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Conservation Chronometrics Controversy

Posted November 21, 2008 8:21 AM

More daylight hours should mean less energy used for lighting, and this is the conservation pretext underlying Daylight Savings Time (DST) as practiced in 76 nations. But a recent in-depth statistical analysis of residential electricity consumption conducted by the University of California Energy Institute shows DST caused electrical demand to rise almost 1% annually overall. The culprit is likely a trade-off between reduced demand for lighting and increased demand for heating/cooling, an effect that could translate into billions of dollars a year spent on unnecessary energy consumption worldwide. Should we fall back on natural time and seize this opportunity to conserve?

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Guru
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Join Date: Dec 2006
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#1

Re: Conservation Chronometrics Controversy

11/22/2008 9:21 PM

Since peak electrical consumption generally does not coincide with peak lighting needs (at least in warmer climates), but rather with cooling load demands, it would seem that an enforced siesta between, say 2 PM and 5 PM, while extending the working day to later hours of darkness, would most likely be more effective than trying to shift demand of the lighting load. I'm not sure what to do about cold climates, where peak heating demand generally will coincide with low liighting demand- since people are already sleeping then...

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Power-User

Join Date: Aug 2008
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#2

Re: Conservation Chronometrics Controversy

11/23/2008 8:01 PM

Has anyone calculated dollar cost dealing with scheduling , computing and sleep disorders related to switching times? You should have seen some of the havoc generated by changing those dates!

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