25% Renewable |
13.2¢ | 12 mo | Enroll → |
| Cleansky Energy Embrace Green 12 - New Customer Special 100% Renewable |
13.3¢ | 12 mo | Enroll → |
| Ae Texas Smart Secure 15 35% Renewable |
13.3¢ | 15 mo | Enroll → |
| Chariot Energy Bright Nights 36 100% Renewable |
13.5¢ | 36 mo | Enroll → |
| Texans Choice Power Llc Choose 12 35% Renewable |
13.5¢ | 12 mo | Enroll → |
| Branch Energy (texas) Llc Branch Fixed 12 100% Renewable |
13.6¢ | 12 mo | Enroll → |
| Think Energy Think Clean 12 with Smart Thermostat Connected 100% Renewable |
13.7¢ | 12 mo | Enroll → |
| Infuse Energy Essential Infusion 6 26% Renewable |
13.8¢ | 6 mo | Enroll → |
| Trieagle Energy Lp Sure Value 36 3% Renewable |
13.9¢ | 36 mo | Enroll → |
| Txu Energy Value Edge 12 3% Renewable |
13.9¢ | 12 mo | Enroll → |
| Spark Energy Llc Choose 12 35% Renewable |
13.9¢ | 12 mo | Enroll → |
| Ap Gas & Electric (tx) Llc TrueClassic 36 6% Renewable |
14¢ | 36 mo | Enroll → |
| Revolution Energy Llc Stars and Stripes 36 26% Renewable |
14.1¢ | 36 mo | Enroll → |
| Cirro Energy Smart Simple 12 24% Renewable |
14.1¢ | 12 mo | Enroll → |
| Heritage Power Llc Bright Start 12 - $25 credit on your first bill! 25% Renewable |
14.5¢ | 12 mo | Enroll → |
| Good Charlie & Co Llc GoodEnergy 12 26% Renewable |
14.5¢ | 12 mo | Enroll → |
| Champion Energy Services Llc Champ Saver-24 26% Renewable |
14.7¢ | 24 mo | Enroll → |
| Green Mountain Energy Company Pollution Free e-Plus 36 Choice 100% Renewable |
15.1¢ | 36 mo | Enroll → |
| Atlantex Power Luminous 15 35% Renewable |
15.3¢ | 15 mo | Enroll → |
| Ranchero Power Ranchero Fixed Prime - 48 6% Renewable |
15.4¢ | 48 mo | Enroll → |
| Direct Energy Autopay Texas 36 24% Renewable |
15.6¢ | 36 mo | Enroll → |
| Reliant Reliant Power on 36 Plan 24% Renewable |
15.8¢ | 36 mo | Enroll → |
| Discount Power Discount Nights 24 24% Renewable |
16.2¢ | 24 mo | Enroll → |
| Payless Power PTC 6 Month - Prepaid 26% Renewable |
16.3¢ | 6 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 Duncanville, 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.