Research Capacity, Scientific Collaboration, and Renewable- Energy Deployment Across Europe: A Longitudinal Systems Analysis

Europe’s renewable-energy transition depends on interactions among scientific capability, institutions, investment, infrastructure, and resource conditions. This study examines whether national renewable-energy publication-based research activity and cross-country scientific collaboration are associated with subsequent renewable-electricity capacity development across Europe. A harmonised, database-defined Web of Science–Scopus corpus of 52,534 renewable-energy publications is integrated with population, GDP, and IRENA installed-capacity data for 2015–2025. Technology-specific publications per million inhabitants are related to subsequent changes in installed capacity per million inhabitants over one-, two-, and three-year horizons using country and year fixed effects with two-way clustered standard errors. For Total RES, point estimates are positive across all horizons (0.63, 1.99, and 3.96 MW per million inhabitants per additional publication per million inhabitants), but all primary 95% confidence intervals include zero. Technology-specific estimates are heterogeneous and imprecise. A complementary network analysis of 435 country pairs finds virtually no association between normalised scientific collaboration and similarity in deployment trajectories (Spearman ρ=−0.028). The analytical novelty of the study lies in integrating publication-based research activity, scientific-collaboration structure, technology-specific deployment, and multiple short forward horizons within a common European framework. Empirically, the estimates remain imprecise and do not support a simple research-to-deployment pipeline; the observed patterns are compatible with partial and heterogeneous coupling rather than establishing it as a system property. The findings imply that scientific activity should be considered alongside complementary implementation conditions such as policy stability, finance, permitting, grid access, infrastructure, and industrial capability.