The volatile fossil fuel cost, the growing energy demand, rise in energy security issues and the increasing concerns of environmental issues have led man-kind to look for alternative energy sources. Wind energy is one of the alternatives. Prior to installment of a wind turbine, careful wind resource assessment and energy output estimation must be carried out in order to make judicious decisions...

Concerns about depletion of fossil fuels and energy security have increased interest in renewable energy sources. Biogas, generated from anaerobic digestion of organic wastes, has a relatively low cost and is considered to be a renewable energy carrier. There is an increasing interest in converting biogas to “green” transportation fuels. This fact sheet discusses the technologies that are curre...

The fast receding concentration of fossil fuels and the mounting global demand of energy has necessitated the production of alternate fuels to replace the conventional fossil fuels so as to counter the increased deposition of greenhouse gasses in the atmosphere, which has led to considerable climatic changes. These changes could result in catastrophic repercussions in the near future, including...

Currently Iran and Morocco are going through an energy transition. Ambitious plans exist at international, regional and national governance levels to deploy renewable energy sources (RES), such as concentrated solar power (CSP) and photovoltaic (PV) solar power. These plans foresee deployment of RES to cover local growing energy needs, to diversify energy supply and to benefit from electricity ...

The taxonomy, paleo-ecology and biogeography of the highly diverse "Cabarruyan" fauna are explored further. Eight species of three vetigastropod families are discussed here, one of which is described as new: Zeidora geigeri nov. spec. The other seven species were previously described from Recent material and three of these are also known from other fossil deposits. Most of the species still occ...

The use of biomass to provide energy has been fundamental to the development of civilisation. In recent times pressures on the global environment have led to calls for an increased use of renewable energy sources, in lieu of fossil fuels. Biomass is one potential source of renewable energy and the conversion of plant material into a suitable form of energy, usually electricity or as a fuel for ...

Shifting our electricity generation from fossil fuel to renewable energy sources introduces large fluctuations to the power system. Here, we demonstrate how increased fluctuations, reduced damping, and reduced intertia may undermine the dynamical robustness of power grid networks. Focusing on fundamental noise models, we derive analytic insights into which factors limit the dynamic robustness a...

We study the optimal transition from fossil fuels to renewable energy in a neoclassical growth economy with endogenous technological progress in energy production. Technological innovations maintain a fairly constant cost of fossil fuel energy even as increased exploitation raises mining costs. Nevertheless, the economy transitions to renewable energy once energy costs escalate after about 80% ...