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BKV Energy
AP Gas & Electric
BKV Energy
BKV Energy
| Provider | Plan | Rate (¢/kWh) | Term | Green % |
|---|---|---|---|---|
|
BKV Energy
|
Verbena 13 | 14.1¢ | 13 mo | 29% |
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BKV Energy
|
Verbena 12 | 14.5¢ | 12 mo | 29% |
|
AP Gas & Electric
|
APG&E Fixed 14 | 16.4¢ | 14 mo | — |
|
AP Gas & Electric
|
APG&E Fixed 12 | 16.4¢ | 12 mo | — |
Top 10 diverse plans · Max 2 per provider · View all plans
Your electricity in zip code 78665 is delivered by Oncor Electric Delivery. Since this area is deregulated, you can choose your retail electricity provider while Oncor Electric Delivery maintains the power lines and handles outage restoration.
Round Rock's 78665 zip code sits in Williamson County — one of the fastest-growing counties in Texas — and benefits from a fully deregulated electricity market served by Oncor Electric Delivery. With 49 retail electric providers (REPs) competing across 364 available plans as of March 2026, residents here have exceptional choice when it comes to their energy bills. The average household income of $82,842 reflects a community that values smart financial decisions, and shopping your electricity rate is one of the easiest ways to keep more money in your pocket. Whether you're a homeowner in a larger home or renting a newer apartment, the competition in this market means meaningful savings are available — if you know where to look.
The most competitive rate available in 78665 right now is 7.9¢/kWh, offered through the GridPlus 12 plan from Chariot Energy. That's notably below the average rate across all 364 available plans, which sits at 13.0¢/kWh — meaning savvy shoppers who take the time to compare can potentially cut their per-kWh cost nearly in half compared to a randomly selected plan. The full rate range across all plans spans from that 7.9¢ floor up through premium or specialty offerings, giving consumers a wide spectrum of options depending on their priorities. Pricing in this area is influenced by Oncor's regulated delivery charges, wholesale energy market conditions in ERCOT's South zone, and the intense provider competition that keeps retail margins lean.
Not all contract lengths are priced equally in 78665. Short-term plans (1–6 months) currently average 11.1¢/kWh — the most competitive average tier available and a smart pick for renters, newcomers to Round Rock, or anyone expecting a lifestyle change in the near future. Medium-term plans (7–18 months) average 13.0¢/kWh, offering price stability for a moderate commitment. Long-term plans (19+ months) average 13.7¢/kWh, which is the highest average tier — though some individual long-term plans may still offer competitive rates worth locking in for budget predictability. For most 78665 residents, a 12-month fixed-rate plan in the short-to-medium range offers the best balance of price and stability heading into Texas's high-demand summer months.
With 49 providers actively competing in the Oncor service area, 78665 is one of the most competitive electricity markets in Texas. Providers like Chariot Energy, Reliant Energy, TXU, Direct Energy, and Rhythm Energy all compete alongside newer entrants like Good Charlie, 4Change Energy, Freepoint Energy, and Frontier Utilities. This level of competition regularly drives promotional offers, bill credits, and free nights or weekends plans — particularly during spring enrollment season. Of the 364 total plans, 290 are fixed-rate and 82 are green or renewable energy plans, giving environmentally conscious Round Rock residents strong green options without sacrificing price competitiveness.
Regardless of which retail provider you choose, your electricity in 78665 is physically delivered by Oncor Electric Delivery — and that will never change when you switch providers. Oncor's delivery charges are regulated by the Public Utility Commission of Texas (PUC) and are identical for every customer in the service area, no matter which REP you select. This means switching providers has zero impact on reliability or service quality. For outages or line issues, you'll always contact Oncor directly at 1-888-313-4747 or visit oncor.com. Switching itself is free, causes no service interruption, and typically takes effect on your next scheduled meter read date.
Round Rock's 78665 zip code is surrounded by neighboring Round Rock zips — 78664, 78680, 78681, and 78682 — all served by the same Oncor infrastructure and facing similar market conditions. Compared to other Oncor-territory cities like Balch Springs, Argyle, and Archer City (all averaging 9.9¢/kWh with 27 providers), 78665 residents benefit from a significantly deeper provider pool. Spring is historically an ideal time to lock in rates before summer heat drives up ERCOT wholesale prices — making March 2026 a particularly good moment to compare and enroll.
Starting at 14.1¢/kWh
2 plans available
Starting at 16.4¢/kWh
2 plans available
Lock in a fixed-rate plan before Memorial Day weekend. Round Rock's July and August heat routinely pushes AC systems into overdrive, and variable-rate plans can see sharp price increases during peak ERCOT demand periods — a fixed rate gives you a predictable bill all summer.
Set your thermostat to 78°F when home and 85°F when away during summer. With highs regularly hitting 98–105°F in Round Rock from June through September, each degree of setpoint adjustment can reduce your cooling costs by approximately 3% per month.
Audit your plan at least once a year — ideally every October. Contract terms that were competitive 12 months ago may no longer reflect the best available rates. Use Choice Energy Network to compare current Round Rock offers before your contract auto-renews.
If you work from home or have a Kalahari water park-level household with kids home all day, investigate free nights or time-of-use plans. Shifting dishwasher, laundry, and EV charging to off-peak hours can meaningfully cut your monthly Oncor delivery and energy charges.
After Winter Storm Uri, consider adding a whole-home surge protector and reviewing whether your REP plan includes any bill assistance or payment protection features. Several Round Rock-area REPs offer Winter Suspension protection that limits disconnect risk during declared weather emergencies.
As of March 2026, the most competitive rate in 78665 is 7.9¢/kWh through the GridPlus 12 plan from Chariot Energy. This is a fixed-rate plan in the Oncor service area. Always compare plans at your specific usage level, as rates can vary by monthly kWh consumption.
49 retail electric providers (REPs) currently serve 78665, offering a total of 364 plans. This is a highly competitive market. Providers include Reliant Energy, TXU, Direct Energy, Chariot Energy, Rhythm Energy, Good Charlie, 4Change Energy, and many others.
Oncor Electric Delivery is a regulated utility — its wire and pole charges are set by the Public Utility Commission of Texas and apply equally to all customers in the service area. Switching your retail provider only changes the energy supply portion of your bill, not delivery.
Short-term plans (1–6 months) currently average 11.1¢/kWh — the lowest average tier in 78665. For most residents, a 12-month fixed plan in this range offers the best combination of competitive pricing and protection against summer rate spikes in ERCOT.
Yes. Switching retail electric providers in Round Rock's 78665 zip code is completely free and causes zero service interruption. Oncor continues delivering power throughout the transition. Your new rate takes effect on your next meter read date after enrollment.
Yes — 82 of the 364 available plans in 78665 are green or renewable energy plans. Multiple providers including Chariot Energy and 4Change Energy specialize in clean energy offerings, often at rates competitive with conventional plans in this high-competition Oncor market.