– amit (www.greenzu.com)

– amit (www.greenzu.com)

A 100W CFL is about $2 (4 for $8) and I got most of mine for 25c with the utility rebates a while back. They produce 1600 lumens for about 27W or 42VA.

A 100W incandescent sells for anywhere near 25c with no rebate and gives about 1600 lumens too and power is actually 100W and 100VA. Of course these will be gone in a year or two but are still useful for recessed spaces or bath overhead.

A 160 lumen LED is about $20 but might use 5W or 7VA est. That is 10x the cost and 10x dimmer before any rebates. Not sure if rebates should ever be granted for these, they are just too obscene.

The HomeDepot guy told me he had sold 1 or 2 that figures.

As a chip guy I pretty much fear these are not going to come down in cost fast enough since they are not based on Si but on the much more expensive Gallium Arsenide/Nitride/Phosphide III/V compounds. Right now silicon LEDs are not practical, there are several companies researching these devices that could use the much cheaper silicon manufacture process.

I see the DOE has an X prize, or L prize to get the next generation of lighting with at least a 50% improvement in lumens over CFLs or current LEDs and these need to be cheaper with better colors and solid state.

Personally I will hold out for a couple of years to see if any of OLED, Quantum dot LED, planar LED, or Si based LED come out.

A 100W CFL is about $2 (4 for $8) and I got most of mine for 25c with the utility rebates a while back. They produce 1600 lumens for about 27W or 42VA.

A 100W incandescent sells for anywhere near 25c with no rebate and gives about 1600 lumens too and power is actually 100W and 100VA. Of course these will be gone in a year or two but are still useful for recessed spaces or bath overhead.

A 160 lumen LED is about $20 but might use 5W or 7VA est. That is 10x the cost and 10x dimmer before any rebates. Not sure if rebates should ever be granted for these, they are just too obscene.

The HomeDepot guy told me he had sold 1 or 2 that figures.

As a chip guy I pretty much fear these are not going to come down in cost fast enough since they are not based on Si but on the much more expensive Gallium Arsenide/Nitride/Phosphide III/V compounds. Right now silicon LEDs are not practical, there are several companies researching these devices that could use the much cheaper silicon manufacture process.

I see the DOE has an X prize, or L prize to get the next generation of lighting with at least a 50% improvement in lumens over CFLs or current LEDs and these need to be cheaper with better colors and solid state.

Personally I will hold out for a couple of years to see if any of OLED, Quantum dot LED, planar LED, or Si based LED come out.