In this paper the results of research on the electrical conductivity of ethylene glycol during the Joule heating (or ohmic heating) based on Joule’s law under the HV electric field. At-tempts were made to heat the glycol without its flow in a stationary heater with plane parallel electrodes oriented horizontally. good price, good anticorrosion features, a relatively wide range of temperatures (from −40 to +150°C), low viscosity, a relatively high specific heat and thermal conductivity, as well as good mixing with water and alcohols cause the ethylene glycol to be widely used in practice [1–3].