This study investigates the impacts of environmental performance measured by CO2 emission from industrial processes and renewable capacity measured by electricity production from renewable sources excluding hydroelectric on economic growth in emerging and developing economies. The analysis uses time-series data over the period 2000–2025 and three World Bank aggregates based on historical series of income levels (low, lower-middle, and upper-middle). Foreign direct investment inflows, trade openness, urbanization, and in an original way, the country policy and institutional assessment (CPIA) index—as a proxy for the quality of the institutional and business environment—were included as control variables. The results show that the growth effects of environmental performance, renewable capacity, and institutional quality differ markedly across income levels. Growth persistence emerges only in upper-middle-income economies, whereas in low- and lower-middle-income aggregates growth does not depend significantly on its previous levels. Carbon intensity from industrial processes is positively and significantly associated with growth only in the lower-middle-income group, indicating that carbon-based industrial production still fuels expansion at intermediate development stages. Renewable capacity does not exert significant growth effects in any group. Trade openness promotes growth in lower-middle- and upper-middle-income economies but not in low-income ones, foreign direct investment inflows are never significant, and urbanization hinders growth in the upper-middle-income group, where the CPIA index is marginally growth-enhancing. Overall, the findings confirm that the growth-environment nexus is strongly conditioned by income levels and institutional contexts. Growth remains carbon-dependent at lower-middle income levels, renewables do not deliver growth dividends, and sound institutions and openness support growth only beyond certain development thresholds. Decarbonization should therefore be paired with structural reforms, institutional strengthening, and staged integration into global markets to foster sustainable and inclusive growth.



