Resumen
Fuel changing is directly linked to market movements of energy sources, consequently, large companies adapt to these changes and move towards economically worthwhile strategies. The appearance of an energy source, change or fuel production startup, is a complex investment project in the field of industrial energetics. This research paper brings a case study of transition from gas to solid fuel in the paper factory, where the factory achieved significant savings by changing the basic fuel. In this study we applied a large number of criteria and parameters of the project management concepts (such as WBS structure, Gantt chart, SWOT analysis, criteria for settlement date, etc.). The purpose of this study is to demonstrate and broaden the knowledge base of in the industrial and energy sectors and to show significant benefits and cost savings which occur as a result of changes of energy sources in the industry involving mass production processes.