Frontier Utilities
Saver Plus 12
Rate
7.60¢
Term
12 Months
$1000 kWh
$76
Rates as of July 2026 · verify on the EFL
- ✓ 30% green
- ✓ $125 bill credit when your usage is at least 1000kWh
- ✓ 60 Day Happiness Guarantee
Best for Low Rates Frontier Utilities in Marathon
Frontier Utilities in Marathon.
Frontier Utilities has 6 plans live on the Oncor grid serving Marathon. Lowest rate 7.60¢/kWh — about 7.1¢ below the Marathon average.
4.3 · Oncor grid · Brewster County
Frontier Utilities in Marathon
By the numbers.
Lowest here
7.60¢
Frontier Utilities in Marathon
Marathon avg
14.72¢
across all providers
Frontier Utilities plans
6
on Oncor
100% green
0
renewable plans
What you actually pay in Marathon
Energy charge vs the wires.
Frontier Utilities's cheapest plan in Marathon is 7.6¢/kWh all-in. That number is two parts: Frontier Utilities's energy charge, plus the Oncor delivery charge — the cost of the poles and wires, set by the PUCT and identical on every plan from every provider on this grid.
Frontier Utilities energy
3.4¢
Oncor delivery
4.2¢
All-in
7.6¢
At a typical 1,000 kWh month, that's about $76 — including the ~$3.42 Oncor meter charge. Because delivery is fixed, the only lever between providers in Marathon is the energy charge. Frontier Utilities's best rate ranks #6 of 18 providers on the Oncor grid.
Top Frontier Utilities picks for Marathon
Best Frontier Utilities plans here.
Frontier Utilities
Saver Value Plus 12
Rate
14.40¢
Term
12 Months
$1000 kWh
$144
Rates as of July 2026 · verify on the EFL
- ✓ 30% green
Frontier Utilities
Light Saver 12
Rate
15.90¢
Term
12 Months
$1000 kWh
$159
Rates as of July 2026 · verify on the EFL
- ✓ 30% green
- ✓ No gimmicks, no bill credits, fixed rate pricing
- ✓ 60 Day Happiness Guarantee
Every Frontier Utilities plan on Oncor
All 6 Frontier Utilities plans in Marathon.
| # | Plan | Rate | |
|---|---|---|---|
| 1 | Saver Plus 12 | 7.60¢ | View → |
| 2 | Saver Value Plus 12 | 14.40¢ | View → |
| 3 | Light Saver 12 | 15.90¢ | View → |
| 4 | Saver Value 12 | 18.00¢ | View → |
| 5 | Saver Deluxe 12 | 18.20¢ | View → |
| 6 | Saver Premier 12 | 18.60¢ | View → |
Marathon, Brewster County, sample ZIP 79842. Served by Oncor (outage line: 1-888-313-4747).
Switching in Marathon
Same wires — new bill from Frontier Utilities.
Oncor owns the wires in Marathon and processes the switch in 1-3 business days — no service interruption, no truck roll, no new equipment. Frontier Utilities files the switch on your behalf. Same-day if you order before 4-5 PM Central.
Frontier Utilities in Marathon — FAQ
Common questions.
Does Frontier Utilities serve Marathon, TX?
Yes. Frontier Utilities offers 6 plans in Marathon on the Oncor grid, starting at 7.6¢/kWh all-in. Enrollment is online and service is delivered by Oncor.
What's the delivery charge in Marathon?
Oncor charges about 4.2¢/kWh plus ~$3.42/month to deliver power in Marathon. This is set by the PUCT and is identical on every plan — from Frontier Utilities or any other provider — so the only number that actually differs between providers is the energy charge.
Where does Frontier Utilities rank on price in Marathon?
Frontier Utilities's lowest Marathon rate ranks #6 of 18 providers serving the Oncor grid. The cheapest plan overall in Marathon is 7.1¢/kWh; Frontier Utilities's best is 7.6¢/kWh.
How long does it take to switch to Frontier Utilities in Marathon?
1 to 3 business days. Oncor keeps delivering power the whole time — no interruption, no new meter, no truck roll. Order before roughly 4–5 PM Central on a weekday and same-day switching is usually available.
More on Frontier Utilities
Explore Frontier Utilities.
Compare Frontier Utilities plans in Marathon
See how Frontier Utilities's 6 plans stack up at your real Marathon usage.
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How enrollment works
You pick the plan here. Enrollment finishes on our secure checkout — same rate, no markup. If you'd rather skip the ZIP entry, Live Link pulls your real usage from Smart Meter Texas in about 30 seconds. Same plans, same checkout, less typing.