2023-03-15-世界银行-评估可再生能源政策对发展中国家脱碳的影响（英）_72页_1mb

Summary of Policy Research Working Paper 10329

Title: Assessing the Impact of Renewable Energy Policies on Decarbonization in Developing Countries
Authors: Clara Galeazzi, Jevgenijs Steinbuks, and Laura Diaz Anadón
Date: February 2023

Key Findings

1. Methodology:

   • The study analyzed seven renewable energy policy packages across 100+ developing countries over four decades.
   • Advanced econometric techniques (instrumental variables, country/regional fixed effects) were used to address endogeneity and omitted variable bias.
   • Data from the World Bank's Regulatory Indicators for Sustainable Energy (RISE) was employed, along with political and trade affinity measures as instrumental variables.

2. Main Results:

   • Limited Effectiveness: Only 15.7% of policy coefficients were statistically significant (p-value < 0.10) in influencing decarbonization after three years.
   • Counterintuitive Effects: Many policies had unintended negative effects, increasing fossil fuel reliance, though effectiveness improved over 5-7 years.
   • Sailing Ship Effect: Incumbent fossil technologies dampen short-term effects of renewable policies, but renewables gain ground over time.
   • Counterparty Risk Standout: Policies mitigating financial risks (e.g., government guarantees, auctions) showed the most immediate and consistent positive impact.

3. Policy Implications:

   • Significant gaps exist in institutional capacity and finance for implementing renewable policies effectively.
   • International climate finance and institutional reforms are essential for unlocking decarbonization pathways.
   • A holistic, long-term approach is needed, including policy mixes, monitoring, and adaptive governance.

Conclusion

The study highlights the mixed effectiveness of renewable energy policies in developing countries, underscoring the need for complementary measures like climate finance and institutional reforms. While challenges persist, there is evidence that policy effectiveness improves over time, offering hope for sustainable energy transitions.