Being as to how the average power plant is probably 500mw/hr and their unit auxillary usage is 20+/mw/hr somebody is off a few decimals.
Please see post 27 :-)
Wait a minute. Power is 'watts' or 'joules/second'. Energy is 'watt seconds or hours'. That's power x time. The unit mw/hr would read 'milliwatts per hour', which is not correct at all. The joule is the unit for energy. A joule/s is a watt.
Electrical generating plants are usually rated in 'megawatts' or 'MW' with a capital M. This is power. Power is only the time RATE at which electical energy is produced/used. You don't buy 'power', you buy 'energy'. Energy is measured in watts times time, or 'watt hours'. This is sometimes written as 'watt-hours' but then some folks think the dash is a minus sign, which it isn't.
A 100 Watt light bulb isn't more 'powerful' than a 60 watt bulb. Things can't 'have' power. They can only 'use' energy at higher or lower rates. 100 Watts means the bulb uses energy at the rate of 100 joules per second. Every second it is on, it uses 100 joules. In one hour, it uses 360 000 joules of energy.
"mw/hr" should be "mw".