AC is used in our power plants nowadays.
nuclear power plants
Alternating current is produced by generators or power plants that use magnetic fields to induce voltage and generate electricity. This type of current changes direction periodically, typically in a sinusoidal waveform.
The large power plants like power stations have turbo-generators (generators driven by turbines) within them. Steam is made by various means depending on the type of power station (nuclear, coal, oil, gas) and this under pressure drives the turbines. They in turn drive the generators (these are normally known as alternators in power stations because they produce alternating current). Smaller power plants such as a portable one that you can carry around are normally powered by a petrol engine, but this engine drives a generator producing either alternating or direct current depending on type.
Direct current
the ones that put out power
Alternating current
AC, alternating current is used to power electrical outlets in the U.S..
Alternating current (AC) electricity is the most commonly used type of electricity today. It is used to power homes and businesses because it is more efficient for long-distance transmission and can easily be converted to different voltages.
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The word "today" is an adverb that indicates the current day or period of time.
Coal power plants are the largest source of power in Michigan.
Nuclear power plants (BWR, PWR, AGR, etc.)