A ban on incandescent lamps would backfire in some cases. One opf them is that motion detecting indoor wall switches are incompatible with CFL refit lamps. The indoor motion sensing switches require a load that is a closed circuit for both direct current and alternating when in the off state. This is because switch loops do not have a neutral and the motion switch needs to draw a small trickle of current through the load when in the so called off state. Electronic ballasts do not work in this application - only incandescent lamps and autotransformer ballasts will work.

The idea is to turn on a light in an entryway or walk-in closet for a short time and them automatically turn off the lamp both to save energy and as a convenience. One of the entrances to my sister's house is an alleged laundry room where manual light switches are absolutely useless - when passing through to the garage you are only in there for about 5 to 10 seconds. Similarly, her son Dean forgets to turn off closet lights.

One way around this is to connect an inductance in parallel with the fixture or electronic ballast. Please note that interposing a relay does not work because the "off" state current of the switch is enough to keep an ice cube relay closed. The shunt inductance needs to present a closed circuit equivalent to a 60 watt incandescent lamp that is in the "off" state.

Electronic ballasts and CFL refit lamps also pose a similar problem with lighted when off wall switches.

What would be even more wasteful is if somebody connects say a 60 watt electric heater in parallel with the fixture. There are little electric heaters that use a medium screw base for applications that require only a small amount of heat.