Electricity Costs of LED Ceiling Lights | How Much Per Month? Estimates and Saving Tips

Many of you use ceiling lights daily and might be wondering, "How much does the electricity actually cost?" We've put together a guide on how to estimate costs and tips for saving money.

Calculating electricity costs is very simple

Electricity costs can be calculated using the following formula:

Power Consumption (kW) × Usage Time (h) × Electricity Rate (yen/kWh)

In this article, we will estimate electricity costs using a rate of 31 yen/kWh (an estimate from the Japan Fair Trade Council of Home Electric Appliances). Please note that this is just an estimate, as rates vary by power company and plan.

Estimated electricity costs for lipro ceiling lights

The power consumption of lipro ceiling lights is 55W for 6-tatami mat rooms and 65W for 8-tatami mat rooms (both at full brightness). If we calculate this for 5 hours a day, 30 days a month…

• For 8-tatami mat rooms (65W): 0.065kW × 5h × 30 days = 9.75kWh → Approx. 302 yen/month (approx. 3,600 yen/year)
• For 6-tatami mat rooms (55W): 0.055kW × 5h × 30 days = 8.25kWh → Approx. 256 yen/month (approx. 3,070 yen/year)

These figures are based on continuous use at "full brightness, 100%." In reality, the cost is often lower as brightness can be dimmed and there are times when the light is not in use.

Dimming changes electricity costs

LEDs consume less power when their brightness is reduced. For instance, dimming the lights in the evening or before bed is not only comfortable but also makes sense for saving electricity. With dimmable and color-adjustable ceiling lights, you can easily adjust the brightness to suit any scene.

Furthermore, the standby power consumption (power consumed while waiting for remote control input) is very small, less than 0.8W, so its impact on electricity costs is negligible.

Even greater savings when switching from fluorescent lights

Generally, LEDs consume less power and have a longer lifespan than fluorescent lights, so switching from fluorescent lights offers benefits in both electricity costs and reduced replacement hassle. We explain the "2027 problem" for fluorescent lights in this article.

In lipro's case

lipro solar ceiling lights are 55W for 6-tatami mat rooms and 65W for 8-tatami mat rooms. Designed for a lifespan of approximately 40,000 hours, the longer you use them, the less hassle you'll have with replacements. With dimming down to 1%, you can use them in a way that suits any scene.

Summary: Estimate with "Power Consumption × Time × Rate"

You can calculate your electricity bill yourself if you know your power consumption and usage time. For lipro ceiling lights, the estimated monthly cost is a few hundred yen (which varies depending on usage and electricity rates). By adjusting the brightness according to the scene, you can achieve both comfort and savings.

References

• Estimated electricity rate: Japan Fair Trade Council of Home Electric Appliances (31 yen/kWh)
• lipro "Solar Ceiling Light" (Power Consumption Specifications)
  https://jp.lipro.com/ja-jp/products/ceiling-light-ja