I am not very clear about this statement. Does that mean in every second we are consuming that much energy?
A watt is a unit of power, not energy. Power is energy per unit time. Every second we use on average 14 trillion joules of energy. A joule per second is a watt.
By the way, when you divide 14 trillion watts by the roughly 7 billion humans on Earth, each human uses about 2,000 watts as a continuous average. This is an easily grasped number. (For example, one bright pre-LED light bulb continuously consumed 100 watts.)