CASE STUDY in GRENLite™

Comparison Item		Old Lighting System		New Lighting System
Light Source		Metal Halide High Bay		GRENLite™
Wattage		400W ( per lamp )		200W ( per lamp )
Actual Power Consumption		460W ( lamp & ballast )		210W ( lamp & ballast )
Brightness		373Lux		510Lux
Luminous Efficacy		Low Efficacy, Severe Luminous Decline, Poor CRI		High Efficacy, Low Luminous Decline Excellent CRI
Life Hours		8000 hrs. ( 1 year @ 24 hrs/Day ) ( Change 274 Bulbs Every Year )		100,000 hrs. (10 years @ 24 hrs/Day) ( Change ZERO Bulbs for 10 Years )
No. of Fixtures		274 Sets		274 Sets

Energy and Related Cost Savings:

( 460W – 210W ) * 274 Fixtures = 68,500Watts

68,500 Watts * 24 hours/Day / 1000 = 1,644 kWh per Day Savings

1,644kWh/Day * 365 Days per year = 600,000kWh per Year

600,000kWh per Year * .08 rate = $ 48,000.00/Year Energy Cost Savings

Plus: 274 Lamps * $ 21.00ea. = $ 5,754.00/Year in Replacement Bulbs Costs

Plus: Labor to change Bulbs $ 2,500.00/Year

TOTAL Savings per year: $ 56,254.00

10 Years TOTAL Cost Savings $ 562,540.00