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.
Live eligible-plan inventory — Oncor territory; the same active, validation-clean, fresh plan set the compare tool ranks, with TDSP delivery charges included. Rate and bill figures cover standard-priced plans only (free-period and time-of-use plans are counted in inventory but excluded from rate figures). Source: daily EFL capture of the state plan feed; refreshed with this page about every 6 hours. Confirm current rates with the provider before enrolling.
Address eligibility note
Addresses within San Marcos are served by the city-owned San Marcos Electric Utility, the Pedernales Electric Cooperative, or the Bluebonnet Electric Cooperative — none of which offers retail choice. Retail plan comparison applies only to addresses in the surrounding area that fall in deregulated territory. Confirm your address before comparing plans.
Retail choice may not apply to all addresses. Use your ZIP in compare flow to confirm eligibility and available offers.
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 | 6.2¢/kWh | $62/mo | 12 mo | Credit cliff at 1,000 kWh, $150 cancel fee |
| 2 | Sure Saver 12 | SPARK ENERGY LLC | 6.4¢/kWh | $64/mo | 12 mo | Credit cliff at 1,000 kWh, $100 cancel fee |
| 3 | The Lone Saver Plus 12 | Energy Texas | 6.8¢/kWh | $68/mo | 12 mo | Credit cliff at 1,000 kWh, $20 cancel fee |
| 4 | Rhythm Max Saver 24 | RHYTHM | 7.3¢/kWh | $73/mo | 24 mo | Credit cliff at 1,000 kWh, $20 cancel fee |
| 5 | Variable Advantage | SOUTHERN FEDERAL POWER LLC | 8.9¢/kWh | $89/mo | 1 mo | Variable rate |
Estimated bills include Oncor delivery charges. Confirm final pricing on the provider's Electricity Facts Label before enrolling. Use the interactive comparison below to rank all 165 plans at your own usage, or the full comparison tool.
San Marcos electricity starts with a fact that surprises most arriving Texas State students: the city itself lists three electric providers within its limits — the city-owned San Marcos Electric Utility, the Pedernales Electric Cooperative, and the Bluebonnet Electric Cooperative — and none of them offers retail choice. Whether you can shop for a plan at all depends on your address, with deregulated territory limited to parts of the surrounding area. Where choice does apply, the market skews small: apartments housing one or two students often use 500–800 kWh monthly, well below the 1,000 kWh benchmark most advertised rates assume.
For choice-eligible addresses in the San Marcos area, plans should be judged at 500–700 kWh rather than 1,000 kWh; many advertised 'low rates' assume usage thresholds that student rentals never hit.
San Marcos Electricity Rates — August 2026
Weekly standard-priced market index — Oncor territory, snapshot from the week of August 31, 2026. Unlike the live inventory above, rate figures here exclude free-period and time-of-use plans.
In the week of August 31, 2026, 164 standard-priced plans from 41 providers were on the market in Oncor territory. At 1,000 kWh, the cheapest works out to 6.6¢/kWh all-in (about $66 for the month), and the territory average is 13.2¢/kWh — down 0.8¢ vs the week of August 3, 2026. All figures include Oncor delivery charges.
| Monthly usage | Cheapest rate | Average rate | Cheapest est. bill | Average est. bill |
|---|---|---|---|---|
| 500 kWh | 9.5¢/kWh | 14.0¢/kWh | $47/mo | $70/mo |
| 1,000 kWh | 6.6¢/kWh | 13.2¢/kWh | $66/mo | $132/mo |
| 2,000 kWh | 8.5¢/kWh | 13.1¢/kWh | $170/mo | $262/mo |
Standard-priced plans in the Oncor service territory tracked in the TrueBill database, weekly snapshot from August 31, 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 August 31, 2026.
| Provider | Plans | Lowest rate | Avg rate |
|---|---|---|---|
| AP GAS & ELECTRIC (TX) LLC | 7 | 6.59¢ | 11.18¢ |
| SPARK ENERGY LLC | 5 | 6.92¢ | 10.62¢ |
| SOUTHERN FEDERAL POWER LLC | 5 | 8.90¢ | 14.37¢ |
| Octopus Energy | 6 | 9.06¢ | 10.89¢ |
| TARA ENERGY | 5 | 10.23¢ | 13.09¢ |
| AMIGO ENERGY | 5 | 10.23¢ | 16.25¢ |
| JUST ENERGY | 4 | 10.23¢ | 13.83¢ |
| Companion Energy | 2 | 10.60¢ | 11.10¢ |
| Rhythm Energy | 4 | 10.64¢ | 11.74¢ |
| Energy Texas | 4 | 10.64¢ | 12.09¢ |
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
Most San Marcos addresses can't shop — here's how to tell if yours can
The City of San Marcos lists three electric providers within its limits: its own San Marcos Electric Utility, plus the Pedernales and Bluebonnet electric cooperatives. All three serve their customers directly — municipally governed rates for the city utility, member rates for the co-ops — and none participates in the retail-choice market, so comparison shopping doesn't apply at those addresses.
Deregulated territory exists in parts of the surrounding area toward Kyle and the I-35 corridor, where addresses on deregulated wires shop the standard Texas retail market.
Your electric bill names your utility, and an address-level check settles a new rental before you sign anything. Treat any site quoting retail plans for a campus-area address without that check with skepticism.
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.
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?
San Marcos ZIP Codes
Keep Comparing
Estimated costs are informational. Provider rates and plan terms may change. Confirm current details directly with the provider.