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Comment Re:ROI (Score 1) 710

The bulb in TFA (I know, I know... but it wasn't in TFS) is rated 6.9w consumption, and is presumably the 60w-equivalent referenced in the summary. Most "60w" CFLs take around 12-15w if memory serves - so these LED bulbs are about twice as efficient. Save $23/yr for 19 years vs $12/yr for 5 years

If the consumption of a LED is half the consumption of a CFL, that doesn't mean you save twice as much per year. In the CFL case you save 45-50W-worth relative to an incandescent bulb and in the LED case you save 53.1W-worth. So you only save slightly more per year by using LED instead of CFL in terms of electricity consumption.

There is never time to do it right, but always time to do it over.