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In spite of the drive toward environmental sustainability and the attainment of sustainable development goals (SDGs), coal, oil and natural gas energy utilization has remained the Turkey's largest energy mix. In view of this concern, this study examined the role of coal and oil energy utilization in environmental sustainability drive of Turkey from the framework of sustainable development vis-à-vis income expansion over an extended period of 1965–2017.

In this regard, the authors employ carbon emission as an environmental and dependent variable while the Gross Domestic Product per capita (GDPC), coal and oil energy consumption are the explanatory variables employed in the study.

The study found that both energy mixes (coal and oil) have a detrimental impact on the environment in both the short and long run, but oil consumption exerts a less severe impact as compared to coal energy. In addition, sustainable development via income growth is not feasible because the income–environmental degradation relationship follows a U-shaped pattern (invalidating the Environmental Kuznets curve, EKC hypothesis) especially when coal and oil remained the major source of lubrication to the economy. At least the EKC hypothesis is unattainable in Turkey as long as the country's major energy mix or primary energy (coal and oil) is in use, thus the application of other socioeconomic, macroeconomic policies might be essential.

Considering the lingering energy challenge associated with Turkey, this novel insight further presented useful policy perspectives to the government and stakeholders in the country's energy sector.

This evidence (the U-shaped relationship) is further ascertained when the aggregate primary energy is employed. Thus, this study provides a novel insight that attaining a sustainable economic growth in Turkey remained a herculean task as long as a more aggressive energy transition approach is not encouraged.

The growth of the Indian economy is accompanied by the rising trend of energy utilisation and its devastating effect on the environment. It is vital to understand the nexus between energy utilisation, climate and environment degradation and growth to devise a constructive policy framework for achieving the goal of sustainable growth. This study aims to analyse the long- and short-run association and direction of association between energy utilisation, carbon emission and growth of the Indian economy in the presence of structural break.

The study probes the association and direction of association between variables at both aggregate (total energy utilisation, total carbon emission and gross domestic product [GDP]) and disaggregates level (coal utilisation and coal emission, oil utilisation and oil emission, natural gas utilisation and natural gas emission along with GDP) over the time period of 50 years, i.e. 1971–2020. Autoregressive distributed lag model is used to examine the association between the variables and presence of structural break is confirmed with the help of Zivot–Andrews unit root test. To check the direction of association, vector error correction model Granger causality is performed.

Aggregate carbon emissions are affected positively by aggregate energy consumption and GDP in both short and long run. Bidirectional causality exists between total emissions and GDP, whereas a unidirectional causality runs from energy consumption towards carbon emission and GDP in the long run. At disaggregate level, consumption of coal energy impacts positively, whereas GDP influences coal emission negatively in the long run only. Furthermore, consumption of oil and GDP influences oil emissions positively in the long run. Lastly, natural gas is the energy source that has the fewest emissions in both short and long run.

There is a rapidly growing body of research on the connections and cause-and-effect relationships between energy use, economic growth and carbon emissions, but it has not conclusively proved how important the presence of structural breaks or changes within the economy is in shaping the outcomes of the aforementioned variables, especially when focusing on the Indian economy. By including the impact of structural break on the association between energy use, carbon emission and growth, where energy use and carbon emission are evaluated at both aggregate and disaggregate level, the current study aims to fill this gap in Indian literature.

The purpose of this paper is to construct historical perceptions of coal use in India and Japan in different historical time periods through the process of analyzing the narratives and discourses in academic, media and trade literatures.

In terms of methodology, this paper will utilize discourse theories/analysis and interpretive history to study the subject matter. In this paper, specific literatures on energy as well as general literatures on themes like technology are utilized.

The finding of the paper is that discourses and narratives about coal energy for example are constantly negotiated, constructed and then deconstructed again to fit and adapt to new realities, including the availability of newer technologies or priorities and concerns about the environment.

The research implication and originality of the paper is to demonstrate empirically the idea of the existence of narrative communities debating the use of coal energy in India and Japan. It highlights the communities of stakeholders interested in coal energy resource. The practical application and value of the ideas is the intellectual process of categorizing various contemporary narratives about coal energy use specific to two of the largest consumers and importers of coal in Asia. Through historical narratives of its past and recent coal use, the role and function of coal in the overall energy mix of India and Japan are instructive. The research limitation lies in its non‐quantitative nature and reliance on a combination of academic and trade secondary sources.

The purpose of this paper is to put forward countermeasures to ensure China's energy security based on an analysis of the world energy security situation and challenges China faces in the future in terms of energy security.

An induction approach is adopted to analyze the energy security situation of the world and that of China.

Although available energy resources can meet the medium and long‐term global energy demand, the world energy security faces lots of severe challenges in the aspects of demand and supply factors, infrastructure, geopolitics and strict environmental protection requirements, etc. China's energy supply security faces many challenges in the coming 20 ∼ 30 years or even in the long term. Taking external factors into consideration, the primary challenge is to ensure a stable and sustainable oil supply with reasonable prices. Though the external conditions are of great importance to China's energy security, the influences of domestic factors also need to be well recognized. With energy resources supply being the bedrock of energy security, the establishment of domestic energy market system and energy management framework will exert momentous impact upon the energy security. In addition, while the petroleum supply security is emphasized, attentions should at the same time be paid to the supply security of other energy products, especially to the supply of China's fundamental energy resource of coal.

The paper provides useful and timely analysis of world energy resources, world energy security situation and world economic performances.