Purpose – Reducing greenhouse gas emissions from fossil fuel consumption is a big challenge on the view of global warming and climate changes caused by greenhouse gases as per recent scientific reports. This paper aims to identify the major challenges of green energy sources (GES) to the...

The possibility of cost reduction through learning by gathering experience is important in many industries where organizational efficiency in production and management is an important determinant of costs. In these industries, the difference in unit costs of production between experienced firms...