Lik

Sodium vapour street lamps are actually quite low wattage (only up to 200-ish W, I think), but are very bright for the amount of energy they consume.

My question is, how many of these green street lights are there across the country? And how cost effective are they? For the moment at least, solar and wind energy are still not very cost effective, although work in that area definitely needs to be pursued.

-Lik