Energy Comparison

Induction lighting offers significant energy savings compared to traditional lighting technologies. This comparison examines the energy consumption and operating costs of induction lamps versus common alternatives.

Energy Consumption Comparison

Lighting Type	System Watts	Lumens Output	Lumens/Watt	Annual kWh (4000h)
Induction Lamp	100W	7,500 lm	75 lm/W	400 kWh
High Pressure Sodium	150W	14,000 lm	93 lm/W	600 kWh
Mercury Vapor	175W	7,000 lm	40 lm/W	700 kWh
Metal Halide	175W	14,000 lm	80 lm/W	700 kWh
Compact Fluorescent	42W	2,800 lm	67 lm/W	168 kWh

Real-World Energy Savings

When comparing actual visibility (accounting for S/P ratio and light distribution), induction lamps often outperform higher-wattage traditional lamps:

A 100W induction street light can replace a 150W HPS fixture — 33% energy savings
A 80W induction high bay can replace a 175W metal halide — 54% energy savings
A 40W induction down light can replace a 100W mercury vapor — 60% energy savings

Total Cost of Ownership (10 Years)

Cost Factor	Induction (100W)	HPS (150W)	Savings
Initial Fixture Cost	$180	$120	-$60
Energy Cost (4000h/yr × $0.12/kWh)	$480	$720	$240
Lamp Replacements	$0 (no replacement)	$150 (3 lamps)	$150
Maintenance Labor	$0	$300	$300
Total 10-Year Cost	$660	$1,290	$630

Environmental Impact

Switching from HPS to induction lighting for 1,000 street lights saves approximately 200,000 kWh annually, reducing CO2 emissions by 140 tons per year — equivalent to planting 5,600 trees.

Payback Period

Typical payback period for induction lighting retrofits ranges from 1.5 to 3 years, depending on energy costs, operating hours, and maintenance expenses. After payback, the savings continue for the remaining 7-8 years of lamp life.

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