Are "Free Nights" Electricity Plans Really Free? (Texas 2026)
"Free nights" and "free weekends" plans are some of the most aggressive marketing in Texas electricity. The pitch is simple: pay nothing for electricity used during certain hours. The catch is equally simple: you pay more for every other hour to make up the difference. Whether this is a good deal depends entirely on what percentage of your usage lands in the "free" window — and most households get it wrong.
How "free" works mathematically
A typical free-nights plan might charge 16¢/kWh during "paid hours" (6am–10pm) and 0¢/kWh during "free hours" (10pm–6am). Compare that to a boring 12¢/kWh flat-rate plan. The free-nights plan only beats the flat plan if you use a LOT of your electricity in the 10pm–6am window. Specifically, you need about 37% of your usage to happen between 10pm and 6am for the math to break even. That's a very high bar.
Most Texas homes use 15-25% of their electricity at night. If you're at 20% overnight usage on a free-nights plan priced at 16¢ paid / 0¢ free vs a 12¢ flat plan, your effective rate is actually 12.8¢/kWh — higher than the flat plan. The "free" marketing hides a 7% premium.
Who actually wins with free-nights plans
- •EV owners who charge exclusively overnight — a Tesla charging on L2 from 11pm to 5am can easily shift 40-50% of total household kWh into the free window.
- •Pool pump households that can schedule their pump for the free hours — pool pumps often run 8 hours/day and consume 1-2 kWh each hour.
- •Households with smart thermostats that aggressively pre-cool (or pre-heat) during free hours and coast during paid hours.
- •Houses with battery storage that charges at night and discharges during the day — these effectively convert 100% of usage to "free hour" rates.
Who loses with free-nights plans
If you run your AC heavily from 3pm to 9pm in July (pretty normal for Houston / Dallas), most of your usage is in the expensive window. If you work from home, even more so. If you cook dinner at 7pm, run a dishwasher at 8pm, and then actually go to sleep at 10pm like a normal person, you're paying the premium rate for almost every kWh you consume. A boring 12¢ fixed-rate plan beats a free-nights plan handily for the typical 9-to-5 household.
Most smart meters in Texas track usage by 15-minute interval and can break down your consumption by hour. Voltcheckr uses this data (when available) to compute your actual overnight percentage before ranking free-nights plans — so you see whether one would actually save you money at YOUR usage pattern, not a generic assumption.
Curious whether a free-nights plan would actually save you money? Upload your bill and Voltcheckr ranks every plan — including free-nights variants — at your real usage pattern.
See the honest math →