Comment Re:There are far larger DC projects (Score 1) 466
"I've heard of some 40% efficiency gains by avoiding the usual transformers per lamppost."
Or they could go with LEDs driven with very high-persistence phosphors, and run the LEDs direct off the main lines in a rectifier configuration, and have pretty much nil loss associated with a power driver in the first place. Just a proper resistor acting as the bridge element in the center of the diode config is all you would need.