Intelligent devices for the accumulation and management of electricity consumption for developing regions, ensuring their self-organization into a balanced microgrid with a fair distribution of energy resources. Intelligent energy storage and energy management devices are a low-cost product designed for end users in developing regions with electricity shortages. The developed device incorporates an energy storage device (battery) and an intelligent control system. In addition, intelligent devices for the accumulation and management of energy consumption provide the ability to connect solar panels, wind generators, small hydro generators and generators for fossil fuels, as well as connecting to a centralized power supply network, if available. Thanks to an intelligent control system, the developed device studies user behavior and, using weather forecasts to predict renewable energy generation volumes, manages energy consumption in such a way as to provide economical continuous reliable power supply to important power-consuming user devices. Also, thanks to the intelligent control system, the developed devices can be interconnected with electric cables in random order. The devices automatically recognize each other and self-organize into a balanced microgrid so that excess electricity in one device of one consumer can be transferred to another device of another consumer, providing a fair rational, economically feasible redistribution of energy resources. The redistribution of energy resources of consumers is recorded in blockchain and is used to account for the amount of electricity transmitted between users. Two types of control and management of electricity flows are supported: with monetary compensation and without monetary compensation. If one of the users has increased consumption and there is no way to compensate for it at the expense of money, then in this case, compensation occurs due to the provision of so-called system services during peak hours by reducing their power consumption and issuing accumulated electricity to the network. In the second case, if the consumer has the opportunity to pay for electricity, then he pays for additional amounts of energy from his own money in addition to purchasing the developed device. The use of developed intelligent devices allows to organize power supply in developing countries, making only initial capital costs without the need to pay for electricity consumed in the future and without the cost of services of network companies and system operators.