LED Savings Calculator
Calculate energy and cost savings from switching incandescent bulbs to LED lighting.
Annual Cost Savings
Annual Energy Saved
Power Saved
Calculation Steps
Why Switch to LED Lighting?
LED (light-emitting diode) bulbs use up to 85% less energy than traditional incandescent bulbs while producing the same amount of light. A 60-watt incandescent bulb can typically be replaced with a 9-watt LED that delivers equivalent brightness (around 800 lumens). Because lighting accounts for roughly 15% of a typical home's electricity use, switching to LEDs is one of the simplest and most cost-effective ways to lower your energy bills and reduce carbon emissions.
Key Benefits of LEDs
- Lower energy use: Up to 85% less electricity than incandescent bulbs
- Longer lifespan: LEDs last 15,000-25,000 hours versus ~1,000 hours for incandescent
- Less heat: Most energy becomes light, not wasted heat
- Lower emissions: Reduced electricity use means a smaller carbon footprint
- Instant savings: Lower bills from the first day of use
How the Calculation Works
This calculator compares the power draw of your old bulbs against your new LEDs to estimate annual savings. The formulas used are:
- Watts saved = (old watts − new watts) × number of bulbs
- Daily kWh saved = watts saved × hours per day ÷ 1,000
- Annual kWh saved = daily kWh saved × 365
- Annual cost saved = annual kWh saved × price per kWh
References
The efficiency figures used in this calculator are based on data from official government energy sources:
Note: This calculator provides estimates based on the values you enter. Actual savings depend on your local electricity rates, bulb usage patterns, and the specific bulbs being compared. The calculation assumes consistent daily usage across all 365 days of the year.