Since the financial crisis and the subsequent global economic recession, the ethanol market has been impacted by increased volatility and change. Dr Claudiu Covrig provides a global view on the ebbs and flows in ethanol markets over the last few years.

Eastern Europe is beginning to unveil an important biofuel and agricultural potential. Dr Claudiu Covrig, from Kingsman, reviews the progress that eastern EU countries have made toward exploiting disposable arable land for the production of biofuels, and considers which countries have the most potential.

Humanity's current problems related to global warming and energy sources' security for present and future generations can be solved only by reconsidering our position towards the environment. The profit cannot be measured anymore only in terms of capital gained but also in terms of life quality, proper air we breath or our children's future. Renewable energy sources are meant to help the society to develop, to secure the energy needs and also to

As in the other domains, the wish for obtaining an optimal dynamic structure, by formulating and solving a single problem of optimization, face many impediments. This work briefly refers to these obstacles and offers algorithms for improving the solutions of non-linear optimization(monoobjective) and multicriteria. There are also mentioned specific aspects of the mechanical systems’ optimization.

The present article treat the photovoltaic cells and their applications with the advantages of choosing a PV system, present the different cell types efficiency and peculiarities, the way that a photovoltaic cell works, the elements of a PV system, market positions, job opportunities and environment, estimations regarding the implementation of a PV system in a production system.

In PART 1 this article treats the solar collectors and their applications underlining the advantages of choosing a solar system based on solar collectors, presents different types of collectors with their efficiency and peculiarities and the elements of a such a system. The evolution of european market, the prices and other economical aspects are also presented in the article in PART 2, accompanied by technico economical estimations regarding the

In PART 1 this article treats the solar collectors and their applications underlining the advantages of choosing a solar system based on solar collectors, presents different types of collectors with their efficiency and peculiarities and the elements of a such a system. The evolution of european market, the prices and other economical aspects are also presented in the article in PART 2, accompanied by technico economical estimations regarding the

The solar energy is the most important energy source available because, besides the fact that it is not polluting the environment and it helps to the reduction of green house effect, it is free of charge and it can be easily converted to other forms of energy. The design of solar applications must be based on the local solar potential assessment. This work represents the first part of a model for assessing the solar potential in the area of the Brasov