Siemens Energy and Traverse City Light and Power (TCL&P) have installed the first Blue Clean Air 72.5 kV CPV2V Circuit Switcher that utilizes clean dry air in place of SF6. It was built at the Siemens Energy plant in Richland, Mississippi, and commissioned at TCL&P in October 2020. It is the first circuit switcher in the United States to provide reliable short-circuit interruption without adversely impacting the environment.

Some key benefits of this Clean Air Circuit Switcher include:
• Blue Clean Air Circuit Switcher eliminates GHG emissions, thus contributing positively to the decarbonization of energy.
• Advanced current interrupting capability prolongs the lifespan of the technology over 5 times longer than conventional SF6 circuit switchers, resulting in 40% lower lifecycle cost.
• System is virtually maintenance free with higher reliability in extreme cold conditions (designed to reliably operate in conditions as low as -50° C).

TCL&P is a publicly-owned utility facilitating more than 12,700 customers in Traverse City, Michigan, as well as parts of East Bay, Elmwood, Garfield and Peninsula townships. It has adopted renewable generation sourcing goals of 40% by 2020, and 100% by 2040. Link to the news: https://assets.siemens-energy.com/siemens/assets/api/uuid:a8d6d555-d9fd-4890-8b51-2951839c9474/Blue-72.5-KV-Circuit-Switcher.pdf