The increasing popularity of eco-friendly gas-insulated switchgear is accelerating the green transformation of power equipment.
Jun 27,2025
**Industry News: The Increasing Popularity of Eco-Friendly Gas-Insulated Ring Main Units (RMUs) Drives the Green Transformation of Power Equipment**
In recent years, driven by the global "dual carbon" goals and the urgent need for environmentally friendly technologies in the power industry, **eco-friendly gas-insulated ring main units (RMUs)** are gradually replacing traditional SF₆ gas-insulated equipment, becoming an important development direction in the power distribution field.
**Policy Drives, Market Accelerates Transformation**
The National Development and Reform Commission, the National Energy Administration, and other departments have successively issued policies encouraging the use of environmentally friendly power equipment to reduce greenhouse gas emissions. The "Implementation Plan for Green and Low-Carbon Advanced Technology Demonstration Projects" issued in 2023 clearly proposes the promotion of SF₆-free, environmentally friendly gas-insulated switchgear. Against this backdrop, many domestic power equipment manufacturers have increased their R&D efforts, launching RMUs using dry air, nitrogen, or mixed gases as insulation media. Their GWP (Global Warming Potential) is close to zero, and they have excellent insulation and arc-extinguishing performance.
**Technological Breakthroughs, Performance Comparable to Traditional Equipment**
In the past, eco-friendly gas-insulated equipment was slightly inferior to SF₆ products in terms of arc-extinguishing capability and compactness. However, in recent years, through optimized design, the use of new materials, and pressure regulation technology, the new generation of eco-friendly RMUs has achieved the same or even higher reliability. For example, products launched by some manufacturers have passed rigorous type tests and can adapt to extreme environments from -40℃ to +70℃, meeting the diverse needs of urban power grids, new energy power stations, and other scenarios.
**Strong Market Demand, Accelerated Corporate Layout**
According to industry statistics, the market size of eco-friendly gas RMUs in China in 2023 increased by more than 40% year-on-year, and is expected to exceed 5 billion yuan in 2025. State Grid Corporation of China and China Southern Power Grid have piloted applications in several provinces and cities and plan to gradually increase their procurement ratio in the next three years. At the same time, domestic and foreign companies such as ABB, Siemens, Pin Gao, and Xujie are accelerating their layout, promoting the industry's development towards green and intelligent development.
**Future Outlook: Standardization and Internationalization**
Experts point out that the promotion of eco-friendly gas-insulated RMUs still needs to address issues such as cost optimization and standardization. Currently, relevant national standards and industry specifications are being formulated, and it is expected that they will be aligned with international standards in the future, helping China's power equipment to "go global." With technological advancements and large-scale applications, eco-friendly RMUs may become standard equipment for smart power grid construction, providing a Chinese solution for global energy decarbonization.
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