The path to zero: F-gas-free power transmission
Due to their special chemical characteristics, man-made fluorinated gases (F-gases), such as sulfur hexafluoride (SF 6), are widely used in the electricity sector and are the standard insulation solution in most substations. However, these F-gases come with a downside: as greenhouse gases (GHG) they are harmful to the environment. SF 6 , for example, is around 25,200 times more harmful to the climate than CO 2.
Grid operators worldwide are searching for environmentally friendly methods of power transmission to minimize CO 2 emissions and to meet net-zero target goals. Furthermore, in various parts of the world new F-gas regulations are expected to restrict the use of F-gases in future. With its zero-F-gas Blue portfolio of high-voltage gas-insulated switchgear, circuit breakers and instrument transformers, Siemens Energy offers a future-proof and environmentally friendly alternative. Through the innovative combination of vacuum switching technology and clean air insulation, Blue switchgear use purified air as insulation medium instead of F-gases, which have been proven to pollute the environment and cause damage to health. Clean air consists of 80 percent nitrogen and 20 percent oxygen, both natural elements in the surrounding atmosphere. This means that every Blue product has a Global Warming Potential (GWP) of zero.
For Siemens Energy to classify a product as “Blue”, it must meet a series of strict environmental protection and sustainability requirements. Since they use zero F-gases or other greenhouse gases, the Blue portfolio products are non-toxic, non-hazardous and require no special safety systems. This not only makes them easier to handle but means that the mandatory reporting of F-gas usage is avoided. In addition, the portfolio requires virtually zero maintenance, which means even lower costs during its life cycle. Siemens Energy Blue products guarantee absolutely zero CO 2 equivalent emissions over the operational lifecycle of the equipment - and they are easy to recycle, serving the cause of sustainability even after they have been decommissioned.
For more information about the criteria to classify a product as Blue, please visit our Blue Portfolio website: