LED Savings Calculator
Calculate financial savings, ROI, and CO2 reduction by switching from incandescent to LED bulbs. Includes total ownership cost analysis.
Current Setup (Incandescent)
New Setup (LED)
Usage Details
$0.00
Saved per Year
10-Year Savings$
ROI Break-even
CO2 Avoided lbs/yr
🌱 Equivalent to planting trees annually!
About
Lighting accounts for approximately 15% of an average home's electricity use. Switching from incandescent bulbs to Light Emitting Diodes (LEDs) is one of the highest ROI investments a homeowner can make. LEDs use up to 90% less energy and last 25 times longer.
This tool calculates not just the electricity savings, but the "Total Cost of Ownership," factoring in the replacement cost of short-lived incandescent bulbs over time.
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Formulas
Annual Savings S is calculated as:
S = (Wold − Wnew) × H × 365 × Ckwh1000
CO2 avoided is estimated at 0.85 lb per kWh saved.
Reference Data
| Feature | Incandescent | CFL (Compact Fluorescent) | LED |
|---|---|---|---|
| Wattage (Brightness Eq.) | 60 W | 14 W | 7 W |
| Lifespan | 1,000 hours | 10,000 hours | 25,000 hours |
| Cost Per Bulb | $1.00 | $2.50 | $4.00 |
| Heat Emission | 85 BTU/hr | 30 BTU/hr | 3 BTU/hr |
| Annual Cost (4hr/day) | $10.50 | $2.45 | $1.22 |
Frequently Asked Questions
This is the moment in time when the money saved on electricity bills equals the initial cost of buying the new LED bulbs. After this point, everything is pure profit.
LEDs contain semiconductor components and heat sinks, making them more complex to manufacture than a simple wire filament in a glass bulb.
Many are, but you must check the packaging. Using a non-dimmable LED on a dimmer switch can cause flickering or shorten the bulb's life.
This describes the color of the light. 2700K is "Warm White" (yellowish, like incandescents), while 5000K is "Daylight" (bluish-white).