But the power plant consumes chemical energy at a rate of about 2500 MW, creating heat transfer to the surroundings at a rate of 1500 MW. (See Figure \PageIndex3.) Later in this text we will loo...But the power plant consumes chemical energy at a rate of about 2500 MW, creating heat transfer to the surroundings at a rate of 1500 MW. (See Figure \PageIndex3.) Later in this text we will look at the efficiency of energy transfers in greater detail and learn why they happen the way that they do.