Rooftop Solar Surge in Poor Countries Overloads Grids and Widens Wealth Gap
A rapid, self-funded expansion of rooftop solar across several developing nations has made solar a major power source, with Pakistan now generating about a quarter of its peak electricity from it. However, this bottom-up shift is causing wealthier households to abandon the grid, leaving poorer residents to bear rising costs and straining network stability. Analysts warn that without government oversight, the solar buildout could deepen economic inequality and destabilize power systems in countries like Nigeria and Zambia.
The surge is largely unregistered, with analysts relying on customs records and satellite imagery to track it. In Nigeria, an estimated 96 percent of solar capacity operates off-grid, while Pakistan's official statistics may miss up to three-quarters of actual deployment. This bottom-up movement stems from expensive, unreliable grid power rather than government incentives.
Growth rates are staggering. Sri Lanka's rooftop capacity increased sixfold between 2020 and 2025, and Lebanon's recorded capacity rose tenfold. In Yemen, over half the population now uses solar as their primary lighting source. Across six developing nations, solar generation has grown more than sixfold since 2019, reshaping electricity mixes dramatically.
The unchecked solar buildout could fracture social cohesion in developing nations. As affluent households abandon the grid, fixed network costs shift to poorer ratepayers, potentially raising their bills and deepening energy poverty. Grid instability may also result from fluctuating solar output without proper management. This dynamic could undermine public trust in utilities and governments, while the clean energy transition risks becoming a driver of inequality rather than a remedy.