This study attempts to discover the nexus between crude oil price fluctuation after heavy oil upgrading and stock returns of petroleum companies in the U.S. Stock Exchange for the years 2008 to 2018. One of the methods of upgrading heavy crude oil is to extract asphaltene from crude oil....

Purpose of the article: Cities account for 60-80% of global energy consumption, and based on projections the development of urban areas will be the main engine of energy use growth in the future. Understanding and analysing the urban energy use and clarifying social and spatial inequalities is...

The aim of this paper is to enunciate a new way to estimate levelized cost of electric energy (LCOE), considering emission of greenhouse gases cost, by taking the theoretical cost of avoiding pollution as the emission cost. In this way, it would be comparable LCOE from different sources of...

Much of the energy used in the world is associated with the construction sector, and one of the ways to reduce that energy consumption is to do each constructive process in an energetically efficient way. The aim of this paper is to present results from an energy efficiency program in the...

Circular economy (CE) is a new trend in balanced development, directed at limiting consumption of resources and minimising waste production. In consideration of the European Commission’s (EC) postulates of the CE implementation, the article aims at verifying whether coal power plants in...

The greening of power engineering is a component of the ecologically sustainable development strategy being implemented in the world and also a pillar of the EU sustainable energy policy. One of the main fields of activity for the greening of power engineering are actions for improving power...

In this study, we used the PSTR (panel smooth transition regression) model to investigate the nonlinear relationship between beta (systematic risk) and returns (world market excess returns) for net oil export and net oil import groups. We set the volatility of world market excess return as the...

The sharing economy is a relatively recent phenomenon that aims to promote environmentally friendly practices. The sharing economy is characterized by the convergence of information, marketing and technology to create a new paradigm in which customers value access above ownership, allowing them...