Best 12-Month Oncor Electricity Plans
Fixed-rate 12-month plans on the Oncor grid, ranked by estimated monthly cost at 1,000 kWh. All estimates include Oncor delivery charges.
Last updated: Jun 16, 2026
Estimated costs are informational. Provider rates and plan terms may change. Confirm current details directly with the provider.
What Are 12-Month Fixed-Rate Electricity Plans?
A 12-month fixed-rate electricity plan locks your energy supply rate for a full year. Your price per kWh stays the same regardless of market fluctuations. The TDSP delivery charges (from Oncor) are regulated separately by the Texas PUC and may change during your contract, but the energy portion of your bill remains stable.
Twelve-month plans are the most common contract length in Texas. They offer a balance between rate stability and flexibility — longer than short-term plans but without the multi-year commitment of 24- or 36-month contracts.
Current Oncor 12-Month Plans
Showing 10 active fixed-rate 12-month plans on the Oncor grid. Plans are ranked by estimated monthly cost at 1,000 kWh.
| Provider | Plan Name | Est. Monthly Cost | Effective Rate | Contract Length |
|---|---|---|---|---|
| TXU ENERGY | Smart Discount 12 | $125.00 | 12.5¢ | 12 months |
| TXU ENERGY | Free Nights & Solar Days 12 (9 p.m.) | $145.00 | 14.5¢ | 12 months |
| TXU ENERGY | Season Pass Plus A/C Care 12 | $145.00 | 14.5¢ | 12 months |
| TXU ENERGY | Super Secure 12 | $145.00 | 14.5¢ | 12 months |
| TXU ENERGY | Summer Pass 12 | $149.00 | 14.9¢ | 12 months |
| TXU ENERGY | Smart Value 12 | $157.00 | 15.7¢ | 12 months |
| TXU ENERGY | Solar Club 12 | $159.00 | 15.9¢ | 12 months |
| TXU ENERGY | Free Pass 12 | $164.00 | 16.4¢ | 12 months |
| TXU ENERGY | Clear Saver 12 | $171.00 | 17.1¢ | 12 months |
| TXU ENERGY | Freedom Rewards 12 | $236.00 | 23.6¢ | 12 months |
Why Compare Plans Using Actual Usage?
The table above uses the 1,000 kWh benchmark because it is the most common comparison point in Texas. But your actual usage may be higher or lower depending on your home size, season, and energy habits. A plan that ranks best at 1,000 kWh may not be the best at 750 or 1,500 kWh.
TrueBill lets you enter your own monthly usage for personalized rankings. You can also test nearby usage levels to see how sensitive each plan is to small changes.
About the Oncor Service Area
Oncor Electric Delivery is the largest transmission and distribution utility in Texas, serving over 10 million customers across North and Central Texas. The service territory includes Dallas, Fort Worth, Arlington, Plano, Frisco, McKinney, Irving, and parts of the Austin suburbs including Round Rock, Cedar Park, and Georgetown.
Oncor delivery charges are included in every TrueBill plan estimate. Many comparison sites show only the energy supply rate, which can make plans appear cheaper than they actually are.
Prices and plan availability can change. Estimated costs depend on usage, delivery territory, fees, credits, and plan terms. Customers should confirm final pricing and terms directly with the provider before enrolling. TrueBill Energy does not sell electricity or enroll customers.
Estimated costs are informational. Provider rates and plan terms may change. Confirm current details directly with the provider.