Saving calculator on LED lamps
Find out how much you can save by switching to LEDs
to calculate your savings
Savings calculator for LED lamps and payback calculation
💡 How much money do old light bulbs actually “eat up”?
Replacing conventional incandescent lamps with light-emitting diode (LED) lamps is the simplest investment with a return of more than 100% per annum. Our calculator shows the exact numbers of your benefits per month and year.
How to use the calculation:
- Wattage:Indicate the wattage of old lamps (usually 60, 75 or 100 W) and new LEDs (usually 6-12 W).
- Time: How many hours a day the lights are on (this value is higher in winter).
- Tariff: Enter the cost per kilowatt in your region.
💰 A real example of savings
Let's say you have 5 lamps in your chandelier. You are replacing the old “Ilyich light bulbs” (60 W) with modern LEDs (7 W).
- 📉 Consumption: Drops from 300 W to 35 W (8.5 times!).
- 💸 Money: When working 5 hours a day and a tariff of 5 rubles/kW, you save 2400 rubles per year on only one chandelier.
- ⏱ Payback: New lamps will pay off their cost in 2-3 months.
Why should you switch to LED right now?
🔥 Security
Old lamps get very hot, which damages chandelier sockets and suspended ceilings. LED lamps remain slightly warm even after hours of operation.
⏳ Durability
LED service life is up to 50,000 hours. You will forget what a burnt out light bulb in the toilet or hallway is for the next 5-7 years.
Frequently asked questions (FAQ)
❓ How accurate are the calculator's calculations?
The error is minimal (less than 5%) and depends only on the stability of the voltage in your network. The formulas are based on the physical laws of power consumption.
❓ How to calculate if the tariff is day/night?
Make two calculations: separately for daytime hours and separately for evening/night hours, using different tariff rates. To accurately track changes in tariff zones in different regions, time informer can be useful.
❓ Is it worth changing all the lamps at once?
It is most financially profitable to replace lamps in those areas where the light burns the longest: kitchen, living room, hallway. In a closet or on a balcony, where the lights are rarely turned on, replacement can be postponed.