Free Nights & Weekends Electricity Plans in Texas: Do They Actually Save Money?
Free Nights and Free Weekends plans are Time-of-Use (TOU) contracts that charge 0¢/kWh for supply energy during off-peak hours (typically 8:00 PM or 9:00 PM to 6:00 AM), but charge 23¢ to 31¢/kWh for all daytime electricity. Unless you shift at least 48% to 55% of your total monthly usage into the free window (typically via scheduled overnight EV charging or home battery storage), a standard flat-rate plan is cheaper.
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1. The Break-Even Math: Free Nights Plan vs Standard Fixed-Rate Plan
On a typical Texas Free Nights EFL (assuming a 9:00 PM to 6:00 AM free window in Oncor territory), daytime hours account for 15 hours per day—including the hottest 2:00 PM to 7:00 PM summer air-conditioning peak:
| Household Usage Profile (1,500 kWh Total/Mo) | Night Share (9 PM–6 AM) | Free Nights Plan Bill (26¢ Day / 0¢ Night) | Standard Fixed Plan Bill (13.2¢ All Hours) | Monthly Winner |
|---|---|---|---|---|
| Typical Home (Daytime AC + Evening Cooking) | 30% Night / 70% Day | $277.06/mo (18.5¢ avg) | $198.00/mo (13.2¢ avg) | Standard Fixed saves $79/mo |
| Aggressive Load Shifter (Overnight Dishwasher/Laundry + Pre-Cooling) | 42% Night / 58% Day | $230.26/mo (15.4¢ avg) | $198.00/mo (13.2¢ avg) | Standard Fixed saves $32/mo |
| 2-EV Household Charging Strictly 10 PM–5 AM | 56% Night / 44% Day | $175.66/mo (11.7¢ avg) | $198.00/mo (13.2¢ avg) | Free Nights saves $22/mo |
2. Check Whether TDU Delivery Charges Are Also Free at Night
Always read the EFL carefully: some “Free Nights” plans waive both the REP energy charge and the TDU delivery charge during night hours, while others waive only the REP supply energy charge and still bill you 6.03¢ to 7.77¢/kWh for TDU delivery on every nighttime kilowatt-hour.
Frequently Asked Questions
Why does the EFL on a Free Nights plan assume 31% to 33% nighttime usage?
PUCT EFL disclosure rules require providers to calculate the 500, 1,000, and 2,000 kWh benchmark rates using a standardized ERCOT residential load profile, which assumes roughly 31% to 33% of electricity is consumed during overnight hours.
Who actually saves money on a Free Nights electricity plan?
Households with one or two electric vehicles that charge exclusively on a timer between 9:00 PM and 6:00 AM, or homes with whole-home battery storage systems programmed to charge overnight and discharge during afternoon AC hours.
Related Tools, Provider Profiles & Guides
- Compare Simple All-Hours Fixed Plans
- Calculate EV Charger & AC Monthly kWh
- TXU Energy Free Nights & Plan Analysis
- Reliant Truly Free Weekends & Plan Analysis
All rate examples and TDU delivery tariffs verified November 4, 2026 from official PUCT filings and Electricity Facts Labels.