Induction for exterior lighting is superior to LED in several ways. LED is almost totally directional as each diode emits light in a distinct orientation and it's very difficult to build a reflector or refractor that will spread it as we are used to. Also, LED's emit light in a wavelength that is objectionable to dark-sky advocates and the beams from each diode are intense enough to reflect off the ground more than usual. LED's also lose about 20% of their initial lumens after just 20,000 hours, even though they last much longer. The high initial cost and the fact that LED's are mostly non-serviceable "throwaways" make induction very economical by comparison
