It is vital to understand the fundamental factors driving such improvements, the curtailment reduction patterns across the countries and key regions, the experiences from the regional heterogeneity of curtailment reductions, and the policy implications available to strengthen wind power curtailment mitigation strategies  in the short and long term to accelerate China’s clean energy transition.

This study constructs an evaluation framework based on the logarithmic mean Divisia index approach to investigate these concerns. Furthermore, it reveals that the eminent contributors at the national scale are local power demand, power exports, and power structures.

However, the regional factor patterns oscillate significantly. In northwest China, power transmission is vital to reduce wind power curtailment. In north China, thermal power remains dominant because of its importance to national energy security, impeding its curtailment. Northeast China implements the peak-shaving auxiliary service market, promoting the power grid’s capability to consume more local wind power.

The fundamental settlement of the curtailment issue calls for market-oriented energy structure reforms to ensure sustainable low-carbon development. This study explains the essence of China’s renewable energy development and seeks reliable paths to accelerate wind power integration with policy measures and technical transformations to enhance the adaptability of the power grid system .

Highlights

  • Accelerating renewable energy power penetration is essential for carbon neutrality.
  • Wind power curtailment remains critical yet mitigated recently in China.
  • Among the key factors, local demand, exports, and power structure contribute the most to reducing wind power curtailment.
  • The factor attribution pattern varies among regions and shows regional heterogeneity.
  • Though improved, the curtailment challenge calls for sustainable power system structural reforms.