Chugach Electric Association (Chugach) is the largest electric utility in Alaska and is headquartered in Anchorage, AK. The Panel “P” Arc Flash Reductions project was located at the International Substation (INSS), south of the Chugach main office building. The substation operates at 34.5kV and has two black start turbine generators. Panel “P” was the de facto Main Distribution Panelboard (MDP) providing 480V power to the substation and had an unacceptably high arc flash value. To increase worker safety, Chugach hired Taku Engineering to assess the system and design improvements.