LED floods Vs. HID floods for parking lot/yard lighting

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titan1021

titan1021

Senior Member
Location
Northern California
Hoping to get a little advice.

I am bidding a job to replace parking lot and yard lights in an industrial area. The existing light poles are approx. 40' tall and have (4) 400w HID floods per pole around the perimeter of this very large yard. The client would like to replace them with LED fixtures. I was surprised to see that the largest LED flood from RAB is 150w putting out approx. 14,500 lumens. The existing 400w HID floods put out between 40,000 to 50,000 lumens, depending on the the type of lamp. Clearly just swapping out the fixtures on the bullhorns would not put out near as much light. Adding new additional poles isn't an option as the entire yard is asphalt. Has anyone run into this dilemma? Does anyone know of a manufacturer that makes a brighter LED flood or one that is comparable to a 400W HID fixture. Seems like LED's just aren't up to the task.

Thanks
 
titan1021

titan1021

Senior Member
Location
Northern California
I know of Cree and their reputation in the industry, never realized they were making those type of fixtures too.

Thanks for pointing me in that direction!



Smart $ said:
The only one I know of offhand is Cree...

http://www.cree.com/Lighting/Applications/Indoor-and-Outdoor-Applications/Parking

Just looking at the Cree Edge High Output I saw a 5700K 240LED model head that outputs ~75k lumen initial.

I'm sure there are other H.O.L.E.D. manufacturers out there... but Cree has been a leader for some time.
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brantmacga

brantmacga

Señor Member
Location
Georgia
Occupation
Former Child
We're using the D-series from Lithonia and the viper series from beacon. The vipers are 280w; I can't remember exactly what the lithonias are but I think the last ones I ordered were the dsx2.
 
S

Shoe

Senior Member
Location
USA
Remember you can't compare lumens between HID and LED apples-to-apples for outdoor lighting. The initial lumens of an HID will depreciate nearly 40% over the lifetime of the lamp.

Also, the LED is "delivered" lumens but the HID source will be knocked down by the inefficiency of the fixture/reflector.

The best way to review is to do photometric calculations between sources and including the appropriate light-loss factors. You will find that LED's actually represent very well for exterior lighting applications.
 
Electric-Light

Electric-Light

Senior Member
Shoe said:
Remember you can't compare lumens between HID and LED apples-to-apples for outdoor lighting. The initial lumens of an HID will depreciate nearly 40% over the lifetime of the lamp.
Click to expand...

The amount LEDs depreciate must be carefully considered. If they're using L70 life rating, they depreciate 30% over the rated life.
 
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