The general equilibrium effects of high‐occupancy vehicle lanes on congestion, sprawl, energy use, and carbon emissions

2019 ◽  
Vol 60 (1) ◽  
pp. 174-200
Author(s):  
Weihua Zhao
Keyword(s):  
General Equilibrium ◽  
Carbon Emissions ◽  
Energy Use ◽  
High Occupancy Vehicle Lanes

Towards Optimizing Building Energy Use to Reduce Electric System Carbon Emissions

2010 ◽  
Author(s):  
Erik M. Greensfelder ◽  
Gregor P. Henze ◽  
Vincent J. Cushing
Keyword(s):  
Carbon Emissions ◽  
Energy Use ◽  
Strong Relationship ◽  
Temporal Variations ◽  
Simple Relationship ◽  
System Load ◽  
Electric System ◽  
Plant Emissions ◽  
Building Operation ◽  
Future Work

In spite of heightened interest in anthropogenic climate change, little attention has been paid to optimizing a building’s carbon emissions at the source. Most work in building efficiency has assumed that generating plant carbon emissions are constant at their long-term average values. This study sought to improve our understanding of the temporal variations in carbon emissions on a diurnal time scale and their relation to electric system dispatch and load in order to motivate future work in optimizing building operation to reduce carbon emissions. Hourly fossil fuel plant emissions and load data, available from the EPA, were used to characterize power system performance for four US locations (IL, NY, TX, and CA). The study had set out with a hypothesis hoping to find a simple relationship between electric system load and emissions. It was found that there is a significant correlation between increased system load and decreased emissions rates, yet this correlation is not easily defined. During high load conditions, emissions reductions are related to the increased use of gas generators, or may be related to operating plants at more efficient part load ratios. The work conducted in this study shows that, while more complex than hoped for, there is indeed a strong relationship between electric system load and carbon emissions rates.

scholarly journals The Impact of Climate Change on the Value of Growing Maize as a Biofuel

2020 ◽  
Vol 4 (1) ◽  
pp. 13-26
Author(s):  
Sally Olasogba ◽  
Les DUCKERS
Keyword(s):  
Climate Change ◽  
Carbon Footprint ◽  
Carbon Emissions ◽  
Energy Use ◽  
Farm Management ◽  
Energy Output ◽  
Net Energy ◽  
Primary Concern ◽  
Impact Of Climate Change ◽  
The Impact

Abstract: Aim: According to COP23, Climate Change threatens the stability of the planet’s ecosystems, with a tipping point believed to be at only +2°C.  With the burning of fossil fuels, held responsible for the release of much of the greenhouse gases, a sensible world- wide strategy is to replace fossil fuel energy sources with renewable ones. The renewable resources such as wind, hydro, geothermal, wave and tidal energies are found in particular geographical locations whereas almost every country is potentially able to exploit PV and biomass. This paper examines the role that changing climate could have on the growing and processing of biomass. The primary concern is that future climates could adversely affect the yield of crops, and hence the potential contribution of biomass to the strategy to combat climate change. Maize, a C4 crop, was selected for the study because it can be processed into biogas or other biofuels. Four different Nigerian agricultural zones growing maize were chosen for the study. Long-term weather data was available for the four sites and this permitted the modelling of future climates. Design / Research methods: The results of this study come from modelling future climates and applying this to crop models. This unique work, which has integrated climate change and crop modelling to forecast yield and carbon emissions, reveals how maize responds to the predicted increased temperature, change in rainfall, and the variation in weather patterns. In order to fully assess a biomass crop, the full energy cycle and carbon emissions were estimated based on energy and materials inputs involved in farm management: fertilizer application, and tillage type. For maize to support the replacement strategy mentioned above it is essential that the ratio of energy output to energy input exceeds 1, but of course it should be as large as possible. Conclusions / findings: Results demonstrate that the influence of climate change is important and in many scenarios, acts to reduce yield, but that the negative effects can be partially mitigated by careful selection of farm management practices. Yield and carbon footprint is particularly sensitive to the application rate of fertilizer across all locations whilst climate change is the causal driver for the increase in net energy and carbon footprint at most locations. Nonetheless, in order to ensure a successful strategic move towards a low carbon future, and sustainable implementation of biofuel policies, this study provides valuable information for the Nigerian government and policy makers on potential AEZs to cultivate maize under climate change. Further research on the carbon footprint of alternative bioenergy feedstock to assess their environmental carbon footprint and net energy is strongly suggested. Originality / value of the article: This paper extends the review on the impact of climate change on maize production to include future impacts on net energy use and carbon footprint using a fully integrated assessment framework. Most studies focus only on current farm energy use and historical climate change impact on farm GHG emissions.   

The possible macroeconomic and sectoral impacts of carbon taxation on Turkey’s economy: A computable general equilibrium analyses

2018 ◽  
Vol 29 (5) ◽  
pp. 784-801
Author(s):  
Levent Aydın
Keyword(s):  
General Equilibrium ◽  
Carbon Emissions ◽  
Computable General Equilibrium ◽  
Carbon Tax ◽  
Model Simulation ◽  
Effective Means ◽  
Carbon Taxes ◽  
Rate Of Increase ◽  
Carbon Taxation ◽  
Per Capita

Although the idea of carbon tax was debated widely in the early 1970s, the first carbon taxes were imposed in some Northern European countries at the beginning of the 1990s. Since the Paris summit in 2015, there has been a growing interest in carbon tax that has begun to increase again. Although Turkey’s share of carbon emissions in terms of total global emissions is low, the rate of increase in emissions has increased in recent years and should be a cause for concern. Therefore, the aim of this paper is to analyze the possible effects of carbon taxes on Turkey’s economy by disaggregating the electricity sector a by using the computable general equilibrium model. Simulation results show that carbon taxation is a highly effective means to reduce carbon emissions. Despite all sectors being adversely affected, some low emission energy, textile, and other service sectors benefit from carbon pricing. The results also indicate macroeconomic costs of imposing a carbon tax at $7 per ton of carbon in terms of the decrease in GDP by 0.061% and associated with per capita utility of the representative household by 0.09% in scenario a. Imposition of successively higher carbon taxes in scenario b and scenario c results in 5.75, 12.02, and 16.95% reduction in carbon emissions at decreasing rate, respectively. However, these reductions are also accompanied by a decrease in real GDP and per capita utility from household expenditure, as macroeconomic costs, in scenarios a, b, and c at increasing rates.

Transport sector energy use and carbon emissions: a study on sectoral fiscal policies

2020 ◽  
Vol 5 (3) ◽  
pp. 17-30
Author(s):  
Işıl Selçuk ◽  
Altuğ Köktaş
Keyword(s):  
Carbon Emissions ◽  
Energy Use ◽  
Transport Sector ◽  
Fiscal Policies

Sektor energetyczny na całym świecie w dużej mierze opiera się na paliwach kopalnych, co skutkuje ciągłym wzrostem emisji dwutlenku węgla na skalę światową. Jedną z najważniejszych przyczyn wzrostu emisji jest sektor transportu, którego rozwój jest powiązany z procesami globalizacji. Rozwój transportu lądowego, morskiego i lotniczego wraz z handlem międzynarodowym i zwiększonym zużyciem energii powoduje problemy środowiskowe. W związku z tym szacuje się, że jedna czwarta całkowitej emisji dwutlenku węgla pochodzi obecnie z sektora transportu. W tym kontekście, w celu zwalczania problemów środowiskowych, takich jak globalne ocieplenie i zmiany klimatyczne w skali międzynarodowej, wdrażane są takie inicjatywy, jak porozumienie klimatyczne z Paryża, a także zalecana jest polityka środowiskowa mająca na celu zmniejszenie ilości emisji. Celem niniejszego opracowania jest analiza polityki środowiskowej, która była szeroko omawiana w literaturze, pod kątem polityki fiskalnej. W tym kontekście omówiono narzędzia polityki fiskalnej, takie jak podatki, dotacje, zachęty i przepisy specyficzne dla sektora transportu. Niniejsze badanie, w którym zastosowano metodę opisową, dowodzi, że praktyki polityki fiskalnej mogą być skuteczną metodą zmniejszania ilości emisji dwutlenku węgla.

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