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 licensed Texas REP data.
| Provider / Plan | 1,000 kWh ★ | Term | Action |
|---|---|---|---|
| Discount Power Bill Credit Bundle 25 22% Renewable |
7.2¢ | 25 mo | Enroll → |
| Cirro Energy Bill Bonus 25 22% Renewable |
7.2¢ | 25 mo | Enroll → |
| True Power True Value 12 15% Renewable |
11.6¢ | 12 mo | Enroll → |
| Tara Energy Balanced Days Bundle - 6 31% Renewable |
11.6¢ | 6 mo | Enroll → |
| Just Energy Sustainable Living Bundle - 6 31% Renewable |
11.6¢ | 6 mo | Enroll → |
| Budget Power No Gimmicks 12 35% Renewable |
11.7¢ | 12 mo | Enroll → |
| Frontier Utilities Frontier Power Saver 12 30% Renewable |
12.1¢ | 12 mo | Enroll → |
| Gexa Energy Gexa Eco Choice 12 100% Renewable |
12.1¢ | 12 mo | Enroll → |
| Energy Texas No Bull 12 100% Renewable |
12.1¢ | 12 mo | Enroll → |
| Companion Energy Companion + Perks 12 30% Renewable |
12.1¢ | 12 mo | Enroll → |
| Southern Federal Power Llc SoFed Better Rate - 12 6% Renewable |
12.3¢ | 12 mo | Enroll → |
| Varsity Energy Llc HOMERUN 12 31% Renewable |
12.3¢ | 12 mo | Enroll → |
| Chariot Energy Bright Nights 36 100% Renewable |
12.4¢ | 36 mo | Enroll → |
| Abundance Energy Straight Forward 12 25% Renewable |
12.5¢ | 12 mo | Enroll → |
| Cleansky Energy Embrace Green 12 - New Customer Special 100% Renewable |
12.5¢ | 12 mo | Enroll → |
| Bkv Energy Daisy 13 29% Renewable |
12.7¢ | 13 mo | Enroll → |
| Ap Gas & Electric (tx) Llc TrueClassic 6 6% Renewable |
12.7¢ | 6 mo | Enroll → |
| Ae Texas Smart Secure 36 35% Renewable |
12.7¢ | 36 mo | Enroll → |
| Rhythm Digital Choice 24 100% Renewable |
12.8¢ | 24 mo | Enroll → |
| Think Energy Think Clean 12 with Smart Thermostat Connected 100% Renewable |
12.9¢ | 12 mo | Enroll → |
| Sfe Energy Texas Inc SFE RewardsPlus - 14 35% Renewable |
12.9¢ | 14 mo | Enroll → |
| Texans Choice Power Llc Texas Instant 12 37% Renewable |
13¢ | 12 mo | Enroll → |
| Champion Energy Services Llc Champ Saver-12 26% Renewable |
13¢ | 12 mo | Enroll → |
| Infuse Energy Essential Infusion 6 24% Renewable |
13.1¢ | 6 mo | Enroll → |
| Constellation Newenergy Inc 14 Month 26% Renewable |
13.2¢ | 14 mo | Enroll → |
| Octopus Energy OctopusFlex 100% Renewable |
13.3¢ | 12 mo | Enroll → |
| Txu Energy Value Edge 12 3% Renewable |
13.5¢ | 12 mo | Enroll → |
| Good Charlie & Co Llc GoodEnergy 24 26% Renewable |
13.5¢ | 24 mo | Enroll → |
| Ranchero Power Smart & Fixed - 36 6% Renewable |
13.5¢ | 36 mo | Enroll → |
| Revolution Energy Llc Stars and Stripes 9 24% Renewable |
13.5¢ | 9 mo | Enroll → |
| Base Power Base Energy 36 100% Renewable |
13.6¢ | 36 mo | Enroll → |
| Spark Energy Llc Choose 15 37% Renewable |
13.6¢ | 15 mo | Enroll → |
| Octopus Energy Llc Octo Simple 14 100% Renewable |
13.7¢ | 14 mo | Enroll → |
| Trieagle Energy Lp Simple Savings 28 3% Renewable |
13.8¢ | 28 mo | Enroll → |
| Heritage Power Llc Bright Start 12 - $25 credit on your first bill! 25% Renewable |
14.1¢ | 12 mo | Enroll → |
| Direct Energy Autopay Texas 12 24% Renewable |
14.6¢ | 12 mo | Enroll → |
| Reliant Reliant Power On 12 Plan 24% Renewable |
14.7¢ | 12 mo | Enroll → |
| Atlantex Power Luminous 36 35% Renewable |
14.7¢ | 36 mo | Enroll → |
| Amigo Energy Basics PTC - 24 31% Renewable |
14.9¢ | 24 mo | Enroll → |
| Smartenergy Holdings Llc SmartGreen 24 $200 Bill Credit 100% Renewable |
14.9¢ | 24 mo | Enroll → |
| Green Mountain Energy Company Pollution Free e-Plus 24 Choice 100% Renewable |
15.3¢ | 24 mo | Enroll → |
| Pronto Power Power To Choose 26% Renewable |
16.9¢ | 1 mo | Enroll → |
| Payless Power PTC 6 Month - Prepaid 26% Renewable |
17¢ | 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 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.