Use this calculator to determine your Annual Energy
Cost Savings resulting from changing to LED lights
ENERGY USAGE SAVINGS
| 1. Compute the total power (kilowatts, kW) saved by upgrading FLUORESCENT lights to energy saving LED tubes | |||||||||||||||
| Original Lamp Wattage |
Replacement Lamp Wattage |
Watts Saved per Lamp |
Qty of Lamps |
Total Watts Saved |
Total Kilowatts Saved |
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| W– | W= | Wx | = | /1000= | |||||||||||
| 2. Compute the total energy (kilowatt hours, kWh) saved annually by performing this upgrade | |||||||||||||||
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| 3. Compute the total energy cost savings per year | |||||||||||||||
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BULB COST SAVINGS
| BULB COST | LED lifespan (Hrs) | Your Yearly Usage | |
| Original Bulb lifespan (hrs) | hrs/year |
| Description | Price per bulb | # Bulbs for 10 yrs | # of Bulbs | Cost of Bulbs for 10 yrs | |
| Cost of LED Bulbs | $ x | x | = | $ | |
| Cost of Original Bulbs | $ x | = | $ | ||
YOUR TOTAL SAVINGS
| Simple Payback= | Initial Cost of Lighting Upgrade | $ = | RETURN ON INVESTMENT |
| Total Energy Cost Savings per Year | $ | years | |
| OVERALL SAVINGS / YEAR= | SAVINGS FROM USAGE | $ | Yearly Saving $ |
| SAVINGS FROM BULB COST/YR | $ | ||
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