<p>The study explores the predictive link between energy use and health outcomes for a panel of eight South Asian countries. Using a panel data technique with Seemingly Unrelated Regressions and country-specific bootstrap critical values, the study finds a positive, bidirectional causal relationship between electricity consumption and life expectancy across the eight countries. Renewable electricity consumption increases life expectancy in Bhutan and the Maldives, but decreases it in Bangladesh, India, and Pakistan, likely due to socio-economic disparities and inadequate infrastructure. Electricity consumption also shows a bidirectional causality with under-5 mortality, where renewable electricity reduces under-5 mortality in Afghanistan, Bhutan, Maldives, and Nepal, but increases it in Bangladesh and Pakistan, partly due to unreliable renewable electricity sources. Additionally, electricity consumption correlates with higher NCDs mortality in six countries, though renewable electricity reduces NCDs mortality in most nations except Bhutan, Nepal, and Afghanistan. Electricity consumption and per capita health expenditure exhibit positive bidirectional causality, with the effects of renewable electricity varying across countries. Lastly, electricity consumption predictively precedes increases in air pollution in most countries studied, with bidirectional causality in Afghanistan and the Maldives, and unidirectional causality from air pollution to renewable electricity in others. Overall, the findings indicate that both the level and composition of energy consumption are critical in shaping health outcomes, underscoring the need for reliable electricity supply and context-specific renewable energy policies in South Asia.</p>