The submitted academic work contains two common subjects of entrepreneurial energy supply management. The first part encloses the accounting of electrical power supply methan, and process water usage at Stahl Judenburg GmbH. The accounting results are illustrated at Sankey-Diagramms. Part two of the academic work investigate technical possibilities for a concept to regain energy from compressor cooling air. The developed project will be economicaly verified to reassess the profit for the company.