How much does it cost to run a led night light?
A typical led night light draws about 1 watts. Used 8 hours a day, that works out to roughly $0.00 per day, $0.04 per month, and $0.50 per year on an average electricity rate of 17¢ per kWh. LED night lights consume less than 1 watt making them one of the most efficient home devices.
LED Night Light running cost calculator
- Per day
- $0.00
- Per month
- $0.04
- Per year
- $0.50
- CO₂ / year
- 1.2 kg
Based on 2.9 kWh per year. Adjust the price per kWh to match your latest electricity bill for an exact figure.
The number that matters most is your own electricity rate. Rates range from under 11¢ per kWh in some regions to over 30¢ in others, so the same led night light can cost two or three times as much depending on where you live. Enter your exact rate in the calculator above to get a figure tailored to your bill.
Lighting such as the led night light is cheap per hour but runs for long stretches, so the annual total is driven almost entirely by how many hours it stays on. Switching to LED and adding timers or motion sensors are the highest-impact changes here.
At 1 watts, the led night light is a low-power device, so its cost per hour is small. The annual total only becomes meaningful if it runs for many hours a day — which is exactly why long-running low-wattage devices are easy to overlook on a bill.
Over a full year this led night light uses about 2.9 kWh of electricity and is responsible for roughly 1.2 kg of CO₂ emissions on an average grid. Because it runs more or less year-round, even a small reduction in daily use carries straight through to a lower annual total.
To put the draw in everyday terms, one hour of running this led night light uses about as much electricity as charging a smartphone 1 time. It is a rough comparison, but it makes an abstract wattage figure easier to picture.
If this led night light is one you use daily, even small efficiency gains compound. Cutting its usage or wattage by 20% would save around $0.10 every year — money that an efficient replacement can recover over its lifetime.
Frequently asked questions
- How much does it cost to run a led night light per hour?
- At 1 watts and a 17¢/kWh rate, a led night light costs about $0.00 per hour to run.
- How much electricity does a led night light use per month?
- Running 8 hours a day, a led night light uses roughly 0.2 kWh per month, costing about $0.04.
- How many kWh does a led night light use per year?
- Used 8 hours a day for 365 days a year, a led night light consumes about 2.9 kWh annually — that is the figure your electricity rate is multiplied by to get the $0.50 yearly cost.
- Is a led night light expensive to run?
- Not particularly — at around $0.50 per year, a led night light is a relatively minor part of most electricity bills.
- How much CO₂ does a led night light produce?
- On an average grid, a led night light used this much is responsible for roughly 1.2 kg of CO₂ per year. The exact figure depends on how clean your local electricity supply is.
- How can I reduce my led night light running costs?
- Use it during off-peak hours if your utility offers time-of-use pricing, reduce daily run time, and consider an ENERGY STAR rated led night light, which uses less power for the same job.