Atlantex Power
Luminous 12
Rate
13.50¢
Term
12 Months
$1000 kWh
$135
Rates as of July 2026 · verify on the EFL
- ✓ 35% green
Best for Reliability Atlantex Power in Round Rock
Atlantex Power in Round Rock.
Atlantex Power has 2 plans live on the Oncor grid serving Round Rock. Lowest rate 13.50¢/kWh — about 1.2¢ below the Round Rock average.
4.2 · Oncor grid · 130K residents · Williamson County
Atlantex Power in Round Rock
By the numbers.
Lowest here
13.50¢
Atlantex Power in Round Rock
Round Rock avg
14.72¢
across all providers
Atlantex Power plans
2
on Oncor
100% green
1
renewable plans
What you actually pay in Round Rock
Energy charge vs the wires.
Atlantex Power's cheapest plan in Round Rock is 13.5¢/kWh all-in. That number is two parts: Atlantex Power'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.
Atlantex Power energy
9.3¢
Oncor delivery
4.2¢
All-in
13.5¢
At a typical 1,000 kWh month, that's about $135 — including the ~$3.42 Oncor meter charge. Because delivery is fixed, the only lever between providers in Round Rock is the energy charge. Atlantex Power's best rate ranks #11 of 18 providers on the Oncor grid.
Top Atlantex Power picks for Round Rock
Best Atlantex Power plans here.
Atlantex Power
Luminous Green 12
Rate
13.90¢
Term
12 Months
$1000 kWh
$139
Rates as of July 2026 · verify on the EFL
- ✓ 100% green energy
Round Rock, Williamson County — population 130K, sample ZIP 78664. Served by Oncor (outage line: 1-888-313-4747).
Switching in Round Rock
Same wires — new bill from Atlantex Power.
Oncor owns the wires in Round Rock and processes the switch in 1-3 business days — no service interruption, no truck roll, no new equipment. Atlantex Power files the switch on your behalf. Same-day if you order before 4-5 PM Central.
Atlantex Power in Round Rock — FAQ
Common questions.
Does Atlantex Power serve Round Rock, TX?
Yes. Atlantex Power offers 2 plans in Round Rock on the Oncor grid, starting at 13.5¢/kWh all-in. Enrollment is online and service is delivered by Oncor.
What's the delivery charge in Round Rock?
Oncor charges about 4.2¢/kWh plus ~$3.42/month to deliver power in Round Rock. This is set by the PUCT and is identical on every plan — from Atlantex Power or any other provider — so the only number that actually differs between providers is the energy charge.
Where does Atlantex Power rank on price in Round Rock?
Atlantex Power's lowest Round Rock rate ranks #11 of 18 providers serving the Oncor grid. The cheapest plan overall in Round Rock is 7.1¢/kWh; Atlantex Power's best is 13.5¢/kWh.
How long does it take to switch to Atlantex Power in Round Rock?
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 Atlantex Power
Explore Atlantex Power.
Compare Atlantex Power plans in Round Rock
See how Atlantex Power's 2 plans stack up at your real Round Rock 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.