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This book uses energy and economic models to assess the potential for further energy-efficient improvements in the transport, building, industry and power sectors of China. The report starts with a modelling assessment of the role of energy efficiency in supporting China to achieve its Intended Nationally Determined Contribution (INDC) of reaching a peak in its greenhouse gas (GHG) emissions by around 2030. It concludes that the contribution of improvements in energy efficiency to China reducing its GHG emissions is between 67% and 80%, depending on whether the country reaches this peak in 2025, 2030, or 2035. The report continues to use the Long-Range Energy Alternatives Planning (LEAP) model to assess the potential for improvements in energy efficiency in the four key sectors.

For each sector, the study identifies key high-impact opportunities (HIOs) for improvements in energy efficiency, some technical, others structural. The technical HIOs are those based on specific technological improvements, such as more energy-efficient housing and more fuel-efficient cars. The structural HIOs involve changes in product mix and service mix, such as reducing the overcapacity in energy-intensive industries and increasing the use of public transit for passenger transport. Moreover, for each sector, the report also identifies barriers to the realization of the HIOs and offers a set of recommendations for how to address them.

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