Best Electricity Plans for EV Owners

Adding an EV to a Texas household adds 250-400 kWh/month to your electricity bill for a typical 12,000-mile-a-year driver. That's $30-$60/month at standard residential rates.

Free-nights plans, EV-specific plans, and time-of-use plans can cut that cost meaningfully — but only if your household actually charges overnight. For households that plug in when they get home from work and run the AC during the day, those plans cost more than a standard fixed-rate plan, not less.

Here's the math, and how to tell which side of it you're on.

How much an EV actually adds

The math is simple. A typical EV uses about 0.30 kWh per mile driven. A 12,000-mile-a-year driver burns 3,600 kWh of electricity through the car alone. That's 300 kWh/month average.

Two-EV households roughly double that — 500-700 kWh/month for two daily-driven cars.

For context: an average Texas household uses 1,200 kWh/month total. A single EV adds 25% to the monthly bill. Two EVs add 40-50%. The EV-related portion can be more than the entire bill of a no-EV apartment.

On a standard 10¢/kWh fixed-rate plan, that's $30/month for one EV, $50-70/month for two. Annual cost: $360 for one EV, $600-840 for two.

That's the baseline. The question is whether a specialty plan beats it.

Free-nights plans: who actually wins

Free-nights plans (TXU Free Nights, Reliant Truly Free Nights, several others) give you zero-cost electricity during a specified window — typically 8 PM to 6 AM, sometimes 9 PM to 7 AM, varies by REP.

In exchange, the daytime rate is significantly higher — typically 13-17¢/kWh during the "expensive" hours (6 AM to 8 PM in most plans). Standard fixed-rate plans run 10-12¢/kWh at the same usage; free-nights daytime rates run 3-5¢ higher.

The math works for households that can shift at least 50-60% of their monthly usage into the free window. For EV owners specifically:

Scenario A: Single-EV household, no other off-peak shifting. Charge the EV overnight (8 PM - 6 AM). EV usage: 300 kWh, all free. Non-EV usage: 1,200 kWh, all at daytime rate of 15¢/kWh = $180. Total: $180 + $0 = $180/month.

Same household on a 10¢/kWh flat-rate plan: 1,500 kWh × 10¢ = $150/month. Flat plan wins by $30/month.

Scenario B: Single-EV household, can shift laundry/dishwasher/dryer to nights. Charge EV overnight (300 kWh free). Run laundry/dishwasher at night (150 kWh free). Cook/AC during day (1,050 kWh × 15¢ = $158). Total: $158/month.

Same household on flat-rate: 1,500 × 10¢ = $150. Flat plan still wins by $8/month.

Scenario C: Two-EV household, both charge overnight, plus all big appliances at night. EVs (600 kWh free). Big appliances (200 kWh free). Daytime (900 kWh × 15¢ = $135). Total: $135/month.

Same household on flat-rate: 1,700 × 10¢ = $170. Free-nights wins by $35/month.

The pattern: free-nights wins decisively only when you can shift 50%+ of your total usage to off-peak. A single EV alone usually isn't enough to flip the math.

The AC trap

Texas summers are the dominant cost driver in residential electricity. From May to September, AC runs 12-16 hours a day. Most of that runtime is during the daytime/early-evening window — the expensive hours on a free-nights plan.

A typical Texas July sees AC consume 1,000-1,500 kWh by itself. On a free-nights plan at 15¢/kWh daytime, that's $150-$225 in AC charges alone — before EV, before lighting, before anything else.

Free-nights plans get worse the deeper into summer you go. The savings you bank in March (free EV charging) get eaten by August (expensive AC).

The cleanest test: pull your smart-meter hourly data from SmartMeterTexas.com. Add up your usage in the 8 PM - 6 AM window across a full year. If that's more than 55% of your total usage, free-nights wins. Below 50%, flat-rate wins.

EV-specific plans: a narrower play

A few REPs offer plans specifically for EV households. They typically:

• Charge a normal daytime rate (10-11¢/kWh, same as fixed-rate)
• Offer a discounted EV-charging rate during overnight hours (4-6¢/kWh)
• Require a smart charger or compatible EV that reports to the REP

These plans avoid the AC trap. The daytime rate is normal, so summer cooling doesn't punish you. The EV gets a real discount in the overnight window.

For a single-EV household using 300 kWh/month for charging:

• Charging cost on flat 10¢ plan: $30
• Charging cost on EV plan at 5¢ overnight rate: $15

Savings: $15/month, or $180/year, for the EV portion. The household's non-EV usage cost is the same.

EV-specific plans are the cleanest fit for households with a single EV that charges nightly. Free-nights plans only win for households doing aggressive time-shifting across all loads.

Time-of-use plans: rarely the right answer

Some Texas plans offer pure time-of-use (TOU) pricing — different rates for peak hours (typically 2 PM - 7 PM), shoulder hours, and off-peak. No "free" window; just different prices by time of day.

TOU plans theoretically reward households that can flatten their usage during peak. In practice, the Texas peak window is also the hottest part of the day. Avoiding AC use from 2 PM to 7 PM means letting the house heat to 85°F in summer.

TOU works for:

• Households with battery storage (charge the battery during off-peak, run AC from the battery during peak)
• Households with rooftop solar (solar production peaks during the same window TOU charges most for)
• Aggressive automated load shifting

For most EV households without those investments, TOU is harder to optimize than free-nights and usually delivers worse outcomes.

Level 1 vs. Level 2 charging

A small but real factor: how you charge.

Level 1 charging is a standard 120V outlet. ~3-5 miles of range per hour of charging. For a 30-mile-day commuter, 6-10 hours of overnight Level 1 charging is enough.

Level 2 charging is a 240V circuit (same as an electric dryer). ~25-30 miles of range per hour. Most overnight charging needs are done in 4-6 hours.

For free-nights or EV-plan optimization, Level 2 is strongly preferred. You want all your EV charging to fit cleanly inside the off-peak window. Level 1 can stretch into the early-morning peak window in some plans, eroding the savings.

The home installation cost for Level 2 is typically $500-$1,500 (electrician + the charger unit). For a household that drives more than 5,000 miles/year on the EV, payback is 2-3 years on charging-cost savings alone.

When EV plans don't help

A few cases where the specialty plan loses:

You drive less than 6,000 miles/year on the EV. The annual EV electricity is small enough that the percentage savings from a specialty plan don't outweigh the higher daytime rate (free-nights plans) or the absence of broader benefits.

You can't shift charging to overnight. Apartments without dedicated parking, condo lots without EV chargers, public-charging-dependent households — none of these benefit from overnight specialty plans because the EV isn't plugged in at home at all.

Your household runs AC heavily during the day. Work-from-home households, families with kids home all summer, the AC trap kicks in hard. Free-nights plans get expensive fast.

You already have rooftop solar. Solar production peaks during the same daytime window that TOU and free-nights plans charge most for. The solar covers the expensive hours; you don't need a plan that discounts the cheap hours.

Smart-charger settings that matter

If you're going to use a free-nights or EV plan, dial the EV's charging schedule in:

• Set the start time at the plan's off-peak window. Most EVs let you set a "depart by" time, not a "start charging at" time. Use the start-time setting (sometimes in the wall-charger app instead of the car) to make sure charging begins at 8 PM (or whenever the window opens), not the moment you plug in.
• Set the end time inside the off-peak window. If charging extends past 6 AM, you're paying the daytime rate on the tail.
• Disable preconditioning during peak hours. Some EVs precondition the battery before scheduled departure. If that triggers at 5 AM and the off-peak window ends at 6 AM, you're fine. If it triggers at 4:30 AM on a long-trip morning, you might miss the cutoff.

A misconfigured smart charger can eliminate the entire benefit of an EV plan. Worth the 10 minutes to set it correctly.

The honest close

EV ownership is a real shift in residential electricity demand. Specialty plans can compress the cost — but only when the household pattern actually fits the plan structure.

For single-EV households charging overnight on Level 2: EV-specific plans are the cleanest win. ~$15-30/month in savings on EV charging.

For two-EV households doing aggressive time-shifting across all loads: free-nights plans win meaningfully. $30-60/month savings possible.

For single-EV households without time-shifting or with heavy daytime AC use: flat-rate fixed-price plans win. The EV adds cost but doesn't justify the daytime rate premium of free-nights.

The math is specific to your household, not generic to "EV owners." Pull your hourly data, run both scenarios, pick the structure that fits.

» MORE: Best plans for large homes · Fixed vs. variable rate plans