A statement of the amount made per kilowatt hour may be misleading, since a certain amount of loss is of necessity entailed during this process.
A 10-12% solution of sodium chloride is caused to flow upwards through the apparatus and to overflow into troughs, by which it is conveyed (if necessary through a cooling apparatus) back to the circulating pump. Such a plant has been reported as giving 0.229 gallon of a liquor containing I% of available chlorine per kilowatt hour, or 0.171 gallon per e.h.p. hour.
Ten 100-watt light bulbs use one kilowatt of electrical power.
A ton of paper manufactured from recycled paper can save about 4,000 kilowatt hours of energy.
The sun is a powerful energy source sending an estimated 174,423,000,000,000 kilowatt hours of energy to the Earth every hour.