In this work a new type of fuel cell is investigated. Using the newest studies in matter made by the SAFCell®, Inc. with the support of the University of Pasadena, in California, a real case study is analysed. The work shows an overview about the current type of existing fuel cell. After it moves through several theoretical studies to discover the nature of the solid acid, a new type of material used to realize the electrolyte of a new kind of fuel cell, called Solid Acid Fuel Cell (or SAFC). The evaluated application is electrical power generation for an isolated house, as a mountain chalet.