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Abstract

This article presents the results of research on the importance of access to critical raw materials for the development of wind energy in Poland. The authors have built a set of factors that can potentially influence this development. Twenty-four explanatory variables were taken into account, which were assigned to five categories. The amount of demand for mineral resources related to the development of wind technology was determined using a computer programwritten by the authors. The importance of individual factors was verified using the ARMAX model. As a result of this, it was possible to identify the explanatory variables that significantly affect the volume of wind energy production in Poland. The group of mineral resources includes critical metals that are necessary for the production of wind turbines. These are rare earth elements, copper, nickel, boron and manganese. The ARMAX model enables the examination of the relationship between the explained variable and the explanatory variables. Optimization of the model parameters was performed by limiting the mean square error. During the validation of the model, the VIF (variance inflation factor), Dickey-Fuller and Doornik-Hansen tests were used. The ARMAX validation also consisted of selecting the model characterized by the lowest value of information criteria and determining ex post errors, including the mean absolute percentage error (MAPE). In addition, the nature of individual independent variables was determined, i.e. whether they were stimulants, nominants, or destimulants. The forecast made it possible to verify the possibility of meeting the assumptions of the Polish Energy Policy until 2040. It showed that if the development trends of the factors that affect wind energy do not change, it would be possible to meet the assumptions of PEP2040 regarding the dynamic development of wind farms in Poland and double the generation capacity by 2030. Analysis using the ARMAX model showed that access to raw materials such as REE, Cu, Ni, Br and Mn would have a very significant impact on the development of wind energy in Poland. Each factor of the raw material category that was introduced into the model was considered statistically significant at the significance level of α = 0.01, i.e. at the lowest acceptable risk of error. Therefore, the raw material base would be of key importance to ensure access to wind energy at the level adopted in PEP2040.
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Authors and Affiliations

Aurelia Rybak
1
ORCID: ORCID
Aleksandra Rybak
1
ORCID: ORCID

  1. Silesian University of Technology, Gliwice, Poland
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Abstract

This article presents research on the structure of energy mixes and the dependence on imports of the EU-27 member states, with a particular emphasis on Poland. During the conducted research, a spatial information system was used. GIS tools made it possible to build layers presenting information based on the countries’ energy mix, the level of dependence on the import of this fuel, and the share of the Russian Federation in fuel imports. It was also examined whether the level of dependence on imports from Russia was dependent on the geographical location. Since it has been shown that the share of Russian fuel is significant in the energy mixes of many member states, and that security does not depend solely on import dependence, an energy security assessment measure has been created (SES). As the level of security consists of many factors, assessing each of them separately is very difficult and unclear. Therefore, in order to simplify this analysis, it was necessary to determine one indicator that would take into account all the factors influencing the level of energy security. Poland is privileged in terms of access to fossil fuels due to its rich coal deposits; however, the potential of this fuel is not used, which is also indicated by the level of the SES measure. In the case of Poland, SES amounts to less than 16% and is almost three times lower than the EU-27 average. The indicator made it possible to indicate not only those factors that positively affect the level of energy security but also those that adversely affect it. It also enabled the identification of possible remedial measures.
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Authors and Affiliations

Aurelia Rybak
1
ORCID: ORCID
Aleksandra Rybak
1
ORCID: ORCID
Spas D. Kolev
2

  1. Silesian University of Technology, Gliwice, Poland
  2. School of Chemistry, The University of Melbourne, Australia

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