JWS: ‘In case you missed this article, it describes the same disappointing experiences I have had with a couple of dozen CFLs (which you have lauded from time to time).’

☞ I’ve had some die, too. The dimmable ones seem most problematic. But most just keep burning and burning, saving a ton of energy.

That said . . .


Bill Bruno: ‘OK these are not very bright (billed to take the place of 40-watt bulbs) … but 1.5 watts! And unlike CFLs they don’t put out all kinds of radiofrequency interference, don’t have mercury, and don’t have high frequency flicker.’

☞ And give off no appreciable heat. I bought 4 for $40 with the shipping despite the fact that we have no candelabra. (This little converter solves that problem nicely for under $2.)

It’s a stretch to say they’re equivalent to a 40-watt incandescent. But one bulb is enough to light a small room sufficiently to keep you from banging into things. And one clamped to a shelf just above my head makes for an acceptable reading light.

Leaving all 4 on night and day for a full year would cost about $6. Compared with $160 to run 4 40-watt bulbs all year . . . a saving, if you have some reason to leave lights on all year around the clock – which I hope you do not – of $154 a year on a $40 investment.

The saving is lower in comparison with CFLs, but still significant.

This brand is not recommended for dimmers.


An easy benchmark from which to make back of the envelope estimates:

One Watt, One year, One dollar
by Eric Drexler on March 8, 2009

For residential customers in the U.S., the average price of electricity has recently been at $0.115 per kilowatt-hour. This works out to almost exactly $1 per Watt-year: Leave a 100 Watt light bulb on for a year, pay $100. I found this surprising when I calculated it. The number is simple, memorable, and encourages conservation. Pass it on.

☞ Pass it on, indeed.

(A kilowatt is 1,000 watts. Draw 1,000 watts for 1 hour, and you’ve consumed 1 kilowatt-hour. As there are roughly 9 thousand hours in a year, running 1 watt all year requires 9 kilowatt-hours of electricity, which at 11 cents or so each costs $1.)


But how exactly did they get sheep to do this?


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