Nyttiggörandet av intermittentenergi - interna och externa lösningar vid Siemens Energy, Finspång : Utveckling av ett systematiskt arbetssätt för utvärdering av tekniska lösningar

Sammanfattning: The transition to a sustainable future is one of the biggest, and most current challengestoday. It’s something that manifests, both political in terms of policies but also in theincreasing societal awereness regarding sustainability. The Paris agreement was adoptedin 2015 and aims to limit the global warming below 2 ◦C. Meanwhile large amounts of fossilfuels and raw materials are being consumed which furthers the issue. One way to limitits effect is to make use of the residual flows that’s being created. Unfortunally, it’s morecommon that theese residual flows are being released to the surroundings, often in the formof excess heat. One of the reasons for this originates in limited system boundaries whereactors solely focus on their own operation and do not explore the possibility of cooperationwith others actors. Previous research demonstrates that actors lack methods to evaluatepotential solutions with a systematical approach which leads to missed opportunities—especially for the utilization of underutilized resources—for energy efficiency. Thus thisMaster’s thesies aims to investigate the potential with excess energy and different waysactors can capitalize on it. Furthermore the study aims to present decision basis by applying a Multi-criteria analysis but also identify knowledge gaps connected to decisionmakingoverall and how the method can be used to reduce theese. This Master’s thesis was conducted through a case study at Siemens Energy in Finspång,Sweden, where a Multi-criteria analysis was applied on their intermittent energyflow ofelectricity stemming from gas turbine testing. A literature study was used to determinewhich potential solutions that would be included in the method while a interview studywith employees on the focal company gave rise to the indicators that were used to evaluatethe solutions. The result showed that four solutions, hydrogen production, district heatingproduction, battery park and Direct Air Capture all fulfilled the demands. The resultfurther indicated that all four solutions had their individual strengths and weaknessesconnected to the three sustainability aspects and therefore the best solution depends onwhich aspect is valued the most. From an economical standpoint, hydrogen roduction wasthe most attractive while Direct Air Capture and district heating production were mostfavourable in terms of ecological- and social profitability. Although battery park was notconsidered best in one particular area, the analysis highlighted the fact that it can facilitatea higher effectiveness from the other solutions if implemented. Therefore it is in this studyrecommended to investigate the possibility to implement a combination of these solutionsto maximize the benefit and whether it’s possible to do so in conjunction with other actors. It can be concluded that Multi-criteria analysis can be used to foster the utilization ofunderutilized resources by providing a systematical method for basis decision. To achievereal change though, it’s necessary that actors expand their system boundaries to includeresidual flows from other actors. Nevertheless, it must be underlined the importance thatevery actor strive individually to be the most sustainable they can be, only then can weachieve a sustainble future.