HID Track-Lighting Savings Calculator
Electricity cost ($/KWh)
Lamp burn hours/year
Lamp specific input
Halogen
Metal halide
General-purpose HPS
White HPS
Lamp cost ($)
Fixture cost ($)
Lamp life (hours)
3,000
14,000
20,000
12,000
Lamp power (watts)
150
35
35
50
Ballast power (watts)
NA
10
10
10
Annual energy cost ($)
Annual lamp-replacement cost ($)
Annual lamp-replacement labor cost ($)
a
Total annual cost ($)
Annual savings ($)
NA
Purchase cost ($) (lamp + ballast)
Incremental purchase cost ($)
NA
Simple payback period (years)
NA
Total cost of ownership over 10 years ($)
Cost difference vs. halogen over 10 years ($)
NA
Notes:
a. Lamp-replacement cost assumes 15 minutes per lamp at $25/hr.
NA = not applicable.