LED watt savings
Compare incandescent vs LED display watts over your hours and electricity rate to see kWh and dollar savings.
Formula
kWh = watts × hours × nights ÷ 1000 · cost = kWh × $/kWh · savings = incandescent_cost − LED_cost
Use the rate from your utility bill if you have it.
FAQ
Where do I find watt ratings?
Check the packaging or UL label on each string; multiply by the number of strings on the display.
What rate should I use?
Enter your residential $/kWh from a recent bill. Defaults are only placeholders.
Do LEDs always save money?
They usually use far fewer watts for similar brightness, so seasonal cost drops when hours are long.
Is this the same as display kWh cost?
Display kWh cost estimates one setup’s bill impact; this page focuses on the savings gap between two wattages.