简报文件 5——能源效率

This briefing analyzes energy efficiency trends and policy goals in China and the United States. It highlights the U.S. steady decline in energy intensity since 1950 and China's fluctuating efficiency rates, including a significant reversal between 2000 and 2005. Both nations have set ambitious mid-century net-zero or carbon-neutral goals, utilizing energy efficiency as a primary lever. The document also details a history of bilateral cooperation through frameworks like the U.S.-China Energy Efficiency Forum and the Energy Efficiency Action Plan, focusing on industrial, building, and transport sectors.

• Global energy efficiency improved by 1.3% in 2023 compared to the previous year, though this is lower than the 1.7% annual rate seen from 2011 to 2020 and the 2% rate from 2021 to 2022. To achieve global net-zero emissions by 2030, the International Energy Agency (IEA) indicates that the annual energy efficiency growth rate must double from 2% to 4%.
• The United States has seen a steady decline in energy intensity since 1950, with the average annual rate of decline increasing to 2% between 1970 and 2022. By 2022, energy intensity had dropped to approximately half of its 1985 level. This progress is attributed to fuel economy standards, appliance and building codes, technological advancements in power generation, and a structural economic shift toward service-oriented industries.
• China's energy efficiency trends have fluctuated: it improved by nearly 5% annually from 1980 to 2000, but reversed between 2000 and 2005, with energy intensity increasing by 2.2% annually due to WTO accession and the expansion of energy-intensive industries. Following the 11th Five-Year Plan (2006-2010), efficiency improved by 4% annually from 2005 to 2015, before slowing to 2% annually between 2015 and 2023.
• The United States aims for net-zero emissions by 2050, with energy efficiency expected to contribute approximately 1GtCO2e (22% of the energy sector's reductions) through improved building insulation, HVAC performance, and efficient electronics. Additionally, the U.S. has committed to increasing the global average annual energy efficiency growth rate to over 4% by 2030.
• China's current targets include reducing energy intensity by 13.5% and CO2 intensity by 18% between 2021 and 2025 relative to 2020 levels. Long-term goals include reaching a peak in CO2 emissions by 2030 and achieving carbon neutrality by 2060, with non-fossil energy accounting for over 80% of primary energy consumption by 2060.

APA

World Resources Institute (n.d.). 简报文件 5——能源效率. https://files.wri.org/d8/s3fs-public/2024-07/2024-energy-efficiency-briefing-CN.pdf

Chicago

World Resources Institute. 简报文件 5——能源效率. n.d. https://files.wri.org/d8/s3fs-public/2024-07/2024-energy-efficiency-briefing-CN.pdf.

Wikipedia

{{cite report |author=World Resources Institute |title=简报文件 5——能源效率 |url=https://files.wri.org/d8/s3fs-public/2024-07/2024-energy-efficiency-briefing-CN.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{worldresourcesinstitutend, author = {{World Resources Institute}}, title = {{简报文件 5——能源效率}}, institution = {World Resources Institute}, url = {https://files.wri.org/d8/s3fs-public/2024-07/2024-energy-efficiency-briefing-CN.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }