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Handbook of Energy and Environment Policy

Edited By Celil Aydin and Burak Darici

The book deals with the broad perspectives on the energy and environment topics and questions the traditional view on energy and environment policy and issues. Nowadays, energy and environmental issues can be accepted as the related subjects by the whole world. The link between energy and environment is backed to the time when only nature's primary resources were used. Primitive societies’ energy demand was small compared to the forces of the environment. With the emergence of industrial nations, the importance of energy and environment relation appeared again.

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9 Performance Analysis of the Companies in the Electricity Index of Borsa Istanbul


Meltem Ece Çokmutlu

9   Performance Analysis of the Companies in the Electricity Index of Borsa Istanbul


Sources of energy, which can be defined as the sum of activities in a system, can be classified as primary sources and secondary sources (Erdal and Karakaya, 2012). Primary sources are natural sources that are used without any treatment (Aydın F. F., 2010). These are divided into two categories as renewable and non-renewable energy sources. Renewable energy sources are sources that can be replaced through ecological cycles in a short time. Geothermal, biomass, wind, hydroelectricity, and solar energy can be given as examples. Non-renewable energy sources are sources that cannot be replaced, produced, or grown through ecological cycles in a short time. Fuels from oil and crude oil, natural gas, coal, and nuclear energy are examples of such sources (GRI, 2016). Secondary energy sources are sources like electricity and oil produced by subjecting renewable and non-renewable energy sources to a series of processes (Korkmaz and Develi, 2012). The energy type resulting from physical transformation of primary energy sources such as coal, natural gas, sun, water, and geothermal can be defined as electric energy, too (Yıldırım, 2018; Çankaya, 2018).

Electric energy has a big share among the energy types that are generated and consumed both in Turkey and in the world. Electric energy was used first for lighting, then for industry, and finally as a thermal source, and the need for this...

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