On 2013-11-18 22:24, William "Chops" Westfield wrote: > On Nov 15, 2013, at 1:55 PM, RussellMc wrote: > >> a tea light would provide perhaps 500 Watt-hours > > Sounds about right (order of magnitude-wise.) Another source I found > said that an average candle puts out about 80W, and a tea light > probably burns for a couple of hours (?) Note that electricity in=20 > the > US is about $0.20/kWh, so if the tea-lights cost $0.04 each (as some > articles claim), the costs are going to be pretty comparable as well. > > It's fascinating (in a not so good way) that there are all these > efforts (like Russell's) to replace "dirty and dangerous" fuels like > kerosene in 3rd world countries, and now we have first-world efforts > to bring them back :-( > > BillW Do note that the cost of electricity across the US varies considerably.=20 Here in the Seattle, WA area it is about $0.09/kWh for residential=20 customers. -Pete --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .