Fuel cells offer a promising alternative to conventional fossil fuel power systems, due to their high efficiency, low environmental impact, and flexible application. Fuel cells are known for their reliability, power quality, eco-friendly nature, and fuel efficiency. Its promising power technology and extremely significant in the near future. One of the suggested power systems for residential, automotive, and portable applications is the Solid Oxide Fuel Cell (SOFC). Solid oxide fuel cell (SOFC) power devices are at the core of complex and efficient energy conversion systems for distributed power generation. Such power systems are currently in various stages of development. These power plants of the future feature complicated configurations, because of the fuel cell demands for a complex balance of plant. The purpose of this project is to review a Theoretical design of one type of fuel cell -Solid Oxide Fuel Cell (SOFC) -that can produce 1000 watt as electrical power. The type of Solid Oxide Fuel Cell (SOFC) is planar with anode supported that consists of electrolyte, cathode current collector, and anode supported. Fuel cells are attractive for several applications; however, there are several barriers that must be overcome before they can become an alternative to internal combustion engines.