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Open research questions in Energy, Environment, and Transportation Policies

122 gap statements mined from Energy, Environment, and Transportation Policies papers in our 4.5M-paper local library, which holds 1,377 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The study needs to capture the temporal pattern in petrol prices.

    Petrol Price Estimation in Pakistan Under Predictive Approach: A Comparative Framework in Systematic and Simple Random Sampling · 2026 · DOI

  • There is a gap in using systematic sampling for petrol price estimation. Prior work has not addressed the use of systematic sampling for estimating the average petrol price in Pakistan.

    Petrol Price Estimation in Pakistan Under Predictive Approach: A Comparative Framework in Systematic and Simple Random Sampling · 2026 · DOI

  • It notes that the analysis of the correlation between the substitution of machinery and equipment and the decrease of electricity consumption and oil use is limited.

    Energy Price Shocks and Short-Term Reactions of Firms: The Case of the German Energy Crisis in 2022 · 2026 · DOI

  • Future research is recommended to incorporate spatially explicit modeling approaches, such as GIS-based dispersion analysis, as well as real-time air quality monitoring data to enhance model resolution.

    Dynamic System Modeling of PM₂.₅ Emissions and Concentrations in DKI Jakarta Based on BAU, Moderate, and Aggressive Scenarios · 2026 · DOI

  • There is a need to examine the cyclical components of carbon emissions and GDP in the Turkish economy.

    THE CYCLICAL DYNAMICS OF CARBON EMISSIONS: A MARKOV-SWITCHING APPROACH FOR TURKIYE · 2026 · DOI

  • The European effect (N) remains weak in the post-accession period, suggesting that EU membership alone was insufficient to substantially alter domestic fossil fuel consumption patterns.

    Sectoral Shift-Share Analysis of Fossil Energy Consumption and Economic Growth in Croatia · 2026 · DOI

  • The main research problem is to determine how the EU's energy transition is progressing and whether it should be considered in the context of the determinants of economic growth.

    Energy Transition in the Context of the Determinants of Long-Term Economic Growth in the European Union · 2026 · DOI

  • There is a need for effective methods to monitor and improve energy efficiency in the service sector. The service sector has been underresearched in terms of energy efficiency analysis.

    Decarbonization of EU Services Sector: Shadow Carbon Prices Approach in Energy Efficiency Analysis · 2026 · DOI

  • The originality of this paper lies in its focused application of the SCP concept to the underresearched tertiary sector, proposing it as a vital tool for evaluating policy effectiveness and guiding the EU's transition to a low-carbon service economy by providing a more nuanced understanding of the economic trade-offs involved in reducing environmental impact of energy consumption in the service sector.

    Decarbonization of EU Services Sector: Shadow Carbon Prices Approach in Energy Efficiency Analysis · 2026 · DOI

  • The gap in the literature is the lack of research on the impact of carbon taxation on GDP and economic growth. The study identifies a need for further research on the relationship between carbon taxation and economic growth.

    Impact of carbon revenue on EU gross domestic product · 2026 · DOI

  • The research problem and the gap in the literature arise because existing scientific work typically examines carbon dioxide pricing only as a means of reducing emissions or analyses the use of revenues for social or environmental programmes, but does not examine its influence on GDP, investment, or economic growth.

    Impact of carbon revenue on EU gross domestic product · 2026 · DOI

  • The study notes that the true value of CO₂ remains unpriced in the absence of a global carbon trading market.

    Does the digital economy impact global carbon shadow price? A study on nonlinear relationships based on the dynamic threshold model · 2026 · DOI

  • Future research should address this gap by expanding empirical investigations on the nexus between digital financial inclusion and green transportation across global economies. A key limitation of this study is that the digital finance literature remains largely focused on China, primarily because extensive research has been conducted in this area in China.

    Transition to green transportation under the lens of energy inflationary pressures: the empowering role of digital financial inclusion · 2026 · DOI

  • The imbalance between charging infrastructure supply and demand is a key bottleneck restricting the development of the EV industry. There is a need to examine the strategic interactions among the government, gas stations, and consumers in the context of EV development.

    Evolutionary dynamics of multi-stakeholder strategies in gas station transformation under VOC emission reduction policies · 2026 · DOI

  • The lack of research on predicting product returns using machine learning. The need for a more comprehensive evaluation of predictive models on different datasets.

    Evaluating Predictive Models for Reducing E-Commerce Returns and Associated Carbon Emissions · 2026 · DOI

  • Further analysis of the reconciled data can be conducted to investigate the alignment of emissions and cost incentives. The data reconciliation approach can be applied to other energy-related datasets. The uncertainty around the timing and duration of the IBDR event for a given participant can be studied.

    Retail Electricity Costs and Emissions Incentives Are Misaligned for Commercial and Industrial Power Consumers · 2026 · DOI

  • While localized lockdowns emerged as pivotal Non-pharmaceutical Interventions (NPIs) during the mid-to-late phases of the COVID-19 pandemic, the precise impacts on residential mobility remain understudied, including pre-and post-lockdown travel comparisons, ‘bounce-back’, and long and short-term adjustments.

    Measuring lockdown travel rebound: Experimental insights from the Hong Kong COVID-19 omicron outbreak · 2026 · DOI

  • Existing methods have limitations, such as the need to choose a penalty parameter. The problem of solving stochastic optimal control problems driven by fully-coupled FBSDEs is challenging.

    A deep learning method for solving stochastic optimal control problems driven by fully-coupled FBSDEs · 2026 · DOI

  • There is a gap in understanding the energy rebound effect in China's household sector. Prior work has not fully addressed the impact of energy rebound on household welfare. The study identifies a need for policy interventions to support fair transition and decarbonization.

    Household energy rebound and welfare changes in china: implications for energy efficiency improvement · 2026 · DOI

  • The government's traditional static reward and punishment policies are inadequate for aligning with manufacturers' decision-making characteristics. There is a lack of understanding of the impact of dynamic reward-punishment mechanisms on new energy vehicle manufacturers' production decisions.

    Government-consumer dual perspective: how dynamic reward-punishment mechanisms and consumer preferences shape new energy vehicle manufacturers’ production decisions—an evolutionary game analysis · 2026 · DOI

  • The cost and Scope 2 carbon emission implications of electrification are opaque for both power consumers and utilities. The variance in marginal emissions factors across grid regions and time-of-day obscures emissions reduction benefits of electrification.

    Retail Electricity Costs and Emissions Incentives Are Misaligned for Commercial and Industrial Power Consumers · 2026 · DOI

  • The study identifies a gap in the literature on the effect of clean fuel technology for cooking and access to electricity on CO₂ emissions. The study aims to fill this gap by providing empirical evidence on the importance of clean fuel technology.

    Effect of clean energy on CO₂ emissions in G-20 countries using STIRPAT approach · 2026 · DOI

  • Changing industry behaviour is a challenge - The lack of awareness among adults and children regarding healthy choices is a concern - Confusing marketing and hidden sugars contribute…

    700 days on: What has happened to Government pledge to ban energy drinks sales to children? · 2026 · DOI

  • There is a lack of awareness among adults and children regarding healthy choices - The role of schools in shaping habits and expectations regarding sugar consumption is not fully…

    700 days on: What has happened to Government pledge to ban energy drinks sales to children? · 2026 · DOI

  • The study identifies a gap in the existing literature on inventory systems with one-way substitution of items under inflation and carbon emissions. The paper aims to fill this gap by developing a mathematical model to analyze the total cost structure.

    Optimizing substitution of items under the effect of carbon emissions and inflation · 2026 · DOI

Most-cited papers in Energy, Environment, and Transportation Policies

Most recent work

Find a gap in your own Energy, Environment, and Transportation Policies sub-topic

This page shows what the Energy, Environment, and Transportation Policies literature already flags as unresolved. To narrow it to your specific question, search the Research Gap Finder: the search is free with a free account and lists the papers closest to your topic first. Unlocking that topic (50 credits, charged once) fills the comparison table from our 4.5M-paper local library and writes the gaps from its rows.

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Open questions raised by papers listed on this page include: (1) There is a need to examine the cyclical components of carbon emissions and GDP in the Turkish economy (“THE CYCLICAL DYNAMICS OF CARBON EMISSIONS: A MARKOV-SWITCHING APPROACH FOR…”, 2026); (2) There is a need for effective methods to monitor and improve energy efficiency in the service sector (“Decarbonization of EU Services Sector: Shadow Carbon Prices Approach in Energy…”, 2026); (3) The gap in the literature is the lack of research on the impact of carbon taxation on GDP and economic growth (“Impact of carbon revenue on EU gross domestic product”, 2026); (4) Future research should address this gap by expanding empirical investigations on the nexus between digital financial inclusion and green transportation across global economies (“Transition to green transportation under the lens of energy inflationary…”, 2026); (5) There is a need to examine the strategic interactions among the government, gas stations, and consumers in the context of EV development (“Evolutionary dynamics of multi-stakeholder strategies in gas station…”, 2026). 122 gap statements have been mined from Energy, Environment, and Transportation Policies papers in our 4.5M-paper local library, which holds 1,377 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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