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Induction vs. LED

Induction: Tesla invented induction lighting in 1891, is proven, established as energy efficient and refined. (Tesla also invented AC current)
LED is still under much technical revision and unproven in high power lighting applications.

Induction lighting is a cost effective solution as a new purchase or as a retrofit with a 2 to 3 year ROI when considering energy and maintenance costs. (Without energy rebates or tax incentives)
LED is energy efficient..... but with a 4 to 5 year ROI. (Currently costs nearly twice as much as Ind.)

Induction Lighting is designed for area lighting and does not need to be specially designed for that purpose.
LED is designed for directed/spot lightiing and has to be "domed" with many led's to create the effect of area lighting...which is expensive to make and more vulnerable to premature technical failures.

Induction Lighting has a rated life of up to 100,000 hours.
LED has a rated life of only up to 50,000 hours.

Induction is warranted for 5 years. LED has a shorter warranty of 3 years.

Induction has broad product choices. LED has limited choices of products.

Induction has product standardization. LED has no standardization in their technology as yet.

Induction lighting can maintain output from - 40F to + 122F degrees.
LED has a seriously reduced output (lumen depreciation) above 77F degrees. (Most lights are that hot in an enclosed fixture with just spring/summer ambient temperature). (See the CREE article on temperature)

Induction lighting has an efficiency rating of up to 96 lumens per watt. (100w comp. street lamp)
LED has an efficiency rating of 37-50 lumens per watt. (135 watt street lamp)

Induction: 200 watt bulb is rated at 16,000 "seeable" lumens.
LED: 200 watt bulb is rated at 11,000 "seeable" lumens.....a 31% (less) difference.

Induction Lighting is a better choice for any area lighting application. Please see the products list and call or email for pricing. Carolina Induction is a distributor of quality induction products and can retrofit your fixtures in most cases or install new as needed.

Watts - Electrical Usage 100w 135w
Lumens - Light Output 9,625 lumens 5000 lumens
Efficiency 96 Im/watt 37-50 Im/watt
Rated Lamp Life 100,000 hours 50,000 hours
Applications Unlimited Limited
Light Distribution IES Class I-V Spot
Heat Issues Maintains output from -40 to 122F Drastically reduced output above 77F
Upfront Cost $410.00 $800.00+

Relevant Articles:
LEDs to the Rescue? Not So Fast
Air temperature emerges as a crucial factor in determining lumen maintenance
Lifetime of White LEDs
Underdriving or Overdriving LEDs: coralSky’s Jeff Littlejohn explains LED drive current

Frequently Asked Questions

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Charts & Graphs

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Scotopic/Photopic Ratios for Various Light Sources
S/P Ratio Example Metal Halide - 400 watt has manufacturers rating of 56.9 lumens per watt . This results in 400x56.9=22,760 lumens x1.49 (S/P ratio) =33,912 Visually Effective Lumens. Induction - 200 watt has a manufacturers rating of 80 lumens per watt . This results in 200x80=16,000 lumens x2.25 (S/P ratio) =36,000 Visually Effective Lumens.
Read the Full Story
Lumen Maintenance The Lumen Maintenance curve depicts the actual lifetime of the Visually Effective Lumens (light) as compared to other lighting scenarios. The induction lamp outlasts the competition whether it is HID (MH of HPS) or the newer T5 & T8 anywhere from 3-5 times longer. All the time while maintaining an industry leading lumen output. Read the Full Story
Lamp Lifespan Read the Full Story
Lighting Energy Consumption If we look at light production another way, we can determine how much electrical energy it takes to create a specific level of light using a particular type of lamp. In the chart below, we have set an arbitrary number of 10,000 lumens as an example. By using the average lumens per watt, corrected for VEL/PL from the previous chart, we can approximate how much electrical power it takes to produce the desired light level of 10,000 lumens. The lower the number the better. Looking at a real-world example, we can replace a 250W metal halide fixture with a 200W induction lamp based fixture, or even a 120W induction lamp fixture, thereby reaping a considerable saving in energy costs. Read the Full Story

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