Free Nights Electricity Plan
Texas Electricity Glossary
A free nights electricity plan charges $0/kWh during defined off-peak nighttime hours — typically 9 pm to 6 am — but applies a significantly higher rate during daytime hours. The plan is a time-of-use structure designed to take advantage of overnight periods when ERCOT wholesale prices are low (often driven by excess wind generation). Households that can shift high-consumption activities to overnight windows — especially EV charging, laundry, and dishwashing — can reduce their effective electricity cost. Households with daytime-heavy usage profiles often pay more than on a standard fixed-rate plan.
How Free Nights Plans Work
The plan has two pricing periods:
- Free window (typically 9 pm – 6 am): $0/kWh energy charge
- Daytime rate (6 am – 9 pm): Higher-than-average per-kWh rate (often 14–18¢/kWh)
The EFL's advertised rate at 1,000 kWh is a blended rate based on an assumed usage split between the two periods. The actual rate depends on your real daytime-to-nighttime usage ratio.
What's Still Charged During "Free" Hours
On most free-nights plans the "free" applies only to the REP's energy charge: your TDU delivery charge is still billed on all kWh — including the free-window ones — because the TDU bills on your total monthly kWh, not the time of use. Some plans, though, waive TDU delivery during the free period too. Direct Energy's EFL, for instance, states that delivery charges are prorated so the customer is not billed for TDU delivery charges during the designated free period. Because it differs by plan, check the specific EFL rather than assuming delivery always applies.
Who Benefits Most from Free Nights Plans
- EV owners: Charging a 60 kWh battery from 9 pm – 6 am = 60 kWh at $0 (free window) vs. up to $10.80 at a 18¢ daytime rate
- Work-from-home households: If your daytime usage is very high (AC, computers, monitors), free nights may not offset it
- Programmable thermostat users: Pre-cooling your home to 68°F before 9 pm and letting it rise to 76°F by 6 am shifts significant A/C load to the free window
- Pool owners: Running the pool pump overnight rather than during the day
When Free Nights Plans Are a Bad Deal
If your household usage is concentrated in daytime hours — young children at home, people who work from home, retirees — the elevated daytime rate can make free nights plans significantly more expensive than a standard fixed-rate plan. Always model your actual usage split before enrolling.
Related Terms
- Effective Rate — key to evaluating free nights: what is your blended cost given actual usage timing?
- Smart Meter — required for time-of-use metering; enables free nights billing
- Fixed-Rate Plan — the standard alternative for households without flexible usage patterns
- ERCOT — overnight wind generation often drives real-time prices low, enabling free nights economics
Frequently Asked Questions
What is a free nights electricity plan?
A free nights electricity plan charges $0 per kWh during defined off-peak nighttime hours — typically 9 pm to 6 am — but applies a higher-than-standard rate during daytime hours. The plan is designed for households that can shift high-usage loads (EV charging, dishwasher, laundry, pool pump) to overnight hours. If most of your usage remains during the day, you may pay significantly more than on a standard fixed-rate plan.
Are free nights electricity plans actually free at night?
The energy charge is $0/kWh during the defined nighttime window. On most free-nights plans your TDU delivery charge still applies to those free-window kWh — the TDU bills for the infrastructure regardless of when you use electricity, so the "free" covers only the REP's energy portion. A few plans go further and waive TDU delivery during the free period too (some Direct Energy free-nights plans, for example, state on their EFL that delivery charges are prorated so you are not billed for TDU delivery during the designated free period). Because it varies, always check the specific plan's EFL. On your EFL, the 1,000 kWh advertised rate blends the free nighttime rate with the higher daytime rate based on an assumed usage split.
How much can I save with a free nights plan?
Savings depend entirely on how much of your usage you can shift to the free window. Ideal candidates are households with EVs (charging overnight), programmable thermostats (pre-cooling before 9 pm), and smart appliances. Industry estimates suggest 30–40% of household usage naturally occurs between 9 pm and 6 am for average households. If you can push that to 50–60%, free nights plans can produce meaningful savings.