scholarly journals A Review of Geothermal Technologies and Their Role in Reducing Greenhouse Gas Emissions in the USA

2020 ◽  
Vol 143 (1) ◽  
Author(s):  
Philip J. Ball
Keyword(s):  
Greenhouse Gas ◽  
Power Plants ◽  
Carbon Tax ◽  
Ghg Emissions ◽  
Abatement Cost ◽  
Combined Cycle ◽  
Low Carbon ◽  
Geothermal Heat ◽  
The Cost

Abstract A review of conventional, unconventional, and advanced geothermal technologies highlights just how diverse and multi-faceted the geothermal industry has become, harnessing temperatures from 7 °C to greater than 350 °C. The cost of reducing greenhouse emissions is examined in scenarios where conventional coal or combined-cycle gas turbine (CCGT) power plants are abated. In the absence of a US policy on a carbon tax, the marginal abatement cost potential of these technologies is examined within the context of the social cost of carbon (SCC). The analysis highlights that existing geothermal heat and power technologies and emerging advanced closed-loop applications could deliver substantial cost-efficient baseload energy, leading to the long-term decarbonization. When considering an SCC of $25, in a 2025 development scenario, geothermal technologies ideally need to operate with full life cycle assessment (FLCA) emissions, lower than 50 kg(CO2)/MWh, and aim to be within the cost range of $30−60/MWh. At these costs and emissions, geothermal can provide a cost-competitive low-carbon, flexible, baseload energy that could replace existing coal and CCGT providing a significant long-term reduction in greenhouse gas (GHG) emissions. This study confirms that geothermally derived heat and power would be well positioned within a diverse low-carbon energy portfolio. The analysis presented here suggests that policy and regulatory bodies should, if serious about lowering carbon emissions from the current energy infrastructure, consider increasing incentives for geothermal energy development.

scholarly journals DEPENDENCE OF THE COST OF ELECTRICITY ON THE VOLUME OF GREENHOUSE GAS EMISSIONS

2022 ◽  
Vol 1 (15) ◽  
pp. 71-75
Author(s):  
Dmitriy Kononov
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Energy Security ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Low Carbon ◽  
Electricity Prices ◽  
Low Carbon Development ◽  
The Cost

The strategy of low-carbon development of the economy and energy of Russia provides for the introduction of a fee (tax) for carbon dioxide emissions by power plants. This will seriously affect their prospective structure and lead to an increase in electricity prices. The expected neg-ative consequences for national and energy security are great. But serious and multilateral research is needed to properly assess these strategic threats

Conventional Power Plants Equipped With Systems for CO2 Emission Abatement

2008 ◽  
Author(s):  
Marco Gambini ◽  
Michela Vellini
Keyword(s):  
Co2 Emission ◽  
Power Plants ◽  
Emission Trading ◽  
Abatement Cost ◽  
Combined Cycle ◽  
Co2 Removal ◽  
Atmospheric Discharge ◽  
Pressure Transport ◽  
Carbon Dioxide Co2 ◽  
The Cost

This paper presents the results from an evaluation of the performance and cost of Italian power plants (a steam cycle power plants — 500 MW — fed by coal and a combined cycle power plant — 300 MW — fed by natural gas) with CO2 emissions control equipment to achieve a fixed reduction in atmospheric discharge of carbon dioxide (CO2) and so to accomplish the CO2 emission targets established by the Kyoto Protocol. The reduction of the CO2 content in the flue gas is achieved by amine scrubbing (CO2 removal), removal of water from CO2 (drying), compression to pipeline pressure; transport and storage are not considered. The paper presents an economic evaluation of the CO2 abatement cost and compares it with the cost of allowances in the Emission Trading System and with the payment of the penalty for the emissions in excess when there is no CO2 quota available on the market.

Greenhouse Gas Emissions Reduction Potentials in Iranian Electricity Generation Sector and Comparison With Canada

2008 ◽  
Author(s):  
Farshid Zabihian ◽  
Alan S. Fung
Keyword(s):  
Power Generation ◽  
Natural Gas ◽  
Greenhouse Gas ◽  
Electricity Generation ◽  
Power Plants ◽  
Thermal Power ◽  
Ghg Emissions ◽  
Combined Cycle ◽  
Reduction Potentials ◽  
Power Stations

In recent years, greenhouse gas (GHG) emissions and their potential effects on the global climate change have been a worldwide concern. Based on International Energy Agency (IEA), power generation contributes half of the increase in global GHG emissions in 2030. In the Middle East, Power generation is expected to make the largest contribution to the growth in carbon-dioxide emissions. The share of the power sector in the region’s total CO2 emissions will increase from 34% in 2003 to 36% in 2030. Therefore, it is very important to reduce GHG emissions in this industry. The purpose of this paper is to examine greenhouse gas emissions reduction potentials in the Iranian electricity generation sector through fuel switching and adoption of advanced power generation systems and to compare these potentials with Canadian electricity generation sector. These two countries are selected because of raw data availability and their unique characteristics in electricity generation sector. To achieve this purpose two different scenarios have been introduced: Scenario #1: Switching existing power stations fuel to natural gas. Scenario #2: Replacing existing power plants by natural gas combined-cycle (NGCC) power stations (The efficiency of NGCC is considered to be 49%). The results shows that the GHG reduction potential for Iranian steam power plants, gas turbines and combined cycle power plants in first scenario are 9.9%, 5.6%, and 2.6%, respectively with the average of 7.6%. For the second scenario the overall reduction of 31.9%, is expected. The average reduction potential for Canadian power plants for scenario number 1 and 2 are 33% and 59%, respectively. As it can be seen, in Canada there are much higher potentials to reduce GHG emissions. The reason is that in Canada majority of power plants use coal as the primary fuel. In fact almost 73% of electricity in thermal power stations is generated by coal. Whereas in Iran almost all power plants (with some exceptions) are dual fuels and 77% of energy consumed in Iran’s thermal power plants come from natural gas. Also, 21% of total electricity generated in Iran is produced by combined-cycle power plants.

A CROSS-MODEL COMPARISON OF GLOBAL LONG-TERM TECHNOLOGY DIFFUSION UNDER A 2°C CLIMATE CHANGE CONTROL TARGET

2013 ◽  
Vol 04 (04) ◽  
pp. 1340013 ◽  
Author(s):  
B. C. C. VAN DER ZWAAN ◽  
H. RÖSLER ◽  
T. KOBER ◽  
T. ABOUMAHBOUB ◽  
K. V. CALVIN ◽  
...  
Keyword(s):  
Climate Change ◽  
Technology Diffusion ◽  
Temperature Increase ◽  
Power Plants ◽  
Model Comparison ◽  
Ghg Emissions ◽  
Energy System ◽  
Low Carbon ◽  
Cross Model

We investigate the long-term global energy technology diffusion patterns required to reach a stringent climate change target with a maximum average atmospheric temperature increase of 2°C. If the anthropogenic temperature increase is to be limited to 2°C, total CO 2 emissions have to be reduced massively, so as to reach substantial negative values during the second half of the century. Particularly power sector CO 2 emissions should become negative from around 2050 onwards according to most models used for this analysis in order to compensate for GHG emissions in other sectors where abatement is more costly. The annual additional capacity deployment intensity (expressed in GW/yr) for solar and wind energy until 2030 needs to be around that recently observed for coal-based power plants, and will have to be several times higher in the period 2030–2050. Relatively high agreement exists across models in terms of the aggregated low-carbon energy system cost requirements on the supply side until 2050, which amount to about 50 trillion US$.

scholarly journals Relative Greenhouse Gas Abatement Cost Competitiveness of Biofuels in Germany

2017 ◽  
Author(s):  
Markus Millinger ◽  
Kathleen Meisel ◽  
Maik Budzinski ◽  
Daniela Thrän
Keyword(s):  
Greenhouse Gas ◽  
Fossil Fuels ◽  
Ghg Emissions ◽  
Abatement Cost ◽  
Paper Analysis ◽  
Silage Maize ◽  
Cost Competitiveness ◽  
Biogenic Material ◽  
Greenhouse Gas Abatement

Transport biofuels derived from biogenic material are used for substituting fossil fuels, thereby abating greenhouse gas (GHG) emissions. Numerous competing conversion options exist to produce biofuels, with differing GHG emissions and costs. In this paper analysis and modelling of the long-term development of GHG abatement and relative GHG abatement cost competitiveness between crop-based biofuels in Germany is carried out. Presently dominant conventional biofuels and advanced liquid biofuels were found not to be competitive compared to the substantially higher yielding options available: sugar beet based ethanol for the short to medium term least-cost option and Substitute Natural Gas (SNG) for the medium to long term. The competitiveness of SNG was found to depend highly on the emissions development of the power mix. Silage maize based biomethane was found competitive on a land area basis, but not on an energetic basis. Due to land limitations as well as cost and GHG uncertainty, a stronger focus on the land use of crop-based biofuels should be laid in policy.

scholarly journals IMPORTANCE OF THE CARBON TAX FOR THE ENERGY SECTOR AND REDUCTION OF GREENHOUSE GAS EMISSIONS IN UKRAINE

2020 ◽  
Author(s):  
V. Pekkoiev
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Development Strategy ◽  
Carbon Tax ◽  
Ghg Emissions ◽  
Energy Sector ◽  
Low Carbon ◽  
Gas Emissions ◽  
Increase Energy Efficiency ◽  
Low Carbon Development

The article analyzes the current state of the energy sector of Ukraine, identifies key issues that need urgent consideration. Trends in greenhouse gas emissions in Ukraine are analyzed. The urgency of the carbon tax for Ukraine is higher than ever, as we have made a number of climate commitments (the Paris Agreement) to the EU. We strive to follow European values and significantly reduce GHG emissions by 2050. At the same time, Ukraine is focused on low-carbon development, which is reflected in the Low-Carbon Development Strategy until 2050 and the Energy Strategy until 2035. The rational use of carbon taxation can accumulate funds to modernize the energy sector and increase energy efficiency. Using an instrument such as the general equilibrium model for Ukraine, the economic impact of implementing various low-carbon policies to curb global warming at 1.5 and 2 ° C was assessed. The results show that the carbon tax plays an important role in increasing Ukraine's GDP in 2050 by 12-15% in 2050.

scholarly journals Reducing greenhouse gas emissions of Amazon hydropower with strategic dam planning

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Rafael M. Almeida ◽  
Qinru Shi ◽  
Jonathan M. Gomes-Selman ◽  
Xiaojian Wu ◽  
Yexiang Xue ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Power Plants ◽  
Amazon Basin ◽  
Fossil Fuel ◽  
Ghg Emissions ◽  
Carbon Intensity ◽  
Low Carbon ◽  
Optimization Framework ◽  
Basin Scale ◽  
Fossil Fuel Power Plants

Abstract Hundreds of dams have been proposed throughout the Amazon basin, one of the world’s largest untapped hydropower frontiers. While hydropower is a potentially clean source of renewable energy, some projects produce high greenhouse gas (GHG) emissions per unit electricity generated (carbon intensity). Here we show how carbon intensities of proposed Amazon upland dams (median = 39 kg CO2eq MWh−1, 100-year horizon) are often comparable with solar and wind energy, whereas some lowland dams (median = 133 kg CO2eq MWh−1) may exceed carbon intensities of fossil-fuel power plants. Based on 158 existing and 351 proposed dams, we present a multi-objective optimization framework showing that low-carbon expansion of Amazon hydropower relies on strategic planning, which is generally linked to placing dams in higher elevations and smaller streams. Ultimately, basin-scale dam planning that considers GHG emissions along with social and ecological externalities will be decisive for sustainable energy development where new hydropower is contemplated.

Low-Carbon Russia: Prospects after the Crisis

2009 ◽  
pp. 107-120 ◽  
Author(s):  
I. Bashmakov
Keyword(s):  
Economic Growth ◽  
Potential Energy ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Low Carbon ◽  
Modeling Tools ◽  
Gas Emissions ◽  
Scenario Approach

On the eve of the worldwide negotiations of a new climate agreement in December 2009 in Copenhagen it is important to clearly understand what Russia can do to mitigate energy-related greenhouse gas emissions in the medium (until 2020) and in the long term (until 2050). The paper investigates this issue using modeling tools and scenario approach. It concludes that transition to the "Low-Carbon Russia" scenarios must be accomplished in 2020—2030 or sooner, not only to mitigate emissions, but to block potential energy shortages and its costliness which can hinder economic growth.

scholarly journals LEAP-Based Greenhouse Gases Emissions Peak and Low Carbon Pathways in China’s Tourist Industry

2021 ◽  
Vol 18 (3) ◽  
pp. 1218
Author(s):  
Dandan Liu ◽  
Dewei Yang ◽  
Anmin Huang
Keyword(s):  
Greenhouse Gas ◽  
Global Climate ◽  
Ghg Emissions ◽  
Control Measures ◽  
Growth Potential ◽  
Planning System ◽  
Tourist Industry ◽  
Low Carbon ◽  
Carbon Reduction ◽  
Co2 Equivalent

China has grown into the world’s largest tourist source market and its huge tourism activities and resulting greenhouse gas (GHG) emissions are particularly becoming a concern in the context of global climate warming. To depict the trajectory of carbon emissions, a long-range energy alternatives planning system (LEAP)-Tourist model, consisting of two scenarios and four sub-scenarios, was established for observing and predicting tourism greenhouse gas peaks in China from 2017 to 2040. The results indicate that GHG emissions will peak at 1048.01 million-ton CO2 equivalent (Mt CO2e) in 2033 under the integrated (INT) scenario. Compared with the business as usual (BAU) scenario, INT will save energy by 24.21% in 2040 and reduce energy intensity from 0.4979 tons of CO2 equivalent/104 yuan (TCO2e/104 yuan) to 0.3761 Tce/104 yuan. Although the INT scenario has achieved promising effects of energy saving and carbon reduction, the peak year 2033 in the tourist industry is still later than China’s expected peak year of 2030. This is due to the growth potential and moderate carbon control measures in the tourist industry. Thus, in order to keep the tourist industry in synchronization with China’s peak goals, more stringent measures are needed, e.g., the promotion of clean fuel shuttle buses, the encouragement of low carbon tours, the cancelation of disposable toiletries and the recycling of garbage resources. The results of this simulation study will help set GHG emission peak targets in the tourist industry and formulate a low carbon roadmap to guide carbon reduction actions in the field of GHG emissions with greater certainty.

scholarly journals Greenhouse gas emissions profiles of neighbourhoods in Durban, South Africa – an initial investigation

2017 ◽  
Vol 30 (1) ◽  
pp. 191-214 ◽  
Author(s):  
Meryl Jagarnath ◽  
Tirusha Thambiran
Keyword(s):  
Greenhouse Gas ◽  
Ghg Emissions ◽  
Mitigation Strategies ◽  
Low Carbon ◽  
Economic Activities ◽  
Emissions Inventory ◽  
High Emission ◽  
Development Goals ◽  
Reduce Emissions ◽  
The City

Because current emissions accounting approaches focus on an entire city, cities are often considered to be large emitters of greenhouse gas (GHG) emissions, with no attention to the variation within them. This makes it more difficult to identify climate change mitigation strategies that can simultaneously reduce emissions and address place-specific development challenges. In response to this gap, a bottom-up emissions inventory study was undertaken to identify high emission zones and development goals for the Durban metropolitan area (eThekwini Municipality). The study is the first attempt at creating a spatially disaggregated emissions inventory for key sectors in Durban. The results indicate that particular groups and economic activities are responsible for more emissions, and socio-spatial development and emission inequalities are found both within the city and within the high emission zone. This is valuable information for the municipality in tailoring mitigation efforts to reduce emissions and address development gaps for low-carbon spatial planning whilst contributing to objectives for social justice.

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