Detecting global electric consumption patterns from a spatial perspective and analyzing their inequality at different scales
摘要
Electric power resources are crucial for modern society and play an essential role in driving social progress. UN Sustainable Development Goal 7 calls for ensuring access to affordable, reliable, sustainable, and modern energy for all. Achieving equitable energy distribution is both an economic issue and a major challenge concerning social equity and sustainable development. Using spatial downscaling to obtain fine-scale electric power consumption (EPC) distribution for inequality analysis is imperative. This study proposes an E-NPBL framework integrating nighttime light, population density, building volume, and land use to model high-quality EPC spatial datasets. It analyzes EPC inequality from three perspectives: spatial heterogeneity, urban–rural gaps, and its relationship with development and environmental outcomes. Key findings: (1) The EPC grid data achieves high accuracy in state-level validation across the U.S., China, Australia, Brazil, and South Africa (R² = 0.96, RMSE = 2.82E10, MRE = 32.38%). (2) Under rapid urbanization, the urban–rural EPC gap is narrowing in high-income countries but widening in middle- and low-income countries. (3) Inequality in EPC relative to population, GDP, and CO₂ emissions is decreasing over time. This spatial analysis helps policymakers identify energy-disparate regions, crucial for advancing sustainable development.