Evaluating Cost-Effective Grid Solutions for Universal Electricity in

A new study published in Nature Communications evaluates how cost-effective grid expansion could be in delivering universal electricity access across Sub-Saharan Africa. Millions in the region remain off-grid, and the research focuses on the economic barriers and opportunities for extending infrastructure. Led by Kou, Hirmer, and Yang, the team used multi-dimensional modeling that blends demographic, geographic, and economic data to simulate grid extension costs under multiple scenarios, including capital investments, operations and maintenance, and possible subsidies. The findings suggest remote rural areas with low population densities remain costly, but targeted expansion zones near existing infrastructure and with higher population concentrations can substantially improve per-capita affordability. The study also argues affordability metrics often miss hidden household costs like connection fees and ongoing tariffs, and it highlights the role of capital versus operational costs and renewable integration.