San Marcos Electricity Rates & Plans
Compare plans in San Marcos by estimated monthly cost at your usage, with Oncor delivery charges included.
Estimated costs are informational. Provider rates and plan terms may change. Confirm current details directly with the provider.
Active plans with valid pricing data. Refreshed every 6 hours. Confirm current rates with the provider before enrolling.
San Marcos, home to Texas State University, has a unique electricity market with a high proportion of renters and students alongside a growing permanent resident base. Served by Oncor, San Marcos residents can choose from the same range of statewide providers as any other Oncor territory. Smaller apartments housing 1–2 students often use 500–800 kWh monthly, well below the 1,000 kWh benchmark used by most advertised rates.
Students and renters in San Marcos should focus on plans that look good at 500–700 kWh rather than 1,000 kWh; many advertised 'low rates' assume usage thresholds that renters never hit.
San Marcos Electricity Rates — July 2026
In the week of July 20, 2026, 151 standard-priced plans from 43 providers were on the market in Oncor territory. At 1,000 kWh, the cheapest works out to 7.1¢/kWh all-in (about $71 for the month), and the territory average is 14.3¢/kWh — down 0.1¢ vs the week of June 22, 2026. All figures include Oncor delivery charges.
| Monthly usage | Cheapest rate | Average rate | Cheapest est. bill | Average est. bill |
|---|---|---|---|---|
| 500 kWh | 11.8¢/kWh | 15.4¢/kWh | $59/mo | $77/mo |
| 1,000 kWh | 7.1¢/kWh | 14.3¢/kWh | $71/mo | $143/mo |
| 2,000 kWh | 11.2¢/kWh | 14.2¢/kWh | $224/mo | $285/mo |
Standard-priced plans in the Oncor service territory tracked in the TrueBill database, weekly snapshot from July 20, 2026. Rate = estimated all-in monthly bill (energy + Oncor delivery charges) divided by usage — the same average-price definition the Electricity Facts Label uses. Time-of-use and free-period plans are excluded from rate figures. Oncor delivery charges are identical across the territory, so these rates apply to San Marcos addresses served by Oncor. Plan pricing changes often — confirm current terms with the provider.
See how Texas electricity rates have trended · Monthly Texas market reports
Provider Rates on the Oncor Grid This Week
Lowest and average all-in rates per provider at 1,000 kWh, from the snapshot for the week of July 20, 2026.
| Provider | Plans | Lowest rate | Avg rate |
|---|---|---|---|
| AP GAS & ELECTRIC (TX) LLC | 6 | 7.10¢ | 12.05¢ |
| Chariot Energy | 6 | 7.25¢ | 11.41¢ |
| Discount Power | 4 | 8.36¢ | 13.15¢ |
| JUST ENERGY | 7 | 9.72¢ | 13.05¢ |
| TARA ENERGY | 7 | 11.03¢ | 13.31¢ |
| AMIGO ENERGY | 5 | 11.43¢ | 16.70¢ |
| TRUE POWER | 3 | 11.75¢ | 12.41¢ |
| Budget Power | 5 | 11.84¢ | 12.34¢ |
| Octopus Energy | 3 | 12.00¢ | 18.33¢ |
| VARSITY ENERGY LLC | 1 | 12.03¢ | 12.03¢ |
Rates are EFL average prices at 1,000 kWh including Oncor delivery charges. This is territory-level data — identical for every city on the Oncor grid, because providers price by TDSP territory, not by city. Full history on the Texas rate history page.
Typical Homes in San Marcos
San Marcos has a high proportion of student rentals near Texas State University, including off-campus apartments, duplexes, and 2–4 bedroom rental houses. The permanent resident base lives in 1,500–2,200 sq ft single-family homes in established neighborhoods like Blanco Vista, Cimarron, and Redwood, creating wider housing diversity than most similarly-sized Texas cities.
Why San Marcos Residents Compare Electricity Plans
Students and renters in San Marcos compare plans because advertised benchmark rates assume 1,000 kWh, but most apartments and small rental homes here use 400–700 kWh monthly. Comparing at lower usage levels identifies plans without high base charges that are genuinely competitive for smaller households rather than plans priced for large-home consumption.
Who Delivers Electricity in San Marcos
Oncor (your delivery utility)
Oncor owns and maintains the poles, wires, transformers, and meters in San Marcos. They handle outages and infrastructure, but they do not sell electricity plans. You choose a retail provider separately, and Oncor delivers the power regardless of which provider you pick.
Oncor's delivery charges are the same for every customer in Hays County, regardless of retail provider. TrueBill includes these charges in every estimate.
Review Oncor TDSP delivery charges and service-area details →Typical Electricity Usage in San Marcos
San Marcos homes often use significantly more electricity during summer cooling months than during the rest of the year.
That seasonal swing changes plan economics: bill credits, minimum usage fees, and usage-based pricing can behave very differently as monthly usage moves up and down.
TrueBill ranks plans using your actual usage profile whenever possible instead of relying only on the standard 1,000 kWh benchmark.
Estimated profile derived from San Marcos seasonal ranges and Oncor service-area usage patterns.
Seasonal Usage & Weather in San Marcos
Monthly Usage Patterns
Student households in smaller apartments often use 400–700 kWh monthly, well below the 1,000 kWh benchmark most plans advertise against. Permanent residents in larger homes typically see 900–1,400 kWh in summer and 500–900 kWh in winter. The academic calendar also creates cyclical occupancy patterns that affect average monthly usage across the city.
How San Marcos's Weather Affects Your Bill
San Marcos sits in the San Marcos River valley, which provides some natural evening cooling that higher, drier locations don't experience. Daytime highs still routinely exceed 98°F in July and August, but proximity to the Spring Lake spring system keeps local humidity slightly elevated, requiring AC to manage both temperature and moisture throughout summer.
Top Electricity Plans in San Marcos (Ranked by Real Monthly Cost)
Plans below are ranked by estimated total bill including Oncor delivery charges. Enter your actual monthly kWh for personalized results and confirm final details with the provider.
| # | Plan | Provider | Rate (1,000 kWh) | Est. bill (1,000 kWh) | Term | Fine print |
|---|---|---|---|---|---|---|
| 1 | SimpleSaver 12 | AP GAS & ELECTRIC (TX) LLC | 7.1¢/kWh | $71/mo | 12 mo | Credit cliff at 1,000 kWh, $150 cancel fee |
| 2 | GridPlus 12 | CHARIOT ENERGY | 7.2¢/kWh | $72/mo | 12 mo | Credit cliff at 1,000 kWh, $15 cancel fee |
| 3 | Rhythm Max Saver 12 | RHYTHM | 7.7¢/kWh | $82/mo | 12 mo | Credit cliff at 1,000 kWh, $20 cancel fee |
| 4 | The Lone Saver Plus 12 | Energy Texas | 7.7¢/kWh | $82/mo | 12 mo | Credit cliff at 1,000 kWh, $20 cancel fee |
| 5 | Bill Credit Bundle 13 | Discount Power | 8.4¢/kWh | $84/mo | 13 mo | Credit cliff at 1,000 kWh, $150 cancel fee |
Estimated bills include Oncordelivery charges. Confirm final pricing on the provider's Electricity Facts Label before enrolling. Use the interactive comparison below to rank all 150 plans at your own usage, or the full comparison tool.
What to Check Before Picking a Plan in San Marcos
Some plans only apply a credit if you use, say, 1,000 kWh or more in a month. Miss the threshold and your bill can jump. Check where your usage lands in every month, not just summer.
Rates can change across usage bands, so the advertised rate may only apply at one usage level. Compare estimated cost at your expected usage, not just the 1,000 kWh benchmark.
A monthly base charge or a fee for using too little can outweigh a low per-kWh rate, especially in smaller homes and apartments.
Longer contracts lock in your rate but usually carry a cancellation fee. Check the term and the fee in the plan's EFL before you sign up.
TrueBill factors these plan structures into every estimate. Plan terms can change, so confirm details with the provider before enrolling.
Frequently Asked Questions About Electricity in San Marcos
What electricity plans are best for students in San Marcos?
Does Texas State University affect local electricity rates?
Are there no-deposit electricity plans available in San Marcos?
Can I switch electricity providers in San Marcos?
How do Oncor delivery charges affect my total San Marcos electricity bill?
What is the difference between the Oncor delivery charge and the energy charge on my San Marcos electricity bill?
San Marcos ZIP Codes
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Estimated costs are informational. Provider rates and plan terms may change. Confirm current details directly with the provider.