LED's are now the most efficient commercial light source on the planet. They are 10 times more efficient than incandescent bulbs and more than twice as efficient as fluorescent bulbs. When you add the reduced maintenance and replacement costs to the equation, we find that LED's can save you up to 70% on your lighting costs.
Lighting costs are usually between 20-50% of your total energy use, which means that an LED retrofit can cut your total energy bill by 14-35%!
As an example, each fluorescent office bay of tubes (typ. 2' x 4') uses about $100 of electricity each year if they run from 6 AM to 6 PM. The latest generation of LED tubes only uses $30 of electricity for the same lighting bay each year. For every 100 lighting bays that adds up to $8,000 of annual savings. The 70% energy savings is dramatic, and it is enhanced by the fact that the bulbs last for 50,000 to 80,000 hours (over 25 years at the typical 2,500 hours per year). By comparison the fluorescent bulbs only last for 15,000-20,000 hours. The reduced maintenance costs can boost your lighting savings beyond 70%.
The table below shows that lighting is the smartest investment you can make to reduce your energy bills and this is before LED's!
|Single-Technology Projects||Average Project
Payback Period (years)
|Average Project ROI (%)|
|Motors & Drives||2.4||42%|