Please use another Browser

It looks like you are using a browser that is not fully supported. Please note that there might be constraints on site display and usability. For the best experience we suggest that you download the newest version of a supported browser:

Internet Explorer, Chrome Browser, Firefox Browser, Safari Browser

Continue with the current browser

Sustainability - the only way for a better future: the planned new F-gas regulation supports our vision 

On 5th of April 2022, the European Commission has released a legislative proposal to update the 2014 F-gas Regulation in order to more tightly control fluorinated greenhouse gases (F-gases). Sulfur hexafluoride (SF6) is one of these gases. It has been used for more than 35 years in electricity transmission and distribution equipment as a switching and insulating gas. However, SF6 is the most potent greenhouse gas, with a warming potential 25,200 times higher than carbon dioxide (CO2) and an atmospheric residence of up to 3,200 years. Siemens welcomes the Commission’s proposal. As one of the leading manufacturers Siemens has already developed F-gas-free alternatives, using Clean Air (natural origin gases) for gas-insulated switchgears. While also using proven vacuum switching technology, it’s possible to replace SF6 as an insulating and switching gas with a completely fluorinate free gas, thus avoiding any possible impact on environment and health.  
“At Siemens, we are already able to provide SF6-free gas insulated switchgears (GIS) up to 24 kV without the use of fluorinated gases, while not having to compromise on safety, availability, lifecycle costs, and size,” said Stephan May, CEO of the Electrification & Automation Business Unit at Siemens Smart Infrastructure. “The only sensible solution to replace SF6 in medium-voltage switchgears, is the use of natural-origin components of the ambient air. As the average lifetime expectancy of these electrical products is in the range of 35 years, changing directly to Clean Air is the most future-proof solution to comply with all possible upcoming environmental regulations. 
Siemens’ environment and climate-friendly gas-insulated switchgears (GIS), branded “blue GIS”, are fully replacing SF6 with an insulating gas containing gases of natural origin (Clean Air). Clean Air consists of natural components of the ambient air and is therefore not only free of F-gases, but also harmless, extremely stable, non-toxic, non-flammable, and suitable for all operating temperatures. It has a global warming potential (GWP) < 1 and can be released into the atmosphere at the end of its lifespan.
The ecological footprint of “blue GIS” products is lower than that of comparable conventional products. These new GIS designs meet the same high expectations of public and private grid operators for gas-insulated high-tech switchgears, as with current SF6 technology today. This applies particularly to functionality, personnel safety, health and environmental protection, long service life, maintenance-free operation, compact size, durability, recyclability, and cost-effectiveness over the entire lifecycle. According to the F-gas regulation draft, training, and reporting obligations with our “blue GIS” are obsolete. 
The Siemens “blue portfolio” already includes F-gas-free solutions for the 12 kV and 24 kV voltage levels. Siemens has solutions in service for both primary and secondary 12 kV gas-insulated systems, while the first 24 kV solutions are already deployed, and 40.5 kV versions are going to be introduced accordingly. In total, several thousand solutions are in the field. 
The “blue portfolio” makes it possible to modernize and expand existing power grids at the highest levels of safety and simultaneously reduces the ecological footprint without compromising on performance or economic feasibility.
As the first existing SF6 switchgears are approaching end of life, Siemens will support its customers as a reliable partner during the decommissioning and replacement, along with a proven disposal process and related services.  
According to the EU Commission, at EU level, F-gases currently account for 2.5% of total greenhouse gas emissions. The strengthened F-gas proposal is intended to save the equivalent of 40 million tons of CO2 emissions by 2030, beyond the expected reduction under current legislation, reaching total additional savings equivalent to 310 million tons of CO2 by 2050.
For more information about Siemens Smart Infrastructure, see

For more information about our blue GIS medium-voltage switchgear, see   

For more information on the F-gas regulation proposal, see

For this press release

Follow us on Twitter

Siemens AG (Berlin and Munich) is a technology company focused on industry, infrastructure, transport, and healthcare. From more resource-efficient factories, resilient supply chains, and smarter buildings and grids, to cleaner and more comfortable transportation as well as advanced healthcare, the company creates technology with purpose adding real value for customers. By combining the real and the digital worlds, Siemens empowers its customers to transform their industries and markets, helping them to transform the everyday for billions of people. Siemens also owns a majority stake in the publicly listed company Siemens Healthineers, a globally leading medical technology provider shaping the future of healthcare. In addition, Siemens holds a minority stake in Siemens Energy, a global leader in the transmission and generation of electrical power.
In fiscal 2021, which ended on September 30, 2021, the Siemens Group generated revenue of €62.3 billion and net income of €6.7 billion. As of September 30, 2021, the company had around 303,000 employees worldwide. Further information is available on the Internet at
Read more
Siemens Smart Infrastructure (SI) is shaping the market for intelligent, adaptive infrastructure for today and the future. It addresses the pressing challenges of urbanization and climate change by connecting energy systems, buildings and industries. SI provides customers with a comprehensive end-to-end portfolio from a single source – with products, systems, solutions and services from the point of power generation all the way to consumption. With an increasingly digitalized ecosystem, it helps customers thrive and communities progress while contributing toward protecting the planet. Siemens Smart Infrastructure has its global headquarters in Zug, Switzerland. As of September 30, 2021, the business had around 70,400 employees worldwide.
Read more


Christian S. Wilson

Siemens AG

+49 172 138 5608