Rockwill Electric g3 Eco-Friendly Gas-Insulated Equipment: A New Benchmark for 99 percent Carbon Reduction in High-Voltage Transmission
May 11, 2026 — Rockwill Electric announced today that its full range of high-voltage electrical equipment has officially adopted g3 (Green Gas for Grid) eco-friendly insulating gas technology. This initiative marks a pivotal step for the company in replacing sulfur hexafluoride (SF6) and driving the low-carbon transformation of power grids, offering the electric power industry an innovative solution that combines superior environmental performance with reliable insulation capabilities.
99% Carbon Reduction, Stable Operation at -30°C
The core of the g3 technology applied by Rockwill Electric lies in using a mixture of C4F7N (C4-fluoronitrile) and carbon dioxide (CO2) to replace traditional SF6, which has a high Global Warming Potential (GWP). This technical solution achieves a breakthrough in environmental performance with a GWP reduction of over 99%, while also being non-ozone-depleting, significantly lowering its lifecycle environmental impact.
In terms of performance, Rockwill Electric's g3 equipment demonstrates three core advantages:
- Equivalent Insulation Performance: Maintains the same insulation level as SF6 equipment, ensuring grid operational reliability is not compromised.
- Extreme Cold Adaptability: Capable of stable operation at temperatures as low as -30°C, meeting diverse climatic needs across northern and southern regions.
- Safe and Non-Toxic Characteristics: The gas itself is non-toxic, making it more environmentally friendly and safer for operators, in line with modern power equipment safety standards.
SF6-free Dead Tank Circuit Breaker for 72.5 kV
Full Range of Eco-Friendly Products for Seamless Replacement
Based on g3 technology, Rockwill Electric has developed a product matrix covering core high-voltage transmission scenarios, including:
- Gas-Insulated Switchgear (GIS)
- Pass-type Insulated Gas Circuit Breaker (Hybrid-GIS)
- Dead Tank Circuit Breaker
- Live Tank Circuit Breaker
Maintaining Compatibility While Upgrading Sustainability
These products achieve a leap forward in environmental performance while maintaining identical rated parameters and installation dimensions to existing SF6 equipment. Whether for equipment upgrades or new projects, users can directly replace legacy units without modifying existing substation layouts. This seamless compatibility significantly reduces retrofitting costs and project timelines, while allowing clients to benefit from policy incentives and tax advantages associated with carbon emission reductions.
Domestic Technology Support: Fortifying Supply Chain Security
The application of g3 technology by Rockwill Electric deeply integrates the independent innovation capabilities of the domestic industrial chain. The localization of C4F7N (C4-fluoronitrile), the core component of g3 gas, has achieved milestone breakthroughs:
- Research & Development: Since 2013, the China Electric Power Research Institute has led joint efforts to develop green and efficient synthesis processes, achieving gas purity levels of 99.9%.
- Field Validation: In June 2023, the nation's first 550kV eco-friendly gas-insulated metal-enclosed transmission pipeline using C4-fluoronitrile was successfully commissioned in Anhui, validating the maturity of this technology in high-end equipment applications.
Rockwill Electric closely follows national strategic directives, transforming localized technologies into mature commercial products. This approach not only ensures supply chain security but also provides customers with cost-competitive green solutions.
Intelligent Monitoring for Worry-Free Operation
To ensure the long-term stable operation of g3 equipment, Rockwill Electric has developed a dedicated intelligent monitoring system. This system allows for real-time tracking of gas mixture ratios, humidity, and sealing status, promptly detecting and alerting operators to potential issues, thereby providing a dual layer of security for grid operations.
Leading the Future of Green Grids
"Rockwill Electric is always driven by technological innovation to power green development," stated the company's technical director. "The comprehensive application of g³ technology is not only a proactive response to the climate crisis but also a key practice in building a new type of power system. In the future, we will continue to deepen cooperation with industry partners to promote the standardization and large-scale implementation of eco-friendly gas technologies, contributing Chinese wisdom and solutions to the global energy transition."
Choosing Rockwill Electric’s g3 products means choosing a cleaner, safer, and more sustainable energy future. Let us work together to "remove greenhouse gases from the grid" and light up a green world
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