As most of today’s aquaculture plants located off the power grid are being powered by diesel generator, NVES wants to investigate the opportunity of powering aquaculture plants by using a wind-diesel hybrid system with a battery storage. The main objective is to reduce emissions and contribute to making the aquaculture industry environmental friendly by utilizing the excellent wind conditions along the Norwegian coastline. As a basis, the thesis uses Nekton Havbruk’s plant at Gjelsøya as an example.
Based upon the analysis of the wind and energy data, four different proposed systems were simulated in a MATLAB® environment to determine the impact of the different components on performance and profitability. These simulations indicated that a wind-diesel hybrid system with battery storage was not a viable solution for an aquaculture plant at the same size as the one at Gjelsøya. However, the hybrid systems turned out to be a viable solution to cut the emissions with approximately 50% for larger plants if the systems were designed with a renewable penetration of 50-60%, given that the plant is operating 15 years or longer.
As the aquaculture industry is growing, it’s crucial to reduce its emissions to protect the wild life along the Norwegian coastline as well as contribute to meet Norway’s total share of emissions in reference to the Paris agreement. Should Norway be able to comply with the agreement, an important policy instrument is to remove the subsidies on the marine diesel used by the aquaculture industry to increase the interest in hybrid power solutions.
To further investigate the possibilities of a wind-diesel hybrid-based power solution, a small/full-scale should be initiated.
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