Waldemar Petersen invented the Petersen Coil

Swedish Neutral AB was founded in Kungsängen, Sweden

The first ever GFN was commissioned on the island of Gotland, Sweden

The 2009 Victorian Bushfires Royal Commission (VBRC) found that some of the most devastating fires on Black Saturday were ignited by faulted powerlines.
In response to the recommendations of the VBRC the Victorian Government established the Powerline Bushfire Safety Taskforce (PBST).

The Powerline Bushfire Safety Taskforce gives it's Final Report, recommending REFCL:s to be installed in power grids of Victoria, Australia

The first GFN commissioned in the USA

Swedish Neutral is given the 2021 Edison Silver Award by Critical Human Infrastructure for it's work with Ground Fault Neutralizer (REFCL)