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This is probably the most common HID light on the market, the 400W HID (Metal Halide or HPS) bulb. It’s not hard to find this fixture in a commercial or industrial facility. Along with their associated ballasts, these lights consume around 455 Watts every time they are turned on. Want to learn how to save 75% or more?

Replacing 400W HID with a LED 100W RetrofitKit

So what is a 100W RetrofitKit? It is essentially a kit containing everything to replace the HID bulb and ballast in an existing fixture. Using your existing fixture, we basically take all the parts out of the fixture (bulb, ballast, reflector and socket). To replace 400W HID, we recommend our 100W LED Retrofit Kit.
Our Retrofit Kit includes a LED Head and all the brackets to install the head into the existing fixture. It also includes an external LED Driver.
Installing a Retrofit Kit is quick and painless:
1. remove the bulb.
2. remove the ballast
3. remove the reflector (you won’t need it as LED light is directional)
4. remove the socket that held the old HID bulb.
Once the fixture is gutted, you will need to figure out what mounting option works best. The supplied mounts provides many options. Mount the driver where the old (removed) ballast was located and wire it to the input wires of the fixture. Install the head onto the mounting bracket you configured, and hook up the drivers red / black wires to the LED Heads red / black wires.
Clean the lens and lock up the fixture. You’re done.

Energy Savings: 100W LED versus 400W Metal Halide

Below is a chart showing how much you can save, per fixture, converting from 400W HID to 100W LED. This assumes 12 hours a day operation, 365 days a year.

100 LED Watts replacing 400 Watts for 12 hrs/day 365 days/yr saving 1577 kw/year *

Cost per kw/h Savings per year
.06 $95
.08 $126
.10 $158
.12 $189
.14 $221
.16 $252
.18 $284
.20 $315

* includes ballast draw

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