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2011
This paper provides an overview of the environmental, economical, and policy considerations related to biofuels. While the biofuel production and consumption exhibited significant increase over the first decade of the new millennium, this and further increases in biofuel production are driven primarily by government policies. Currently available first generation biofuels are with a few exceptions not economically viable in the absence of fiscal incentives or high oil prices. Also the environmental impacts of biofuels as an alternative to fossil fuels are quite ambiguous. The review of the most recent economic models dealing with biofuels and their economic impacts provides a distinction between structural and reduced form models. The review ofreduced models is structured toward the time series analysis approach to thedependencies between prices of feedstock, biofuels, and fossil fuels.
2012
Th is paper provides a general overview of the technological, social, environmental, economical, and policy considerations related to biofuels. While the biofuel production and consumption exhibited signifi cant increase over the fi rst decade of the new millennium, this and further increases in biofuel production are driven primarily by government policies. Currently available fi rst generation biofuels are not economically viable in the absence of fi scal incentives or high oil prices (with a few exceptional cases, especially in the case of the most developed Brazilian sugarcane production of ethanol). Also the environmental impacts of biofuels as an alternative to fossil fuels are quite ambiguous. Th e literature review of the most recent economic models dealing with biofuels and their economic impacts provides a distinction between structural and reduced form models. Th e discussion of structural models centres primarily on computable general equilibrium (CGE) models. Th e review of reduced models is structured toward the time series analysis approach to the dependencies between prices of biofuels, prices of agricultural commodities used for the biofuel production and prices of the fossil fuels.
Foundations and Trends® in Microeconomics, 2007
2015
Abstract. This paper provides an overview of the economics of biofuels. It starts by describing the remarkable growth of the biofuel industry over the last decade, with emphasis on developments in the United States, Brazil and the European Union, and it identifies the driving role played by some critical policies. After a brief discussion of the motivations that are commonly argued in favor of biofuels and biofuel poli-cies, the paper presents an assessment of the impacts of biofuels from the economics perspective. In particular, the paper explains the basic analytics of biofuel mandates, reviews several existing studies that have estimated the economic impacts of biofuels, presents some insights from a specific model, and outlines an appraisal of biofuel poli-cies and the environmental impacts of biofuels. The paper concludes with an examina-tion of several open issues and the future prospects of biofuels.
2011
This paper provides a general overview of the social, environmental, and economical issues related to biofuels and a review of economic modeling of biofuels. The increasing importance of biofuels is driven primarily by government policies since currently available biofuels are generally not economically viable in the absence of fiscal incentives or high oil prices. Also the environmental impacts of biofuels as an alternative to fossil fuels are quite ambiguous. The literature review of the most recent economic models dealing with biofuels and their economic impacts provides a distinction between structural and reduced form models. The discussion of structural models centers primarily on computable general equilibrium models. The review of reduced models is structured toward the time series analysis approach to the dependencies between prices of biofuels, prices of agricultural commodities used for the biofuel production and prices of the fossil fuels.
The use of fossil fuels for transportation represents one of the largest anthropogenic contributions to greenhouse gases (GHGs), and the need for clean, renewable, alternative fuel sources has become a global priority. It is no wonder that biofuel production has grown exponentially over the past 30 years; biofuels essentially contribute no additional GHG in their carbon life cycle and can be grown in almost any farming region in the world. However, the rapid expansion of the biofuel market has generated considerable controversy in the practice: many scientific studies have revealed significant variability in the GHG reduction efficiency of different biofuel production methods in relation to fossil fuel displacement, some of which actually result in net increases of GHG emissions. To address this controversy, this paper reviews the policies behind past and current biofuel production and analyzes the relative efficiencies of different production methods around the world. By assembling and comparing such eclectic data one can identify the primary sources of GHG emissions within the different methods, as well as which general trends in biofuel production show the greatest potential efficiency. This information will be of great assistance to any future policies that plan for a self-sufficient biofuel market with fewer government subsidies. The results of this study showed that within the wide spectrum of variance for different methods, the greatest factors affecting GHG reduction efficiency were the type of crop grown, the subsequent amount of nitrogen fertilizer required for cultivation, and the amount and type of land converted to farmland for production. In most instances, second-generation biofuels showed clear superiority to first-generation biofuels, though current technological limitations prevent their production on a competitive scale. Based on these conclusions, any future policies promoting biofuel production in the U.S. must include provisions to diversify the domestic market based on the most efficient crops and methods practiced in similar regions, preferably offering incentives towards responsible land and fertilizer use. Such policies must also promote the development of second-generation biofuel technology to further expand their role in the market.
California Agriculture, 2008
Biomass & Bioenergy, 2010
The biofuel industry has been rapidly growing around the world in recent years. Several papers have used general equilibrium models and addressed the economy-wide and environmental consequences of producing biofuels at a large scale. They mainly argue that since biofuels are mostly produced from agricultural sources, their effects are largely felt in agricultural markets with major land use and environmental consequences. In this paper, we argue that virtually all of these studies have overstated the impact of liquid biofuels on agricultural markets due to the fact that they have ignored the role of by-products resulting from the production of biofuels.
2015
Global energy demand is increasing and known global petroleum supplies are decreasing. In 2005 the U.S. consumed 20.8M barrels/day of petroleum, 60 % of which was supplied by oil imports. Almost half of the imported oil comes from parts of the world where an unstable political environment increases future supply risk. Alternative sources of liquid fuel will be required to provide U.S. energy security and to protect environmental quality and economic vitality. Biofuels have been heralded as a renewable, cost effective alternative to petroleum-based liquid fuels. Although a corn-
International Review of Environmental and Resource Economics, 2008
Biofuels are increasingly regarded as energy sources with the potential to solve diverse problems related to serious concerns, including climate change, environmental degradation, energy supply, and energy security. Here we examine biofuels, primarily biofuels used for transportation (e.g., ethanol and biodiesel), through the lens of modern resource economics and address fundamental questions, such as: Why biofuels? We then review some of the relevant literature and present a framework for analysis drawn mainly from the green accounting literature. The literature reviewed indicates that the effects of policies promoting conversion from fossil fuels to biofuels do not necessarily promote welfare. Our theoretical framework provides indications of possible reasons for this. Based on findings obtained using the framework we propose policies that not only penalize emissions of CO 2 from all sources, but also stimulate biomass growth. Finally, we identify issues for further research.
Energy Policy, 2011
Recent increases in production of crop-based (or first-generation) biofuels have engendered increasing concerns over potential conflicts with food supplies and land protection, as well as disputes over greenhouse gas reductions. This has heightened a sense of urgency around the development of biofuels produced from non-food biomass (second-generation biofuels). This study reviews the economic potential and environmental implications of production of second-generation biofuels from a variety of various feedstocks. Although secondgeneration biofuels could significantly contribute to This paper-a product of the Environment and Energy Team, Development Research Group-is part of a larger effort in the department to analyze economic, social and environmental impacts of biofuels. Policy Research Working Papers are also posted on the Web at http://econ.worldbank.org. The author may be contacted at [email protected]. the future energy supply mix, cost is a major barrier to increasing commercial production in the near to medium term. Depending on various factors, the cost of secondgeneration (cellulosic) ethanol can be two to three times as high as the current price of gasoline on an energy equivalent basis. The cost of biodiesel produced from microalgae, a prospective feedstock, is many times higher than the current price of diesel. Policy instruments for increasing biofuels use, such as fiscal incentives, should be based on the relative merits of different types of biofuels.
2008
In this paper, we review some of the basic energy balance and climate change impact issues associated with biofuels. For both the basic energy and greenhouse gas balances of producing and using a range of fuels, and for the increasingly debated and important issues of nongreenhouse gas impacts such as land, fertilizer, and water use, we conclude that an improved framework for the analysis and evaluation of biofuels is needed. These new methodologies and data sets are needed on both physical and socioeconomic aspects of the life-cycle of biofuels. We detail some of components that could be used to build this methodology and highlight key areas for future research. We look at the history and potential impacts of building the resource base for biofuel research, as well as at some of the land-use and socioeconomic impacts of different feedstockto-fuel pathways.
OECD/ITF Joint Transport Research Centre Discussion Papers, 2007
In this paper, we review some of the basic energy balance and climate change impact issues associated with biofuels. For both the basic energy and greenhouse gas balances of producing and using a range of fuels, and for the increasingly debated and important issues of nongreenhouse gas impacts such as land, fertilizer, and water use, we conclude that an improved framework for the analysis and evaluation of biofuels is needed. These new methodologies and data sets are needed on both physical and socioeconomic aspects of the life-cycle of biofuels. We detail some of components that could be used to build this methodology and highlight key areas for future research. We look at the history and potential impacts of building the resource base for biofuel research, as well as at some of the land-use and socioeconomic impacts of different feedstockto-fuel pathways.
Research Papers in Economics, 2014
This is the first paper that econometrically estimates the impact of rising Bioenergy production on global CO2 emissions. We apply a structural vector autoregression (SVAR) approach to time series from 1961 to 2009 with annual observation for the world biofuel production and global CO2 emissions. We find that in the medium-to long-run biofuels significantly reduce global CO2 emissions: the CO2 emission elasticities with respect to biofuels range between-0.57 and-0.80. In the short-run, however, biofuels may increase CO2 emissions temporarily. Our findings complement those of life-cycle assessment and simulation models. However, by employing a more holistic approach and obtaining more robust estimates of environmental impact of biofuels, our results are particularly valuable for policy makers.
The Impacts of Biofuels on the Economy, Environment, and Poverty, 2014
Biofuels policies induce land use changes (LUC), including cropland expansion and crop switching, and this in turn alters water and soil management practices. Policies differ in the extent and type of land use changes they induce and therefore in their impact on water resources. We quantify and compare the spatially varying water impacts of biofuel crops stemming from LUC induced by two different biofuels policies by coupling a biophysical model with an economic model to simulate the economically viable mix of crops, land uses, and crop management choices under alternative policy scenarios. We assess the outputs of an economic model with a high-resolution crop-water model for major agricultural crops and potential cellulosic feedstocks in the US to analyze the impacts of three alternative policy scenarios on water balances: a counterfactual 'no-biofuels policy' (BAU) scenario, a volumetric mandate (Mandate) scenario, and a clean fuel-intensity standard (CFS) scenario incentivizing fuels based on their carbon intensities. While both biofuel policies incentivize more biofuels than in the counterfactual, they differ in the mix of corn ethanol and advanced biofuels from miscanthus and switchgrass (more corn ethanol in Mandate and more cellulosic biofuels in CFS). The two policies differ in their impact on irrigated acreage, irrigation demand, groundwater use and runoff. Net irrigation requirements increase 0.7% in Mandate and decrease 3.8% in CFS, but in both scenarios increases are concentrated in regions of Kansas and Nebraska that rely upon the Ogallala aquifer for irrigation water. Our study illustrates the importance of accounting for the overall LUC and shifts in agricultural production and management practices in response to policies when assessing the water impacts of biofuels.
SSRN Electronic Journal, 2000
Trends in Biotechnology, 2016
Springer eBooks, 2014
There is a growing awareness to the role that natural resources, such as water, land, forests and environmental amenities, play in our lives. There are many competing uses for natural resources, and society is challenged to manage them for improving social well-being. Furthermore, there may be dire consequences to natural resources mismanagement. Renewable resources, such as water, land and the environment are linked, and decisions made with regard to one may affect the others. Policy and management of natural resources now require interdisciplinary approaches including natural and social sciences to correctly address our society preferences. This series provides a collection of works containing most recent fi ndings on economics, management and policy of renewable biological resources, such as water, land, crop protection, sustainable agriculture, technology, and environmental health. It incorporates modern thinking and techniques of economics and management. Books in this series will incor porate knowledge and models of natural phenomena with economics and managerial decision
2011
With the current phenomena of increasing food and oil prices there is an urgent need to scrutinize the controversial role of biofuels. They have recently been considered as both the promising source of inexpensive and sustainable energy and the underlying reason for soaring agricultural commodity prices. Owing to gradually growing population, that is forecast to reach 9 billion by 2050, and developing countries having higher standard of living, the society is faced with a great challenge of increased demand for food and energy never seen before. This, combined with declining oil reserves and substantial greenhouse gas emissions, has made groups of scientist, policy-makers as well as companies turn to the use of biofuels. The purpose of this paper is to conduct an analysis on the economic and environmental impact of large scale biofuels production with respect to food price spikes, energy-efficiency and carbon-debt issues
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