A watt is a unit of power or how much energy was produced in a certain time (one watt equals one joule per second). A megawatt is 106 watts.

A megawatt is one million watts or one thousand kilowatts, a measure of electrical power or generating capacity. A megawatt will typically serve about 1,000 people. The Dalles Dam produces an average of about 1,000 megawatts.

Standard measure of electrical power. One megawatt equals one million watts or a thousand kilowatts.