In the paper is done a comparatively analysis of the Bulgarian economy with Central and East European countries, members of European Union, which are quite close to the Bulgarian economy. It is found a serious retardation of the energy efficiency dynamics in Bulgaria. That is why, there are...

În the base of the European Commission forecast up to 2030 it is done a comparative analysis of the Bulgarian energy tendencies with those of EC-27 and some Central East European Countries members of European Union. The results point that regarding some main energy indicators the Bulgarian...

A global and local learning model (GALLM) has been developed to project the cost and global uptake of different electricity generation technologies to the year 2050. This model features three regions, endogenous technological learning within and across those regions, various government policies...

Im Zuge der Energiewende werden die fluktuierenden erneuerbaren Energien in Deutschland stark ausgebaut. Dadurch ergeben sich neue Herausforderungen für das Elektrizitätssystem. In diesem Beitrag wird zunächst dargestellt, welche Arten von Speichern und anderen Flexibilitätsoptionen...

Many governments and businesses would like to minimize or eliminate the greenhouse gases that result from their purchases of power from electricity grids. Because electricity flows cannot be traced from purchasers back to specific generators, some regulators and users have proposed an...

The conversion of industrial paper sludge to ethanol was simulated using engineering process simulation software loaded with laboratory generated conversion data and financially analyzed. In one scenario, sludge is fractionated to remove ash, generating a higher concentration carbohydrate stream...

Co-firing biomass and coal in retrofitted power plants is an efficient means to reduce carbon dioxide emissions in the energy sector. Under IPCC reporting rules, the impacts of energy produced from biomass would not be reported in the energy sector, thereby effectively lowering the emission...

The expansion of wind-generation in the United States poses significant challenges to policy-makers, particularly because wind's intermittency and unpredictability can exacerbate problems of congestion on a transmission-constrained grid. Understanding these issues is necessary if optimal...

We analyze the interaction between a reliable source of electricity production and intermittent sources such as wind or solar power. We first characterize the optimal energy mix, emphasizing the availability of the intermittent source as a major parameter for the optimal investment in capacity....

One country or sector that tries to reduce greenhouse gas emissions may fear that other countries or sectors will get a competitive advantage and increase emissions. Computable general equilibrium (CGE) models such as Elliott et al. (2010a, 2010b) indicate that 15–25% of abatement might be...