Evening Republican, Volume 21, Number 147, Rensselaer, Jasper County, 9 July 1917 — Candles Vs. Electricity. [ARTICLE]

Candles Vs. Electricity.

The Society for Electrical Development, anxious to encourage a wider use of electricity for lighting, has prepared figures showing it is much cheaper than candles or kerosene. A recent test of six candles showed that for 1 cent only 2.68 candle-power hours were obtained. If electricity for lighting costs 9 cents for a kilowatt hour a 20-watt lamp can be lighted for 50 hours for 9 cents. The efficiency of a 20-watt incandescent is a candlepower for 1.17 watts. Thus a 20-watt lamp will provide about 17 candle power. It will burn 50 hours for 9 cents, or 850 candle-power hours will cost 9; cents. One cent will buy 94.4 candle-power hours, or 35 times as much light as can be obtained from a candle for 1 cent.