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Numerous studies have linked the heterogeneous nature of national technological capabilities to the disparities in country-level low-carbon investment patterns. This study investigates how differences in national and regional technological capabilities can impact the pathway to a global net-zero energy system using an integrated assessment modeling approach. The study begins by developing a novel metric that captures the heterogeneity of national low-carbon technological endowments. The metric is then modeled to explore the regional and global low-carbon investment and CO2 abatement trends. Modeling results reveal that the heterogeneity of low-carbon technological competencies induces an asymmetry in low-carbon investments across countries and regions. This asymmetry is driven by a low-carbon investment gap created by developing economies with inferior technological capabilities. Conversely, frontier low-carbon technology regions increase their technology deployment efforts to compensate for the investment deficits. The resultant impact of the asymmetry leads to a moderate but non-trivial increase (i.e., 5.1 to 9.3%) in the policy cost for achieving the net-zero energy target. Insights gleaned from this computational thought experiment reassert the importance of supporting local technological capabilities in the context of global climate mitigation.
Apeaning et al. (Sun,) studied this question.