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Eficiência energética na PSP: análise da viabilidade económico-financeira da utilização de energias renováveis nas infraestruturas da PSP
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Abstract(s)
No que diz respeito ao consumo de energia elétrica, a Polícia de Segurança Pública tem-se
sustentado, maioritariamente, através dos tradicionais combustíveis fósseis, cujo consumo
acarreta vários problemas ambientais, sociais e económicos. Logo, decorrente da crescente
preocupação da sociedade com as questões ambientais e económicas, a Polícia de Segurança
Pública, enquanto Força de Segurança ao serviço do cidadão, deve procurar investir em
estratégias energéticas eficientes, tais como as energias renováveis, a fim de não só obter
uma redução de custos a médio/longo prazo, mas também de cuidar da sua imagem e ser um
exemplo a seguir. Neste sentido, tornou-se pertinente estudar a viabilidade económico financeira do investimento e da utilização de energias renováveis nas infraestruturas desta
Polícia, com recurso a quatro indicadores financeiros: payback, retorno sobre o
investimento, valor atual líquido e taxa interna de rendibilidade. Dentro das diversas fontes
de energias renováveis existentes, a que melhor se adequou a este estudo foi a energia solar
fotovoltaica, em regime de unidades de produção para autoconsumo, visto ser a que
apresenta mais vantagens em termos de investimento a médio/longo prazo. Após a análise
dos resultados obtidos, designadamente em dez edifícios de diferentes dimensões e regiões
de Portugal Continental, de forma a permitir a generalização dos resultados, concluiu-se que
todos os investimentos estimados são viáveis económico-financeiramente, apresentando, no
caso de um investimento conjunto, um payback inferior a 6 anos, um retorno sobre o
investimento superior a 340%, um valor atual líquido superior a 200 000,00€ e uma taxa
interna de rendibilidade superior a 17%.
When it comes to the consumption of electricity, the Polícia de Segurança Pública has mostly supported itself through traditional fossil fuels, whose consumption causes various environmental, social, and economic problems. Therefore, because of society's growing concern with environmental and economic issues, the Polícia de Segurança Pública, as a Security Force at the service of the citizen, must seek to invest in efficient energy strategies, such as renewable energies, in order not only to obtain a cost reduction in the medium/long term, but also to take care of their image and be an example to follow. In this sense, it became relevant to study the economic and financial viability of investing and using renewable energies in the infrastructures of this Police, using four financial indicators: payback, return on investment, net present value and internal rate of return. Among the various existing renewable energy sources, the one that best suited this study was photovoltaic solar energy, in production units for self-consumption regime, since it presents the most advantages in terms of medium/long term investment. After analysing the results obtained, namely in ten buildings of different dimensions and regions of mainland Portugal, in order to allow the generalization of results, it was concluded that all the estimated investments are economically and financially viable, presenting, in the case of a joint investment, a payback period of less than 6 years, a return on investment of more than 340%, a net present value of more than €200,000.00 and an internal rate of return greater than 17%.
When it comes to the consumption of electricity, the Polícia de Segurança Pública has mostly supported itself through traditional fossil fuels, whose consumption causes various environmental, social, and economic problems. Therefore, because of society's growing concern with environmental and economic issues, the Polícia de Segurança Pública, as a Security Force at the service of the citizen, must seek to invest in efficient energy strategies, such as renewable energies, in order not only to obtain a cost reduction in the medium/long term, but also to take care of their image and be an example to follow. In this sense, it became relevant to study the economic and financial viability of investing and using renewable energies in the infrastructures of this Police, using four financial indicators: payback, return on investment, net present value and internal rate of return. Among the various existing renewable energy sources, the one that best suited this study was photovoltaic solar energy, in production units for self-consumption regime, since it presents the most advantages in terms of medium/long term investment. After analysing the results obtained, namely in ten buildings of different dimensions and regions of mainland Portugal, in order to allow the generalization of results, it was concluded that all the estimated investments are economically and financially viable, presenting, in the case of a joint investment, a payback period of less than 6 years, a return on investment of more than 340%, a net present value of more than €200,000.00 and an internal rate of return greater than 17%.
Description
Keywords
Eficiência energética Energia solar fotovoltaica Energias renováveis Polícia de segurança pública Viabilidade económico-financeira Economic-financial viability Energy efficiency Photovoltaic solar energy Polícia de Segurança Pública Renewable energies