The right electricity plan can cut your home EV charging cost in Texas by 50 percent or more compared to a standard flat-rate plan. That claim is not marketing language. It follows from the shape of ERCOT wholesale prices, where the overnight hours between 9 p.m. and 6 a.m. are generally among the cheapest of the day. Note that the expensive window has moved: market analyses of ERCOT pricing found that prices peaked around 4 p.m. in 2022, shifted to early evening in 2023, and by 2024 were peaking almost exclusively during the evening net-peak hours as solar output falls off, with a second morning peak during winter cold snaps. The size of the overnight discount varies by season and by day. For a household driving 15,000 miles per year in an EV averaging 3.5 miles per kWh, the difference between charging at peak rates versus off-peak rates can exceed $400 annually.
This article compares the three plan structures available to Texas EV owners, shows real current rates, and explains which type of household benefits from each one.
How Much Does It Cost to Charge an EV at Home in Texas?
The U.S. Energy Information Administration (EIA) put the average Texas residential electricity price at 14.94 cents per kWh for 2024, against average residential consumption of 1,096 kWh per month. At that rate, charging a 75 kWh battery from near-empty to full costs about $11.21. For a driver covering 15,000 miles per year in a vehicle rated at 3.5 miles per kWh, annual home charging consumption comes to roughly 4,285 kWh, costing approximately $640 at the average rate.
Shift that same consumption to a free nights window, and the energy charge for the charging portion drops to zero, though many free nights plans still bill TDU delivery charges of roughly 5 to 7 cents per kWh on those overnight kWh. TXU's free nights credit, for example, applies to energy charges only, with delivery passed through on every kWh including the free window, while Reliant advertises no energy charge and no delivery fee during the free window on its Free Overnight and Truly Free Nights plans, so check the EFL for how delivery is treated. Shift it to a time-of-use off-peak rate of 7 cents per kWh, and the annual cost falls to about $300. The math makes plan selection one of the highest-impact financial decisions an EV owner can make.
Plan Type 1: Free Nights Plans
Free nights plans offer $0 per kWh energy charges during a defined overnight window, typically 8 p.m. to 6 a.m. or 9 p.m. to 6 a.m. Outside that window, rates are higher than standard market rates, usually in the range of 18 to 27 cents per kWh in 2026 market surveys of Texas free-nights offers, and higher on some individual EFLs, which is how providers offset the free period.
Who this works for: Households where the majority of electricity use, not just EV charging, can shift to overnight hours. A household that runs the dishwasher, laundry, and charges the car overnight can see a genuinely lower bill. A household with high daytime consumption, such as someone working from home with air conditioning running all afternoon, will often pay more on a free nights plan than on a standard rate.
Current examples in Texas (as of mid-2026):
- Reliant Energy's Free Overnight 12 plan has a free window from 9 p.m. to 6 a.m., and Reliant states there is no energy charge and no delivery fee during that window. Its Oncor Electric Delivery EFL dated June 1, 2026 shows an average price of about 17.8 cents per kWh at 1,000 kWh of monthly usage; that is the all-in average, not the daytime rate, which the same EFL sets at roughly 19.4 cents per kWh for energy before Oncor's delivery charges.
- Green Mountain Energy has offered similar structures. Rates vary by zip code and should be verified on PowerToChoose.org, the official PUCT-administered comparison site.
- TXU Energy has offered EV-specific free nights variants in select service areas.
Always check the Electricity Facts Label (EFL) before enrolling. The EFL is a standardized document required by the Public Utility Commission of Texas (PUCT) and lists the exact rate at each usage tier.
The key risk: If a household cannot reliably shift 60 percent or more of its total consumption to the free window, the elevated daytime rate will erase the savings from free nights. Run the numbers using 12 months of your actual usage data before switching.
Plan Type 2: Time-of-Use Plans
Time-of-use (TOU) plans charge different rates depending on the time of day, typically structured as off-peak, mid-peak, and on-peak periods. Unlike free nights plans, off-peak hours are not free, but the rates are meaningfully lower than peak rates.
A representative Texas TOU structure might look like this:
- Off-peak (9 p.m. to 6 a.m., weekends): 7 to 9 cents per kWh
- Standard (6 a.m. to 3 p.m.): 12 to 14 cents per kWh
- On-peak (3 p.m. to 9 p.m., weekdays): 18 to 24 cents per kWh
For an EV owner who charges overnight and avoids plugging in during the evening on-peak window, a TOU plan can deliver off-peak charging costs well below the state average while keeping daytime household rates closer to normal.
Who this works for: Households with moderate daytime consumption and reliable overnight charging habits. A TOU plan is more forgiving than a free nights plan because the daytime penalty is smaller relative to the off-peak savings.
Current examples: Gexa Energy and Constellation have both offered TOU structures in Texas. 4Change Energy and MP2 Energy have also carried variants. Availability is zip-code dependent. The PUCT's PowerToChoose.org allows filtering by plan type and is the most reliable starting point for comparison.
Plan Type 3: Flat-Rate Plans With EV Bill Credits
Some providers offer standard fixed-rate plans with an add-on EV charging credit or a monthly bill credit tied to owning an electric vehicle. These are less common than free nights or TOU plans but worth examining.
The credit structures vary widely. Some providers offer $20 to $30 per month in bill credits for verified EV ownership. Others offer a discounted rate on a second meter dedicated to an EV charger, though whole-home second meters are uncommon in residential settings.
Who this works for: Households with unpredictable schedules who cannot reliably shift consumption to overnight hours. A flat-rate plan with a modest credit provides a small benefit without the risk of paying elevated rates during unavoidable daytime usage.
The trade-off is that the savings ceiling is lower. A $25 monthly credit saves $300 per year at most, compared to roughly $350 to $450 in savings on the charging load itself from a well-executed free nights or TOU strategy, and even that shrinks to the extent the plan's higher daytime rate applies to the rest of the household's usage.
How to Compare Plans Before Switching
The PUCT requires all licensed retail electricity providers in Texas to publish a standardized EFL for every plan, and certified providers are eligible to post their offers on PowerToChoose.org. The following steps produce an accurate comparison:
- Pull 12 months of usage data from your current provider or from SmartMeterTexas.com, which stores interval-level consumption data for advanced meters in Texas's deregulated service territories.
- Identify what percentage of your household's consumption occurs between 9 p.m. and 6 a.m. For most households with an EV, this figure rises significantly after the vehicle arrives.
- On PowerToChoose.org, filter for your zip code and sort by plan type. Read the EFL for each candidate plan, paying attention to the usage-tier pricing at 500 kWh, 1,000 kWh, and 2,000 kWh.
- Calculate your estimated annual cost under each plan using your actual monthly consumption profile, not the headline rate advertised.
- Check the contract term. Many specialty plans carry 12-month terms with early termination fees ranging from $150 to $200. Factor that into the decision if you move frequently.
When Not to Switch
Switching to a free nights or TOU plan is the wrong move for some households. If more than 40 percent of consumption occurs between 3 p.m. and 9 p.m. on weekdays, most free nights and TOU plans will produce a higher bill than a competitive flat-rate plan. Households with medical equipment that runs continuously, those with home offices under heavy air conditioning load during peak hours, or those with irregular schedules that prevent consistent overnight charging should compare carefully before committing.
A straightforward fixed-rate plan at 11 to 13 cents per kWh from a provider with a strong customer service record may outperform a specialty plan when the full consumption profile is accounted for.
The Bottom Line
For Texas EV owners who can consistently charge between 9 p.m. and 6 a.m., a free nights or time-of-use plan is the strongest cost-reduction tool available. The savings are real, they are documented in ERCOT price data, and they compound year over year as EV driving increases. The decision requires honest accounting of household consumption patterns, not just the charging load. Use PowerToChoose.org and SmartMeterTexas.com as the primary research tools, read the EFL for every plan under consideration, and run the numbers against 12 months of actual usage before enrolling.