Wait for the "plasma paint" I have invented. It is a bottom coat of conducting metallic paint and a patented pebble dash mixture of LED material as the middle coat. In fact you could say it is thousands of tiny LEDs.Then a translucent white paint (or other colour) to make it look nicer as the LED self colour is a greyish brown. It works at a safe 12 volts DC and two square metres of paint gives three times the light that a 100 watt bulb gives. It is dimmable down to zero light. So your ceiling could be painted all over and give you all the light you need. It uses about a tenth of the power that an incandescent bulb would use to light the same areas. Early signs are that an installation would cost about £200 per average ceiling which would recover the cost in electricity in about two years. This will be introduced in 2012 unless I am killed by an electric bulb company to stop my invention progressing.
- Alistair Hillier Manser, Sandbanks UK, 23/11/2011 16:14
Calling bull on this one since "LED material" would be 2 layers of stuff, there are physical limits on the size of an LED
(OK he's vague about the "Pebble dash" so he could be describing an array of small diodes like a television).
You would need another conductor on the other side (Front) for the current to flow.
£200/room seems a bit steep, and his cost savings projection is relative to incandescents.
As an alternative, plug in 2 or 3 energy saving lightbulbs (A tenner).