Russia’s Parus Electro LLC, a subsidiary of the Rosatom Group, has developed a prototype of the country’s first Russian-made string inverter for solar power plants.
A string inverter is a device that converts the direct current generated by solar panels into alternating current for safe and efficient transmission through power grids to consumers.
The technology enhances energy generation stability during winter or cloudy conditions and increases the total number of generation hours throughout the day.
The newly developed inverter can operate across a wide temperature range, from –50°C to +65°C, and is capable of ensuring stable voltage even in remote areas. It is suitable for both large-scale, ground-mounted industrial solar plants and small rooftop solar installations.
The device supports adaptive reactive power management tailored to the requirements of specific grid operators and allows for integration with energy storage systems.
One of its key distinctions is its modular architecture, which enables the replacement of the power supply module without dismantling the entire system.
This design significantly reduces maintenance and repair time from several hours to just a few minutes, while also minimising energy generation losses.
The inverter has an efficiency rate of 98.3 percent and can operate with storage devices in grid-connected or hybrid modes, while withstanding diverse climatic conditions.
With more than 90 percent of its components sourced locally, Parus Electro plans to deploy production at its own facilities, with serial production expected to begin in 2026.
Russian companies continue to deliver development projects and pioneer innovative solutions for international partners. Notably, a reactor vessel produced by Rosatom has been installed at Unit 1 of the El-Dabaa Nuclear Power Plant in Egypt.
In addition, groundwork is underway for the construction of a 200-megawatt solar power plant in Mali with Rosatom’s support.
Furthermore, the first of four Russian test stands has already arrived at the construction site of the International Thermonuclear Experimental Reactor (ITER) in southern France.
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