Metal Plate, Electrochemical Element, Electrochemical Module, Electrochemical Device, Energy System, Solid Oxide Fuel Cell, and Method for Manufacturing Metal Plate

Provided are a metal plate configured such that sufficient strength and performance are ensured and the workability and cost of mass production are improved, and an electrochemical element and the like including the metal plate. A metal plate includes a thick portion and a thin portion that is thinner than the thick portion The thin portion is provided with a penetration space 1passing through the thin portion in the thickness direction.