Annually, power plants in the United States spend upwards of $23 billion on corrosion-related repairs. Regulating humidity in a power plant serves a number of important purposes, most importantly worker comfort. When relative humidity reaches 90%, the human body doesn’t evaporate sweat, which can lead to heat illness and even fatal heatstroke. Additionally, power plants can easily prevent damage caused by corrosion, a direct result of high humidity levels. By preventing corrosion, the plant limits the need for down time to repair, reducing both maintenance costs and lost time.