i ran across this page a dfew weeks ago that sells lighting equipment such as bulbs,fixtures,and acessories such as ballasts,and photocells check it out,the company is Green Lighting

I think it's interesting that suddenly everyone is so concerned about green lighting.  What does that mean exactly?  For the last ten years, CFLs have been advocated as the new way to cut down on power usage.  Aside from that, what huge technological advances in lighting have occurred? Low mercury T8 fluorescent lighting, in which the ballasts crap out after 3 years and the tubes lose vacuum?  LEDs that aren't yet where they should be to replace ANY kind of current widely-used lighting technology?  I think green lighting should encompass stores/businesses/etc. where lights are left on for no reason, for example, storefront signage, night lights, etc.  Why should lights be on when no one needs them?  Dayburning streetlights.  Address that, before deciding to retrofit everything with "new" stuff that requires more maintenance and hasn't yet proved its efficacy.  That's just my opinion, but I think until a way to light spaces using NO energy is introduced, people should stop retrofitting what already works, ESPECIALLY if it requires little maintenance.

I think it's interesting that suddenly everyone is so concerned about green lighting.  What does that mean exactly?  For the last ten years, CFLs have been advocated as the new way to cut down on power usage.  Aside from that, what huge technological advances in lighting have occurred? Low mercury T8 fluorescent lighting, in which the ballasts crap out after 3 years and the tubes lose vacuum?  LEDs that aren't yet where they should be to replace ANY kind of current widely-used lighting technology?  I think green lighting should encompass stores/businesses/etc. where lights are left on for no reason, for example, storefront signage, night lights, etc.  Why should lights be on when no one needs them?  Dayburning streetlights.  Address that, before deciding to retrofit everything with "new" stuff that requires more maintenance and hasn't yet proved its efficacy.  That's just my opinion, but I think until a way to light spaces using NO energy is introduced, people should stop retrofitting what already works, ESPECIALLY if it requires little maintenance.

brian,green-lighting refers to the name of the company in this case they manufacture (wallpacks,canopy fixtures,cobraheads,lamps,ballasts ect...)

you were probably referring to the act of using more energy efficent lighting sources which is often called green lighting.

They should make a photocell that won't dayburn

There are photocells available that fail in the off position.

they should make photocells that dont fail at all!

Quite hard Form109, nothing is eternal! Even the LifeGuards from the 60s.

very true...photocells often fail from welded contacts,or deteriation of the EYE.

Quite hard Form109, nothing is eternal! Even the LifeGuards from the 60s.

A bit corrected: They should not fail within well predictable (long enough) lifetime, so their mortality curve would be nearly rectangular. Then it's not as big issue to plan-in their group-replacement (together with relamping), so no photocell then fail on the street.
Loose welds is a quality problem (voids in the material, thermal stress) and this should be possible improve.
Eye wear is well predictable process, so it's lifetime should be well predictable and the eye designed so it will reliably work for the required lifetime.
Material fatigue is again well predictable process, so it's lifetime should be well predictable (contacts, springs).