Industrial Lighting: Energy Efficiency

Energy savings will depend on: Industrial Lighting - Energy Efficiency

Wattage of bulbs
Efficiency of ballasts
Dim ability through occupancy or daylight sensing
Hours of operation & cost per kWh
Operating temperatures

Lighting Retrofits: As a general rule, switching from older lighting types - HIDs or T-12s - to newer T-8s or T-5s can save about 30%+ of the wattage used. There are other improvements, such as high-efficiency reflectors which can also improve performance. The following table outlines average savings you can expect from these upgrades.

SWITCHING FROM	AVG ENERGY USED	SWITCHING TO	AVG ENERGY USED	AVG SAVINGS
HID Lighting with magnetic coil	460 Watts	HID Lighting with digital ballast	400 Watts	15%
Standard reflector	400 Watts	Higher quality reflector	360 Watts	10%
HID or Fluorescent (T-12) fixtures with magnetic ballasts	400 Watts	Fluorescent fixtures with digital ballasts and T-8 lamps	280 Watts	30%
Fluorescent fixtures with digital ballasts and T-8 lamps	280 Watts	Fluorescent fixtures with digital ballasts and T-5 lamps	225 Watts	20%
Occupancy sensors or daylight sensors can save an additional10-20%