Energy Saving?
So the new bulbs are more efficient at converting the energy into light because they do not "waste" so much energy in the form of heat. I do not regard that energy as wasted, as without this extra heat my thermostat will fire up the central heating more often offsetting the electricity saved with more gas burned. How green is a CFL? comparing a bit of glass and tin from the old bulbs to the ceramics,plastics and electronics of the CFLs I would say not very. but what do I know as a heretic denier apostate.