Für einen nachhaltigen Ausbau von Energie aus Biogasanlagen ist die Versorgung mit Substraten notwendig, die vielfach über entsprechende Lieferverträge geregelt wird. Nach Wissen der Autoren liegen bislang keine quantitativen Untersuchungen zur Analyse des Auswahlverhaltens von Landwirten in...

For a sustainable development of energy production in biogas plants, the continuous supply with substrates is essential. To the authors’ knowledge, there have not been carried out any quantitative investigations of farmers’ choices with regard to supply contracts for biogas plants. Thus, it...

In recent years the manufacturing of renewable-energy technologies has become truly global. The associated rise in international investment and trade in goods and services related to renewable energy has been rapid, but it has not always been smooth. Already there have been challenges at the...

Energy security is sometimes used to advocate renewable energy systems. Renewable energy systems can improve some aspects of security, but they will not automatically lead to the removal of all types of security problems and new problems will most certainly arise. This paper analyses energy...

Being a by-product of the well-established charcoal industry, slow pyrolysis bio-oil can be an excellent, cost-effective and renewable liquid fuel. However, even in Brazil, a country with a very clean energy profile and large-scale charcoal production, bio-oil is not properly utilised yet. A...