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This paper presents a comparative analysis of energy governance regarding nonconventional renewable energy sources (NCRES) in Brazil and Germany. Brazil is a world leader in the use of conventional renewable energy sources, such as hydro power, while Germany has been achieving outstanding results in fostering NCRES. The focus is on two critical issues: the legal and regulatory framework and the institutions created to support the NCRES market development. The comparison shows that, despite the very different energy situations and policy drivers, valuables lessons can be extracted from the German experience. The main lesson for Brazil is to think NCRES as a strategic opportunity to rely less on fossil fuel and large hydroelectric power plants, to decentralize the electric power sector, to use the huge solar, biomass and wind power potential available in the country and to create a environment-friendly NCRES industry. To this end, three critical points were identified: (1) the legal and regulatory framework should be improved; (2) long-term energy planning taking into account social, economic and climate issues and; (3) the current institutions supporting NCRES in Brazil should be upgraded and/or new ones, such as more specific energy agencies, should be created. [ABSTRACT FROM AUTHOR]

Hydropower is the backbone of the Brazilian electricity generation sector. Even though the use of this resource is advantaged in terms of greenhouse gas emissions, last years׳ severe droughts have exposed the country׳s huge dependency on hydroelectricity. Brazil׳s electricity supply system has shown to be vulnerable to electricity shortages and has demanded significant overhaul in order to address its challenges. The present paper provides a comprehensive review of the current status of the Brazilian electricity sector and discusses diversification of electricity generation mix as a strategy to improve electricity supply security in the country. An overview of the main features of the energy sources applied in Brazil is also presented through a review of the latest available generation data. The central section of this work is a discussion of the main causes of the current crisis and the future role of renewable energy sources in a 10-year perspective. [ABSTRACT FROM AUTHOR]

The potential for sugarcane ethanol from Brazil to mitigate GHG emissions is undeniable, but the way that ethanol is produced during the agricultural and industrial phases will ultimately determine its benefits to society. In this paper, we evaluate the environmental impacts of sugarcane agriculture and ethanol production in Brazil as management practices continue to change and production expands to new frontiers. We focused our evaluation on the impacts on water, atmosphere, and soils, including how the application of organic and inorganic fertilizers and the accumulation of crop residue in the field affect emissions of greenhouse gases (GHG). We also addressed the impacts of land use changes on threatened biomes and discussed some of the present obstacles regarding conservation and restoration efforts. We concluded that, since a similar assessment was put forth in 2008, our knowledge about the environmental impacts of sugarcane ethanol in Brazil has advanced with regard to soil degradation, nitrogen dynamics, and soil carbon stocks. However, more information is still needed about the impacts of the increasing use of pesticides, herbicides, and fertilizers in sugarcane agriculture, especially on water resources. Furthermore, without a better understanding about how landscape fragmentation affects the biodiversity of terrestrial and aquatic tropical ecosystems and the services they provide, policies created to protect and restore them may be ineffective. On the other hand, the use of presently available scientific information to end unsustainable farming and the implementation of conservation strategies proposed by the Brazilian Forest Code could be a first step to guarantee that ethanol is produced more sustainably in Brazil. [ABSTRACT FROM AUTHOR]