Green Mountain
Pollution Free Conserve 12 Preferred
Rate
17.90¢
Term
12 Months
$1000 kWh
$179
Rates as of July 2026 · verify on the EFL
- ✓ 100% green energy
Best for Green Energy Green Mountain in Rancho Viejo
Green Mountain in Rancho Viejo.
Green Mountain has 5 plans live on the Oncor grid serving Rancho Viejo. Lowest rate 17.90¢/kWh.
4.3 · Oncor grid · Cameron County
Green Mountain in Rancho Viejo
By the numbers.
Lowest here
17.90¢
Green Mountain in Rancho Viejo
Rancho Viejo avg
14.72¢
across all providers
Green Mountain plans
5
on Oncor
100% green
5
renewable plans
What you actually pay in Rancho Viejo
Energy charge vs the wires.
Green Mountain's cheapest plan in Rancho Viejo is 17.9¢/kWh all-in. That number is two parts: Green Mountain'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.
Green Mountain energy
13.7¢
Oncor delivery
4.2¢
All-in
17.9¢
At a typical 1,000 kWh month, that's about $179 — including the ~$3.42 Oncor meter charge. Because delivery is fixed, the only lever between providers in Rancho Viejo is the energy charge. Green Mountain's best rate ranks #17 of 18 providers on the Oncor grid.
Top Green Mountain picks for Rancho Viejo
Best Green Mountain plans here.
Green Mountain
Pollution Free Conserve 24 Preferred
Rate
17.90¢
Term
24 Months
$1000 kWh
$179
Rates as of July 2026 · verify on the EFL
- ✓ 100% green energy
Green Mountain
Pollution Free e-Plus 24 Preferred
Rate
18.20¢
Term
24 Months
$1000 kWh
$182
Rates as of July 2026 · verify on the EFL
- ✓ 100% green energy
- ✓ 24 month
- ✓ Low fixed price
Every Green Mountain plan on Oncor
All 5 Green Mountain plans in Rancho Viejo.
| # | Plan | Rate | |
|---|---|---|---|
| 1 | Pollution Free Conserve 12 Preferred | 17.90¢ | View → |
| 2 | Pollution Free Conserve 24 Preferred | 17.90¢ | View → |
| 3 | Pollution Free e-Plus 24 Preferred | 18.20¢ | View → |
| 4 | Pollution Free e-Plus 12 Preferred | 18.20¢ | View → |
| 5 | Pollution Free Green Savings Plus 24 Preferred | 22.70¢ | View → |
Rancho Viejo, Cameron County, sample ZIP 78575. Served by Oncor (outage line: 1-888-313-4747).
Switching in Rancho Viejo
Same wires — new bill from Green Mountain.
Oncor owns the wires in Rancho Viejo and processes the switch in 1-3 business days — no service interruption, no truck roll, no new equipment. Green Mountain files the switch on your behalf. Same-day if you order before 4-5 PM Central.
Green Mountain in Rancho Viejo — FAQ
Common questions.
Does Green Mountain serve Rancho Viejo, TX?
Yes. Green Mountain offers 5 plans in Rancho Viejo on the Oncor grid, starting at 17.9¢/kWh all-in. Enrollment is online and service is delivered by Oncor.
What's the delivery charge in Rancho Viejo?
Oncor charges about 4.2¢/kWh plus ~$3.42/month to deliver power in Rancho Viejo. This is set by the PUCT and is identical on every plan — from Green Mountain or any other provider — so the only number that actually differs between providers is the energy charge.
Where does Green Mountain rank on price in Rancho Viejo?
Green Mountain's lowest Rancho Viejo rate ranks #17 of 18 providers serving the Oncor grid. The cheapest plan overall in Rancho Viejo is 7.1¢/kWh; Green Mountain's best is 17.9¢/kWh.
How long does it take to switch to Green Mountain in Rancho Viejo?
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 Green Mountain
Explore Green Mountain.
Compare Green Mountain plans in Rancho Viejo
See how Green Mountain's 5 plans stack up at your real Rancho Viejo 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.