Free Nights & Weekends Electricity Plans: The Math Nobody Shows You
"Free nights." "Free weekends." These are the most heavily advertised electricity plans in Texas, and the pitch is irresistible: a third of your hours, costing nothing. The plans are real, the free hours are real — and yet for most households they cost more than a boring fixed-rate plan. The reason is arithmetic the commercials never show.
Where the "free" comes from
These are time-of-use plans: your smart meter records when you use electricity, hour by hour. Usage during the free window (say, 9pm–6am, or all weekend) is billed at zero. Everything else is billed at the plan's standard rate — and that rate is set well above the market. That's the trade: providers give away the hours when wholesale power is cheap and demand is low, and charge a premium for the hours when you actually live your life.
The arithmetic with real shapes
A typical household puts roughly 30–40% of its usage into a 9pm–6am window — the fridge hums, the A/C cycles, not much else. Say a comparable fixed plan costs 13¢ and a free-nights plan charges 19¢ for daytime with nights free. At 1,000 kWh with 35% at night:
- Fixed plan: 1,000 × 13¢ = $130
- Free-nights plan: 650 daytime kWh × 19¢ = $123.50, plus delivery charges on all 1,000 kWh either way
Nearly a wash — and that's with a generous 35% night share. At 30% you're behind. The plans are engineered so that an average household roughly breaks even or loses slightly; the advertising does the rest. And note what the "free" window carefully excludes: the brutal 3pm–8pm summer stretch when your A/C works hardest is always billed, at the premium rate.
Who actually comes out ahead
- EV owners charging overnight — the clear winner. An EV can add 300–400 kWh/month, and if all of it lands in the free window, the math flips decisively. Free-nights plans are, functionally, EV plans.
- Night-shift workers whose entire home life happens in the free window.
- Disciplined load-shifters who genuinely run the pool pump, laundry, dishwasher, and pre-cooling overnight, every night. Most people do this for two weeks and drift back.
If you're not on that list, a straightforward fixed plan almost certainly beats the "free" one at your usage.
How to check a specific plan honestly
Every time-of-use plan still publishes an Electricity Facts Label with average prices at 500/1,000/2,000 kWh — but read the fine print: those averages assume a particular usage pattern that may not match yours. Two better checks: first, compare the plan's daytime rate against the best fixed rate on the market (the gap is what your free hours must overcome). Second, if your provider's app shows hourly usage, add up a real month of your own night-window kWh and run the numbers above with your actual percentage — ten minutes with a calculator beats any commercial.
Bottom line
Free-nights plans aren't a scam — they're a well-priced product for EV owners wearing a costume that makes average households feel like winners. In our comparison tables, time-of-use plans are flagged (TOU), and they're ranked by the same estimated-bill math as everything else. If one ranks near the top at your usage and you charge a car overnight, take it seriously. Otherwise, the boring plan wins again — as it usually does in Texas electricity marketing.