Résumé : The paper first provides for Latin America and the Caribbean, country specific synthetic quantitative measures of the degree of adoption of common governance reforms of the electricity sector accounting for four key dimensions (market structure, private sector participation, regulatory autonomy and operational organization). These synthetic indicators are then correlated with standard policy performance outcomes measures. This suggests that, as of 2018, reforms could be statistically significantly associated with higher technical quality but not with social or service improvements. This implies that almost 30 years after their adoption and despite recurring reports of failures in these three decades, governance reforms are still not delivering on some promised payoffs, notably the reduction of the energy poverty issues.