One of our latest lighting projects.  Replacing 60 400W metal halide high bays with 190W T8 Flourescent lamps

Metal Halides:
T8 lamps:

The lighting is spread more evenly and there is no loss of lumens while using 300 watts less energy per light!

See the images below comparing heat loss on metal halides versus T8's

T5 lamps replacing metal halides
Before
After
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