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LED street lighting Answered

Hi guys, 

I'm thinking about making some LED street lights. Is this a feasible idea? Can anybody do an instructable on this topic please. 


Yes I have checked the websites that offer LED street lighting and they seemed darned expensive. I don't think a small country like mine (Sri Lanka) Is there a way to build one. I have seen some instructibles, by people who have created the LED fluorescent tubes and such. Can we do something like that? If we can do something like this will the luminosity be enough for a street light?

It is probably feasible but probably not cost effective at the moment.  You could research the required output (lumens, liqht quality -color) and come up with the equivalent LED system that matches it.

That said, on the market today are LED garden lights, traffic signal lights, lower wattage household lightbulbs, and small worklights.  As you get bigger output, there seems to be an issue with heat given off, maybe from the power transformer needed to drive it.  High power LEDs at the moment are expensive.  Also, you probably need to design the optics to focus or diffuse the single point LEDs.  Good luck.

Commercial LED street lights are available now. From what I understand they are more expensive than the high pressure sodium (orangish/pinkish light) or mercury vapor lights used now. The city of Seattle is on a pilot program to replace some high pressure sodium lights with LEDs in several neighborhoods on a trial basis.

w/ref heat: street-lamps get rather hot, but the other electrics are usually at ground-level.


LED street lights likely do not get very hot at all. LEDs are so cool that when they are used in traffic signals snow can pile up in them because they are not warm enough to melt it.

Another addition - standard sodium lights are pretty efficient and have a long service life. It probably wouldn't be feasible to replace them early with LED ones without incurring a big cost both environmentally and economically.

i believe the high-pressure pink ones are even better?


Pretty sure they are, also they tend to replace lamp posts whole, which makes me think the bulb and electronics last as long or nearly as long as the posts take to get old and rusty...