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 Sienna households on CenterPoint Energy, 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 77459. CenterPoint Energy delivery fee billed separately. Updated daily from Texas Power to Choose.
| Provider / Plan | 1,000 kWh ★ | Term | Action |
|---|---|---|---|
| Chariot Energy GridPlus 12 100% Renewable |
7.9¢ | 12 mo | Enroll → |
| Tara Energy Balanced Days Bundle - 3 31% Renewable |
9.3¢ | 3 mo | Enroll → |
| Amigo Energy Sustainable Simply Days - 3 31% Renewable |
9.3¢ | 3 mo | Enroll → |
| Gexa Energy Gexa Eco Choice 3 100% Renewable |
9.4¢ | 3 mo | Enroll → |
| Energy Texas No Bull 3 100% Renewable |
9.9¢ | 3 mo | Enroll → |
| Constellation Newenergy Inc Simple Switch 4 26% Renewable |
10.6¢ | 4 mo | Enroll → |
| Rhythm Digital Choice 4 100% Renewable |
10.8¢ | 4 mo | Enroll → |
| Southern Federal Power Llc SoFed Try Us Out - 16 6% Renewable |
12.3¢ | 16 mo | Enroll → |
| Octopus Energy Octo Green 12 100% Renewable |
12.4¢ | 12 mo | Enroll → |
| Revolution Energy Llc Stars and Stripes 12 26% Renewable |
12.5¢ | 12 mo | Enroll → |
| Companion Energy Companion + Perks 12 30% Renewable |
12.5¢ | 12 mo | Enroll → |
| Frontier Utilities Frontier Power Saver 12 30% Renewable |
12.5¢ | 12 mo | Enroll → |
| True Power True Value 24 15% Renewable |
12.8¢ | 24 mo | Enroll → |
| Cirro Energy Smart Simple 15 21% Renewable |
12.9¢ | 15 mo | Enroll → |
| Infuse Energy Essential Infusion 24 26% Renewable |
12.9¢ | 24 mo | Enroll → |
| Branch Energy (texas) Llc Branch Fixed 12 100% Renewable |
13.1¢ | 12 mo | Enroll → |
| Budget Power No Gimmicks 36 35% Renewable |
13.1¢ | 36 mo | Enroll → |
| Texans Choice Power Llc Choose 6 35% Renewable |
13.3¢ | 6 mo | Enroll → |
| Abundance Energy Clean Energy 12 100% Renewable |
13.4¢ | 12 mo | Enroll → |
| Cleansky Energy Embrace Green 24 - New Customer Special 100% Renewable |
13.4¢ | 24 mo | Enroll → |
| Ap Gas & Electric (tx) Llc TrueClassic 36 6% Renewable |
13.5¢ | 36 mo | Enroll → |
| Txu Energy Value Edge 12 3% Renewable |
13.5¢ | 12 mo | Enroll → |
| Bkv Energy Daisy 18 29% Renewable |
13.7¢ | 18 mo | Enroll → |
| Spark Energy Llc Choose 12 35% Renewable |
13.7¢ | 12 mo | Enroll → |
| Trieagle Energy Lp Simple Savings 28 3% Renewable |
13.8¢ | 28 mo | Enroll → |
| Octopus Energy Llc Octo Simple 24 100% Renewable |
13.8¢ | 24 mo | Enroll → |
| Ae Texas Smart Secure 36 35% Renewable |
13.9¢ | 36 mo | Enroll → |
| Heritage Power Llc Bright Start 24 - $25 credit on your first bill! 25% Renewable |
14¢ | 24 mo | Enroll → |
| Think Energy Think Clean 12 100% Renewable |
14.3¢ | 12 mo | Enroll → |
| Green Mountain Energy Company Pollution Free e-Plus 36 Choice 100% Renewable |
14.4¢ | 36 mo | Enroll → |
| Champion Energy Services Llc Champ Saver-24 26% Renewable |
14.5¢ | 24 mo | Enroll → |
| Good Charlie & Co Llc GoodEnergy 24 26% Renewable |
14.5¢ | 24 mo | Enroll → |
| Discount Power Discount Nights 24 24% Renewable |
14.8¢ | 24 mo | Enroll → |
| Ranchero Power Ranchero Fixed Prime - 48 6% Renewable |
14.8¢ | 48 mo | Enroll → |
| Reliant Reliant Power On 24 Plan 24% Renewable |
14.8¢ | 24 mo | Enroll → |
| Just Energy Basics PTC - 60 31% Renewable |
14.9¢ | 60 mo | Enroll → |
| Direct Energy Autopay Texas 36 24% Renewable |
14.9¢ | 36 mo | Enroll → |
| Atlantex Power Luminous 15 35% Renewable |
14.9¢ | 15 mo | Enroll → |
| Payless Power PTC 12 Month - Prepaid 26% Renewable |
15.8¢ | 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 Sienna, 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.