The Re-Fire Strikes Back

Cree 4flow LED lampAgain, welcome to 2015.  And a happy 2015 it is, at least in energy.  Not only have LED lamps fallen in price drastically from just a few years ago, but they continue to improve, in multiple respects.  Cree, one of the bigger names in LEDs, didn’t just release their groundbreaking lamp about a year ago.  They’re now on their generation-2 product, and yes, competition has improved the breed.

I’ve just installed Cree’s “4flow” LED lamp.  I bought this standard Edison base (“A19”) in 40-Watt equivalent.  Actual consumption is 6W, saving 34 nega-watts, or 85% less than an incandescent bulb of the same light output.  That’s also a savings over a compact fluorescent, though far less.  The big trick is getting rid of incandescents, which have only a few percent light efficacy.  The other ~97% of the electricity you put in is wasted as heat.  Basically, incandescents are little heaters that, oh by the way, make some light too.  But unlike fluorescents, LEDs turn on instantly.  They’re vibration, cold, and cycling resistant.  Their lives aren’t shortened by on-off cycles, such as bathroom and hallway installations.  Nor do they contain any mercury, though the mercury level of CFLs has been exaggerated. Continue reading

Followup: 4 Light Bulbs…Of THE FUTURE

04cHappy solstice!  How better to observe than lots of light, but little juice.  Earlier I had written on nulling out the electricity of my vehicle, by saving it elsewhere- “negawatts.”  I said nothing on LEDs (solid state emitters) at the time.  While efficient, very long-lived, and fast, they were almost fifty bucks.  Then 40, then 30… see where I’m going?

This Spring, Cree’s bombshell hit shelves: dimmable LEDs, in the usual A19 thread (“Edison base”), at ten dollars (40W equivalent; a “60W” was $14.)  At 6 actual Watts, I’d score 34 negawatts in one move.  Still, I held out.  Only one store (Home Depot) had it, only in multi-packs.  But reviews have been kind, they’re now sold individually, and the price has fallen (after rebates) to… six bucks.  It’s now a no-brainer: more efficient than compact fluorescents (barely), with no hum/flicker, lag time, or power-cycling issues, at nearly the same price.  If it all works, that is.  Does it? Continue reading