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| 1 |
ID:
177154
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| Summary/Abstract |
This study evaluated the effectiveness of technology-push and market-pull policies in encouraging the production and use of biofuels in 15 countries including major biofuels producers. Biofuels production and consumption data for the 12-year period of 2006-2017 showed that in most of the surveyed countries, biofuels policies played an important role in developing and growing regional and national biofuels markets. Blending mandates continue to be the main market-pull policy used to create and expand biofuels markets. Countries with a mixture of market-pull and technology-push policy instruments have been most successful at increasing biofuels production and use and also developing and deploying less mature advanced biofuels. Most policies have primarily promoted the production and use of biofuels for road transport with key long-distance transport sectors (aviation and shipping) drawing less policy attention despite being significant fuel consumers and carbon emitters. While many older policies were originally developed to promote energy security, more recent policies, such as low carbon fuel standard, have reduction in the carbon intensity of transportation fuels as a primary goal. While policies have been essential in promoting the on-going growth of biofuels, they have not been sufficient to drive the level of development needed to decarbonize the transport sector.
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| 2 |
ID:
171408
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| Summary/Abstract |
Freight or goods-movement transportation accounts for 6% of global greenhouse gas (GHG) emissions and 10% of emissions in our case study of Canada – mostly from heavy-duty trucks. Little research has explored the types of policies needed to achieve 2050 GHG mitigation goals in the land freight sector, i.e., 80% reductions from 2005 levels. We use a behaviourally-realistic technology-adoption model (CIMS-Freight) to simulate the GHG impacts of several climate policies, individually and in combinations, on the land freight sector (trucking and rail). Results indicate that current policies in Canada (including standards and carbon pricing) will not achieve GHG reduction targets for this sector – in fact, emissions continue to rise. Further, no individual policy has a high probability of achieving 2030 or 2050 GHG targets, including more stringent versions of the carbon tax, fuel efficiency standards, low-carbon fuel standard (LCFS), or a zero-emissions vehicle (ZEV) mandate for trucks. Finally, we identify several policy combinations that have a high probability of achieving 2050 goals, in particular a stringent ZEV mandate for trucks complemented by a stringent LCFS. While other effective policies and policy combinations are possible, Canada's present and proposed policies are not stringent enough to reach deep GHG targets.
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| 3 |
ID:
110412
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2011.
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| Summary/Abstract |
State and regional policies, such as low carbon fuel standards (LCFSs), increasingly mandate that transportation fuels be examined according to their greenhouse gas (GHG) emissions. We investigate whether such policies benefit from determining fuel carbon intensities (FCIs) locally to account for variations in fuel production and to stimulate improvements in FCI. In this study, we examine the FCI of transportation fuels on a lifecycle basis within a specific state, Minnesota, and compare the results to FCIs using national averages. Using data compiled from 18 refineries over an 11-year period, we find that ethanol production is highly variable, resulting in a 42% difference between carbon intensities. Historical data suggests that lower FCIs are possible through incremental improvements in refining efficiency and the use of biomass for processing heat. Stochastic modeling of the corn ethanol FCI shows that gains in certainty due to knowledge of specific refinery inputs are overwhelmed by uncertainty in parameters external to the refiner, including impacts of fertilization and land use change. The LCA results are incorporated into multiple policy scenarios to demonstrate the effect of policy configurations on the use of alternative fuels. These results provide a contrast between volumetric mandates and LCFSs.
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| 4 |
ID:
150723
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| Summary/Abstract |
Natural gas transportation fuels are credited in prior studies with greenhouse gas emissions savings relative to petroleum-based fuels and relative to the total emissions of biofuels. These analyses, however, overlook a source of potentially large indirect emissions from natural gas transportation fuels, namely the emissions from incremental coal-fired generation caused by price-induced substitutions away from natural-gas-fired electricity generation. Because coal-fired generation emits substantially more greenhouse gases and criteria air pollutants than natural-gas-fired generation, this indirect coal-use change effect diminishes potential emissions savings from natural gas transportation fuels. Estimates from a parameterized multi-market model suggest the indirect coal-use change effect rivals in magnitude the indirect land-use change effect of biofuels and renders natural gas fuels as carbon intensive as petroleum fuels.
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| 5 |
ID:
121261
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| Publication |
2013.
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| Summary/Abstract |
This paper examines the economic and GHG implications of stacking a low carbon fuel standard (LCFS) with and without a carbon price policy on the Renewable Fuel Standard (RFS). We compare the performance of various policy combinations for food and fuel prices, fuel mix and fuel consumption. We also analyze the economic costs and benefits of alternative policy combinations and their distributional effects for consumers and producers in the transportation and agricultural sector in the US. Using a dynamic, multi-market, partial equilibrium model of the transportation and agricultural sectors, we find that combining the RFS with an LCFS policy leads to a reduction in first generation biofuels and an increase in second generation biofuels compared to the RFS alone. This policy combination also achieves greater reduction in GHG emissions even after considering offsetting market mediated effects. Imposition of a carbon price with the RFS and LCFS policy primarily induces fuel conservation and achieves larger GHG emissions reduction compared to the other policy scenarios. All these policy combinations lead to higher net economic benefits for the transportation and agricultural sectors relative to the no policy baseline because they improve the terms of trade for US.
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