Tightening environmental requirements and cheaper operating costs have led to replacing diesel machinery with electrical drives. Common challenges in machinery electrification is the dependency on the close proximity of electric supply, and low energy density and high prices of batteries. This master’s thesis studies the prerequisites of implementing high power charging infrastructure and electrical machinery in harbor environment. For this thesis, two qualitative interviews were conducted to form a comprehension about harbor environments and operations. Additionally, certain factors - such as available charging power and time - that affect the implementation of electrical powertrains, were understood better.Using these interviews, generic models of harbor operations were developed to assess the impact of the factors. Using design criteria, that include machinery power, operating time, yearly operating hours, battery energy content, and cycle duration, two total cost of ownership models were created for baseline cases of opportunity and depot charging concepts, and the results were compared to the cost of similar diesel machinery. The effect of the design criteria to the total cost - with other factors such as battery and infrastructure cost - was studied using sensitivity analysis, while recognizing key cost factors.Based on the models, it was found that opportunity charging is a technically feasible method to implement in harbors, while being financially profitable. The key factors for the opportunity charging concept are yearly usage, fleet size, and electricity price. The key factors for the depot charging concept are the unit cost of kWh for batteries, and battery lifetime. There is more uncertainty about the feasibility of the depot charging concept due to the large size and high cost of the battery. Also the total cost of ownership of the concept is very close to that of the diesel machinery.
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