It would have been nice if the article's author had provided a short technical explanation of kilowatt-hour. A kilowatt-hour is a unit of energy, and energy is

It would have been nice if the article's author had provided a short technical explanation of kilowatt-hour. A kilowatt-hour is a unit of energy, and energy is the time integral of power. It follows that energy in kilowatt-hours is the time integral of power expressed in kilowatts, i.e. one watt for a thousand hours, a thousand watts for one hour, and so forth. I think that's pretty accessible and could only add to the article's value by answering the question, "What does 'kilowatt-hour' mean?"