This thesis has been written for the Bachelor degree in Electrical Engineering held at Blekinge Tekniska Högskola Karlskrona, Sweden. The basis of this thesis is a statistical analysis of the electrical energy situation with emphasis on contribution of wind power and other renewable energy in electricity production in the European area and key countries.   The main parameters, which considered in this thesis are electricity production and consumption, installed capacity trends and also the operation of renewable sources, especially wind power in gross electricity generation. Meanwhile, the whole date and materials are based on real values and investigated from the latest publications of governments and energy agencies of European union and key countries.   The target of European renewable energy is that the member countries must achieve at least 20 percent of final energy consumption from renewable energy by 2020. Germany, United Kingdom, Spain and France and Portugal are members of the highest consumers of electricity in the Europe and still the main source of electrical production in these countries are fossil fuels, the main challenge is that they should start to shutting down the traditional power plant and improve the infrastructure for installing the renewable electrical capacity instead.   According to the statistics, many of the European countries such as United Kingdom, Germany, Spain, Denmark and Sweden have started up to use the renewable energy to produce the electrical energy, but their governments have special keen eye for investment in the wind energy sector. Wind power grew sharply during the past decades in Europe and becoming vital every coming day in comparison to other renewable energy, since the low cost of electricity can be granted through a small investment and relies on the wind blowing compared to the conventional electricity generation sources. The diagrams demonstrate the wind power has a main portion to producing the electrical energy and every year a considerable amount of installed capacity is added to the total electrical grid.   In addition, the expansion of renewable energy  to achieve the high percent of electrical production requires  the improvement of  infrastructure such as ecological research and high coordination between different organizations. Also, the electrical generation cannot be constant, and in winter the overall consumption and demand for electricity increases all over Europe. The exploitation of some renewable sources such as solar and wind power for electrical production can have fluctuation due to the weather condition and wind speed, which can affect the overall generation to the electrical grid.   Therefore, the balancing of several renewable sources in different seasons,  needs the unique power management for reliable electrical production. In this trend, Norway is a successful country in Europe that uses over 90 percent of  renewable sources for total electrical generation. The thesis has covered these challenges and how they are overcoming these issues.

The global solar PV market is growing fast, and so is the production and trade with photovoltaic products and peripherals. Until now, the largest development has taken place in highly developed and electrified countries with good administrative control over their electricity system. Recently, however, new markets in developing countries have become increasingly relevant in terms of market share, system sizes and installed capacities. Statistics from these types of countries are often weak or non-existent, leading to problems for global organizations such as the International Energy Agency (IEA) or the International Renewable Energy Agency (IRENA), whose task is to follow, analyze and document named development.  In this report, a method is presented in which customs data monitored by the ‘Market Analysis and Research’ section of the International Trade Centre, an agency of UN’s World Trade Organization, is analyzed and converted into annual installed PV capacity volumes. By complementing the basic data from the customs database with price statistics from IEA PVPS task 1 along with national module production data from IEA PVPS task 1 and the RTS cooperation a data conversion is executed.  The method has been improved incrementally, where different assumptions have been modified or added, so that the data conversion of exported and imported PV products, expressed in dollar per yearly quarter, match the official statistics of annual installed capacity for a number of reference countries with comprehensive PV capacity statistics. The sensitivity analysis shows that the method is sensitive to the accuracy of the annual domestic national PV module production data and to price changes of Chinese PV modules. For countries with accurate PV module production data, or countries with no module production, the method seems to be able to estimate the annual installed capacity in 2018 with an average difference of 21% and a maximum difference of ±38% and a total average difference of 12%, 17% and 11% for 2016, 2017 and 2018 respectively.  By implementing this method, an estimate on yearly installed capacities can be generated in all countries connected to the UN customs database and where the domestic module production is known. This gives the opportunity to at least get an assessment of how much PV that has been installed in developing countries that lack official statistics about their domestic PV market. The regions with the lowest existing data coverage in the world have been determined to be Africa and the Middle East. When applying the method on countries in Africa and the Middle East, larger capacities than the reference data were obtained.

Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2018-02-08T15:37:26Z No. of bitstreams: 1 Luciana Arenhart Menegat_.pdf: 2130171 bytes, checksum: 31939bf69f5ffaead6152b5d73c3171a (MD5) / Made available in DSpace on 2018-02-08T15:37:26Z (GMT). No. of bitstreams: 1 Luciana Arenhart Menegat_.pdf: 2130171 bytes, checksum: 31939bf69f5ffaead6152b5d73c3171a (MD5) Previous issue date: 2017-12-19 / Nenhuma / Na literatura, ocorre divergência quanto ao tipo de relação existente entre os investimentos públicos e privados, havendo estudos que indicam uma relação de crowding in e outros de crowding out, identificando-se uma lacuna nesses estudos e a necessidade de novas investigações que determinem essa relação. Assim, defende-se a tese de que os investimentos públicos possuem impacto positivo sobre os investimentos privados, tendo-se como objetivo geral identificar se existe interdependência entre os investimentos público federal e privado no Brasil. Para esse intento, analisam-se dados trimestrais entre 2002 e 2015, por meio de um Modelo VAR e VEC, que permite estabelecer relações de curto e longo prazos entre as variáveis. Dentre os modelos testados, o melhor deles se mostrou o composto por investimento privado, investimento público, taxa de câmbio e utilização da capacidade instalada, que permite o reconhecimento de que, a cada aumento de 1% no investimento público, deve ampliar-se, em média, 0,44% o investimento privado. Destaca-se que a valorização da taxa de câmbio produz um efeito negativo significativo sobre o investimento privado, no curto prazo, mas, no longo prazo, essa relação torna-se não significativa. Os demais resultados mantiveram os mesmos sinais das elasticidades no curto e no longo prazos, resultados semelhantes aos observados na literatura. Dessa forma, confirmam as hipóteses de pesquisa fundamentadas na função Keynesiana em relação às expectativas, à renda e à taxa de juros, para explicar o comportamento do investimento público e do privado, de modo que essas hipóteses comprovam a tese fundamental desta pesquisa e permitem atingir o objetivo geral. Em síntese, foi possível determinar uma relação positiva entre investimentos público e privado, embora essa relação tenha baixa elasticidade. Ou seja, o investimento público é significante para explicar o nível do investimento privado, mas não é a variável de maior impacto, que foi a utilização da capacidade instalada (indicando as expectativas e o nível de atividade). Além disso, os investimentos privados e públicos apresentaram um movimento conjunto, não sendo possível determinar uma relação de causalidade pelo Teste de Granger entre os investimentos públicos e os privados, nesta pesquisa. Essas situações possuem embasamento teórico, o que indica que é uma relação ainda não definida e que se sugere como pesquisa futura, ou seja, trabalhos que tentem definir o sentido da causalidade entre os investimentos privados e públicos. / In the literature, there is a divergence between the type of relationship between public and private investments, with studies indicating crowding in and others crowding out, identifying a gap in these studies and the need for further investigations that determine this relationship . Thus, it is defended the thesis that public investments have a positive impact on private investments, with the general objective of identifying if there is interdependence between public and private investments in Brazil. For this purpose, quarterly data are analyzed between 2002 and 2015, using a VAR and VEC Model, which allows establishing short- and long-term relationships between variables. Among the models tested, the best of them was composed of private investment, public investment, exchange rate and utilization of installed capacity, which allows the recognition that, with each 1% increase in public investment, on average, 0.44% of private investment. It should be emphasized that the appreciation of the exchange rate has a significant negative effect on private investment in the short term, but in the long run this relationship becomes insignificant. The other results maintained the same signs of elasticities in the short and long terms, results similar to those observed in the literature. Thus, they confirm the hypotheses of research based on the Keynesian function in relation to expectations, income and interest rate, to explain the behavior of public and private investment, so that these hypotheses prove the fundamental thesis of this research and allow to reach the overall goal. In summary, it was possible to determine a positive relation between public and private investments, although this relation has low elasticity. That is, public investment is significant to explain the level of private investment, but it is not the variable with the greatest impact, which was the use of installed capacity (indicating expectations and level of activity). In addition, private and public investments presented a joint movement, and it is not possible to determine a causal relationship by the Granger Test between public and private investments in this research. These situations have a theoretical basis, which indicates that it is a relationship not yet defined and that is suggested as future research, that is, works that try to define the sense of causality between private and public investments.