The Energy Savings of Light


Visual comfort is not the only reason for reducing ambient light levels, there are also significant savings that can be achieved by reducing the overall power usage. The tables below illustrate the savings earned by specifying 40 Foot Candles (FC) versus the old standard of 100 FC. The money saved from reducing overhead lights could be used for individual task lighting.

100 FC at Desk
 
     

# of Fixtures Needed
4
# of Lamps Needed
16
Total Fixture Cost (Avg. $200)
$800.00
Hours Per Year (8/day)
2,080
Watts Per Sq. Ft.
2.56
Total Power Load
0.512kW
Energy Cost Per Year ($0.12/KWH)
$127.80
Energy Cost + Fixture Cost
$927.80

 
40 FC at Desk + LED Desk Lamp


# of Fixtures Needed
1
# of Lamps Needed
4
Total Fluorescent Fixture Cost (Avg. $200)
$200.00
LED Task Light Cost
$100.00
Hours Per Year (8/day)
2,080
Watts Per Sq. Ft.
0.68
Total Power Load
0.136kW
Energy Cost Per Year ($0.12/KWH)
$33.95
Energy Cost + Fixture Costs
$333.95
Annual Savings Over 4 Light Configuration
$593.85



ITC Incorporated 
230 E. Lakewood Blvd. 
Holland, MI 49424 
616-396-1355 
sales@itc-us.com 

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