The Unassuming Economist

From a paper by Princewill Okwoche, Abdiaziz Abdikadir Ahmed, and Emmanuel Aondongusha Asu:

“East Africa has recorded strong economic growth over the past three decades alongside a steady rise in carbon emissions, raising concerns about whether the region can sustain growth without worsening environmental pressures. This study incorporates key macroeconomic drivers of carbon emissions using panel data for 9 countries from 1990 to 2023, aiming to differentiate between capital-driven and trade-driven globalization. Additionally, the output-emissions nexus is re-examined. Empirical analysis employs the panel fully modified ordinary least squares with robustness checks for heterogeneity and cross-section independence, using panel quantile regression and fixed effects with Driscoll and Kraay standard errors. The results show, first, strong support for the pollution haven hypothesis, as FDI consistently raises emissions across specifications. Second, the environmental effect of trade is mixed and conditional. Trade appears pollutions-increasing in simple nonlinear models (without controls) but becomes insignificant once controls are imposed. An emissions-reducing effect emerges in specifications modeling income nonlinearity and at higher emissions quantiles. Third, the income-emissions nexus follows a monotonic cubic form with a single inflection point, where emissions rise with income at an increasing rate initially, before beginning to decelerate at higher income levels. Finally, urbanization, financial development, and especially energy intensity are robust positive drivers of emissions. The results emphasize the need for stronger environmental governance around FDI, cleaner trade integration, and reforms that reduce energy intensity and guide urban and financial development toward a low-carbon path. We discuss other policy recommendations based on the findings.”

From a paper by Yannan Zhou, Ying Lu, Yu Yang, Yan Cheng, Ze He, Yuxin Wang, and Yuli Shan:

“In an increasingly globalized world, energy security is no longer solely determined by direct energy imports but also by complex, cross-border flows of embodied energy embedded within traded goods and services. This study investigates how these embodied energy transfers reshape national energy dependencies and risk exposures within global production networks. Using a multi-regional input-output (MRIO) model based on GTAP 11 and IEA data, this study develops indicators of embodied energy import dependency and diversification, and introduces an innovative energy-risk mask method to identify the spatial sourcing tiers of energy risks embedded in international trade. Our findings show that while global embodied energy dependency has declined slightly since 2000, highly globalized economies such as Singapore and Luxembourg remain extremely reliant on external energy inputs. In addition, countries including Norway and China exhibit structurally concentrated embodied energy import sources, increasing their exposure to potential supply chain disruptions. Moreover, over 50% of global medium- and high-risk embodied energy is transmitted through long-distance trade, with large emerging economies like China and India heavily reliant on energy embedded in imports from geopolitically unstable regions. These risks are often obscured by conventional energy security metrics, which fail to capture the hidden dependencies of complex global supply chains. This study calls for the integration of embodied energy flow considerations into national energy strategies, emphasizing the need for diversified sourcing, upstream risk monitoring, and trade-energy policy coordination to enhance resilience in a geopolitically interconnected world.”

From a paper by Thomas Bourany , and Jordan Rosenthal-Kay:

“To combat global warming, climate policies like carbon taxes, renewable subsidies, and carbon tariffs must be implemented to phase out fossil fuel consumption and lower emissions. Who are the winners and losers of such policies? Through a simple Integrated Assessment Model with heterogeneous countries and international trade in goods and energy, we study both the costs of implementing these policies unilaterally, and the local costs and global gains of international policy cooperation. To do so, we express and decompose welfare changes under different policy regimes to the first order as a function of sufficient statistics that depend on observables and identifiable elasticities like nations’ energy mix, energy rents, trade shares, energy supply and demand elasticities, and damage parameters. We show that climate change has non-trivial reallocation effects through international trade in goods and energy. Pursuing unilateral policies generates strong leakage effects, primarily through energy trade. Global climate policy cooperation mitigates leakage, but not all countries have an incentive to participate. Regional climate clubs operate differently: an EU-wide club reduces global emissions but creates internal winners and losers, while an ASEAN climate club achieves smaller global gains but delivers welfare increases for member nations.”

From a paper by Md Qamruzzaman, Md. Adnan Hoque, and Md. Ratib Khan:

“This study examines the impact of renewable energy consumption, financial globalisation, digitisation, trade freedom, and financial development on income inequality across the G7, E7, and N11 economies from 1990 to 2022. Using CS-ARDL as the baseline estimator to account for cross-sectional dependence and long-run dynamics, the analysis is reinforced with the AMG, CCEMG, and Driscoll–Kraay estimators for robustness, while the dynamic panel GMM addresses potential endogeneity. Nonlinear and distributional heterogeneity were explored using Panel Threshold Regression, Quantile Regression (QR-MM), and Markov Switching models. The results consistently indicate that renewable energy, digitisation, financial globalisation, and trade freedom contribute to reducing income inequality, whereas financial development exacerbates disparities, with the effects being more pronounced in emerging economies (E7 and N11) than in advanced economies (G7). Threshold and quantile analyses reveal that renewable energy and digitisation exert more substantial equalising effects once institutional quality and digital penetration surpass critical levels under conditions of higher inequality. Regime-switching estimations showed a stabilising role during economic stress. These findings suggest that expanding renewable energy and digital infrastructure, and maintaining open trade policies, can help mitigate inequality, particularly in emerging economies, though the benefits of financial development require inclusive frameworks and regulatory safeguards. By integrating multiple advanced econometric techniques, this study provides new evidence on the interconnected roles of globalisation, the energy transition, and digital transformation in shaping income distribution across different economic contexts.”

From a paper by Li Xie, and Zhisheng Huang:

“We incorporate the characteristics of energy price management systems in developed countries and China into a dynamic stochastic general equilibrium model (DSGE) respectively, examine the differences in the impact of international energy price shocks on the countries’ inflation under the two types of energy price management systems, and then analyze the role of developed countries’ energy price management system (DC-EPMS) and China’s energy price management system (CN-EPMS) in the process of international energy price shocks affecting inflation. The results indicate that CN-EPMS is more effective in mitigating the negative impact of international energy price shocks on inflation compared to DC-EPMS in developed countries. Under the DC-EPMS, non-state-owned enterprises in a dominant position in the energy market, faced with international energy price shocks, will be driven by profit-maximizing behaviors to transfer the fluctuations in international energy prices to domestic energy prices and their expectations, thereby triggering inflation in developed countries; under the CN-EPMS, state-owned energy enterprises as policy implementation tools, faced with international energy price shocks, have played a functional role in safeguarding energy supply and maintaining energy price stability through energy price control and policy-oriented financial support, thereby stabilizing the energy price expectations of domestic energy consumers and effectively blocking the transmission of international energy price shocks to the inflation.”