Energy consumption varies greatly depending on the ambient temperature and dehydrator temperature:
In an unfavourable case (cool, humid room air and maximum dehydrating temperature), a dehydrator works on average at around 80 % of its maximum output; the heating element is then, for example, on for around 50 minutes and off for only around 10 minutes per hour. This results in an energy consumption of 0.8 hours multiplied by the maximum power = consumption in k/Wh. (Example: at 600 W maximum power, this corresponds to around 0.48 kW/h)
In the most favourable case (warm, dry room air and low dehydrating temperature), the heating element of a dehydrator only has to work for a few minutes per hour. This results in an energy consumption of bswp. 0.1 hours times the maximum power = consumption in k/Wh (at 600 W maximum power this corresponds to 0.1 kW/h)