Hit the Lights, Cut Power by 50% or More, Says PG&E

Those building automation systems for controlling lights actually work, says a new PG&E study. Expect sales to zoom. [...] Technology from EnOcean, meanwhile, curbed power consumption by 63.6 percent, but the result varied with the technologies EnOcean was partnered.[...] EnOcean, by contrast, relies upon a wireless protocol that requires very little power. (EnOcean's technology is used to make wireless light switches: The kinetic energy from someone flipping a switch is large enough to send a signal on the network.) EnOcean's performance, however, depended on the type of ballast with which it was matched.

(Source www.greentechmedia.com, 27.08.2009)