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The importance of Optimal Design of a PV System in the Net-Metering Model: A Case Study for Croatia

The world’s demand for electrical energy is increasing rapidly while the use of fossil fuels is getting limited more and more by energy policies and the need for reducing the impact of climate change. New sources of energy are required to fulfill the world’s demand for electricity and they are currently found in renewable sources of energy, especially in solar and wind power. Furthermore, bringing the energy production closer to the final consumer and spending the electricity directly on the load site has a magnitude of benefits, of which ones to highlight are financial viability, higher degree of energy independence and lower technical strain to the existing infrastructure. Choosing the optimal nominal parameters of the household/rooftop solar PV system minimizes the unnecessary surplus of electrical energy that is exported to the grid and thus utilizing the supporting net-metering scheme to its maximum. Oversizing the PV system according to the Croatian net-metering model results in switching the calculation of the costs to the prosumer model which results in a decrease of the project’s net present value (NPV) and an increase in the payback period (PP). This paper give an overview on the usage of the optimization problem for determining the optimal nominal power of a grid-connected PV system that was formed in a easy to use tool. The case study for Croatia using multiple scenarios in the variability of electricity production and consumption corresponding to a typical annual high-tariff consumption in Croatian households are used. Furthermore, the statistical analysis of the data from the optimization tools outputs is presented and the broader social impact on the usage of this software was assessed.

Info

Day: 2023-09-01
Start time: 12:00
Duration: 00:15
Room: ZV-KC-1
Type: Paper Presentation
Theme: Transformational climate politics (METAR)

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