LED_incan_cfl_worksheet2.ods(file size: 32 KB, MIME type: application/vnd.oasis.opendocument.spreadsheet)

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This Open Office worksheet is a quick tool for doing the engineering economics of incandescent, CFL and LEDs of the ~ same light output. I erred on the conservative - e.g. the LED will output more light. Most spaces are over lit - so you can probably get away with less. As you can see the return on investment for moving to LEDs is substantial in most applications.

Please note that the ROI calculation is an approximate - based only on payback time and does not take into account the lifetime. To do it correctly see information here: [1]

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Created Unknown date by Unknown author
Uploaded October 17, 2011 by Joshua M. Pearce
License GFDL

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current19:11, 17 October 2011 (32 KB)J.M.Pearce (talk | contribs)
revert15:51, 17 October 2011 (32 KB)J.M.Pearce (talk | contribs)This [http://www.openoffice.org/ Open Office] worksheet is a quick tool for doing the engineering economics of incandescent, CFL and LEDs of the ~ same light output. I erred on the conservative - e.g. the LED will output more light. Most spaces are over l
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