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Induction vs. LED

Knowing which is the best energy efficient product on the market today is a great advantage for energy auditors and end-users. Don’t be fooled by recent marketing campaigns, do a little research to decide for yourself which product will give you the most bang for your buck.

Who has heard of Induction lighting? (Maybe 25% of you?) Who has heard of LED lighting? It would be safe to assume that more than 98% of you know something about LED lighting.

LED is known for being a great replacement for various types of outdated – inefficient lighting applications. Since LED has been advertised as an excellent replacement for inefficient lighting, we must assume that LED is an energy efficient alternative. In this article I want to address a few issues that I have with the previous statement from a non-bias point of view. My goal by the end of this article is to have you decide which is really better, Induction or LED.

First, let’s look at what makes any type of lighting energy efficient: Efficiency. The efficiency of any fixture type can be found by taking the initial output lumens divided by the fixtures total watts. For example, a fixture puts out 100 lumens (lm) while only using 1 watt (w) of power. So the efficiency of the fixture is 100/1=100 or more commonly know as lumens per watt: 100 lm/w. Currently the standard of an energy efficient fixture will fall into the 75-100 lm/w category.

Let’s take a look at two different fixtures on the market today, one is the ARE-EDG-5M-DA-18-C made by Beta LED, the other is the ESB-EC-200W by EverLast Induction.

First, the Beta LED fixture:

Number of LED’s: 180

Initial Lumens @6000K: 16,137 lm

(Note: When ever a manufacture specifies the initial lumens @6000K, the @6000K is an indicator that the Pupil lumen correction factor has already been applied. For more information about Pupil lumens, read my blog: Photopic Lumens and Scotopic Lumens.)

Initial Lumens @4300K: 14,154 lm

System Watts (Including the ballast or driver): 211 Watts

Total Current @120 Volts: 1.77 Amps

Fixture Efficiency (with correction factor applied) @6000K: 76.5 lm/w

Second, the EverLast Induction fixture:

Lamp Type: 200w

Initial Lumens: 16,800 lm

Initial Lumens @5000K: 32,928 lm

System Watts (including the ballast or driver): 215 Watts

Total Current @120 Volts: 1.77 Amps

Fixture Efficiency (with correction factor applied) @5000K: 153 lm/w

As you can see, the LED fixture (with the correction factor applied) barely managed to comply with today’s standards as an energy efficient fixture (75-100 lm/w.) As with the Induction fixture, it exceeds today’s standards by more than 50%. Both fixtures consume roughly the same amount of power (Watts), however the efficiency of the Induction fixture surpasses the LED fixture. So after reading this article, I hope you can now make an un-biased decision about which is really better, Induction or LED.

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