The growth and development of plants directly depends on watering them with aqueous solutions containing a sufficient amount of trace elements. In the article, the authors propose an efficient power source for an electrical installation designed for aqueous solutions. This installation allows you to increase nutrients and stimulates their assimilation by plants. For this setup, the authors propose to use a voltage source based on a multifunctional integrated element. The article presents a power supply diagram of an electrical technological installation based on a two-section single design and technological component. The power supply based on the presented component will allow the voltage to be varied over a wide range and will greatly reduce the weight and dimensions of existing installations. One of the sections of the multifunctional component will be used as a transformer and the other as a capacitor.