Sustainable transition pathways with high penetration of variable renewable energy in the coal-based energy systems

Meha, Drilon; Pfeifer, Antun; Sahiti, Naser; Schneider, Daniel Rolph; Duić, Neven

doi:10.1016/j.apenergy.2021.117865

Cited by 20 publications

(6 citation statements)

References 36 publications

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“…Therefore, in most countries, electricity is strategic and subject to governmental regulation. Thus, there are important public policies and initiatives related to the use of coal as a fuel, including point paths for energy transition (Meha et al , 2021), given that coal power has advantages in terms of safety, economy and stability (Li et al , 2020).…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Coal-fired electricity generation in Brazil under public regulation: security-of-supply assessment

Battesini

Koppe

2023

IJESM

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Purpose This study aims to propose an approach to assess the security of supply (SS) in a coal-fired electricity generation supply chain subject to public price regulation in Brazil. This study characterizes the Brazilian scenario of coal-fired electricity generation, which represents less than 3.5% of the energy sources. Design/methodology/approach Data from six mining companies that supply a coal plant were analyzed in a case study. The risks were characterized and objectively estimated through a synthetic multidimensional index. Structural changes in the earnings before interest, taxes, depreciation, amortization and exploration indicator time series of coal companies (CC) were statistically detected. Findings Empirical evidence demonstrates that the supply chain has a low disruption risk (SS index equal to 0.74). However, when suppliers are individually analyzed, 48.64% of all coal shows moderated disruption risk, and 2.51% is under high risk. In addition, this study finds a drop in the financial results of CC related to public regulation of coal prices. This impacts the security of coal supply. Research limitations/implications This study discusses the influence of legal and regulatory policy risks in a coal power generation supply chain and the implications of the SS index as a management tool. Originality/value A novel SS index is presented and empirically operationalized, and its dimensions – environmental, occupational, operational, economic-financial and supply capacity – are analyzed.

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Section: Theoretical Backgroundmentioning

confidence: 99%

Coal-fired electricity generation in Brazil under public regulation: security-of-supply assessment

Battesini

Koppe

2023

IJESM

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“…C Life cycle = C energy consumption + C gas + C postmine (7) The carbon emission related to energy consumption can be calculated by the total energy consumption times the carbon intensity coefficient widely used in the Chinese industry, δ = 2.66 kg CO 2 /kgce [67].…”

Section: Carbon Emission In Life Cycle Coal Electricity Productionmentioning

confidence: 99%

“…Coal has long been one of the biggest shares in the mix of energy sources due to its low cost and high accessibility in China [6,7]. However, the economic benefit comes hand in hand with negative impacts on the environment [8][9][10].…”

Section: Introduction 1background On Carbon Neutrality and China's Co...mentioning

confidence: 99%

Toward a Carbon-Neutral State: A Carbon–Energy–Water Nexus Perspective of China’s Coal Power Industry

Xie

Qi²,

Zhang³

et al. 2022

Energies

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Carbon neutrality is one of the most important goals for the Chinese government to mitigate climate change. Coal has long been China’s dominant energy source and accounts for more than 70–80% of its carbon emissions. Reducing the share of coal power supply and increasing carbon capture, utilization, and storage (CCUS) in coal power plants are the two primary efforts to reduce carbon emissions in China. However, even as energy and water consumed in CCUS are offset by reduced energy consumption from green energy transitions, there may be tradeoffs from the carbon–energy–water (CEW) nexus perspective. This paper developed a metric and tool known as the “Assessment Tool for Portfolios of Coal power production under Carbon neutral goals” (ATPCC) to evaluate the tradeoffs in China’s coal power industry from both the CEW nexus and financial profits perspectives. While most CEW nexus frameworks and practical tools focus on the CEW nexus perturbation from either an external factor or one sector from CEW, ATPCC considers the coupling effect from C(Carbon) and E(Energy) in the CEW nexus when integrating two main carbon mitigation policies. ATPCC also provides an essential systematic life cycle CEW nexus assessment tool for China’s coal power industry under carbon-neutral constraints. By applying ATPCC across different Chinese coal industry development portfolios, we illustrated potential strategies to reach a zero-emission electricity industry fueled by coal. When considering the sustainability of China’s coal industry in the future, we further demonstrate that reduced water and energy consumption results from the energy transition are not enough to offset the extra water and energy consumption in the rapid adoption of CCUS efforts. However, we acknowledge that the increased energy and water consumption is not a direct correlation to CCUS application growth nor a direct negative correlation to carbon emissions. The dual effort to implement CCUS and reduce electricity generation from coal needs a thorough understanding and concise strategy. We found that economic loss resulting from coal reduction can be compensated by the carbon market. Carbon trading has the potential to be the dominant profit-making source for China’s coal power industry. Additionally, the financial profits in China’s coal power industry are not negatively correlated to carbon emissions. Balance between the carbon market and the coal industry would lead to more economic revenues. The scenario with the most rapid reduction in coal power production combined with CCUS would be more sustainable from the CEW nexus perspective. However, when economic revenues are considered, the scenario with a moderately paced energy transition and CCUS effort would be more sustainable. Nevertheless, the ATPCC allows one to customize coal production scenarios according to the desired electricity production and emission reduction, thus making it appropriate not only for use in China but also in other coal-powered regions that face high-energy demands and carbon neutrality goals.

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“…Coal energy is the foundation and pillar of our nation’s energy structure, accounting for approximately 70% of our total energy consumption. − Its significance in our national economy cannot be overstated as the primary energy source supporting industrial production and the daily lives of urban and rural inhabitants. , While our country actively promotes the development and utilization of new and clean energy sources, coal energy will continue to play a crucial role in the short term. − Given the distinctive characteristic of our coal-dominated energy structure, preventing coal mining accidents holds immense importance, particularly the risks of coal and gas outbursts. , The most effective preventive measure is the drilling and extraction of gas, which not only helps to mitigate hazards but also enables the utilization of gas resources, generating additional economic and social benefits for the mines. − Gas extraction from coal seams represents the most effective approach to gas management, with coal seam drilling being the only means of achieving gas extraction . Gas extraction ensures the safe mining of working faces and allows for the acquisition of gas resources, resulting in supplementary economic and social benefits for the mines. − High-gas mines are the primary target for gas extraction in our country, and data indicates that nearly 95% of the coal seams within these high-gas mines are soft .…”

Section: Introductionmentioning

confidence: 99%

Preferred Ratio and Properties of Microfoam Drilling Fluid for Gas Extraction in Soft Coal Seams

Cheng,

Hou,

Luo

et al. 2024

Energy Fuels

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During the gas extraction drilling process, especially the soft coal seam drilling process, due to the constraints of geological conditions, technical conditions, and other factors, it is easy to encounter stuck holes, blowout, lost circulation, and hole collapse, which affect the realization of efficient gas management. In the petroleum industry, microfoam drilling fluid has unique advantages as a drilling and flushing medium. Through the response surface method, this study conducts a preliminary experimental study on the types of foaming agents, foam stabilizers, modified bentonite materials, and filtrate reducers and determines the optimal formula as 3.98% modified bentonite + 0.586% compound foaming agent + 0.776% foam stabilizer + 1% sulfonated phenolic resin + 2% carboxymethyl starch sodium. The performance of the microfoam drilling fluid system is tested. Subsequently, a simulated soft coal seam drilling test is carried out to verify the effectiveness of the developed directional microfoam drilling fluid for protecting coal rock holes. This microfoam drilling fluid system technology can improve the drilling quality of the sealing section of coal seam gas extraction drilling and effectively improve the gas extraction rate of coal mines.

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Sustainable transition pathways with high penetration of variable renewable energy in the coal-based energy systems

Cited by 20 publications

References 36 publications

Coal-fired electricity generation in Brazil under public regulation: security-of-supply assessment

Coal-fired electricity generation in Brazil under public regulation: security-of-supply assessment

Toward a Carbon-Neutral State: A Carbon–Energy–Water Nexus Perspective of China’s Coal Power Industry

Preferred Ratio and Properties of Microfoam Drilling Fluid for Gas Extraction in Soft Coal Seams

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