For economic development and generation of wealth, energy plays a significant role. Energy is available in two different alternatives, non-renewable and renewable sources. The need for new sustainable energy supply options that use renewable energies are emphasized due to limited fossil fuels and environmental problems associated with it. In recent years, solar energy has received great deal of...

In the science of operation research and decision theory, selection is the most important process. Selection is a process that studies multiple qualitative and quantitative criteria, related to the science of management, which are mostly incompatible with each other. The multi criteria selection of a renewable energy portfolio is one of the main issues considered in multi criteria literatur...

The main asset of this paper is among the uses of fuzzy logic in the engineering sector and especially in the renewable energies as a large alternate of fossil energies, in this paper a PSO-based optimization is used to find the optimal scaling parameters, of a fuzzy logic-based MPPT controller, that maximize the efficiency of a photovoltaic pumping system. The tuning of input and output parame...

This article revisits an analysis by Frondel, Ritter and Schmidt (2008) of Germany’s Renewable Energy Act, which legislates a system of feed-in tariff s to promote the use of renewable energies. As in the original article, we argue that Germany’s support scheme subsidizes renewable energy technologies not based on their long-term market potential, but rather on their relative lack of competitiv...

Renewable energies become more important, and they contribute to the EU’s goals for greenhouse-gas reduction. However, their fluctuating nature calls for demand-side-management techniques, which balance energy generation and consumption. Such techniques are currently not broadly deployed. This paper describes the latest results from the FINSENY project on how FutureInternet enablers and market ...

The increasing importance of environmental concern, fuel savings and unavailability of power has led to the renewal of interest in renewable energies. This paper examines global research patterns to assess development prospects. The various new and advanced methods to harness solar energy and also the methods to increase the efficiency of the existing techniques are discussed.

The share of renewable energies on the net electricity consumption is rising steadily. Especially intermittent, non-controllable sources like wind and sun are gaining importance. With an installed amount of non-controllable power that exceeds the yearly peak load, situations can occur with a surplus of energy in electricity supply systems. This surplus will rise strongly with the share of fluct...