Abstract
The spatial mismatch of energy resources and electricity demand in China drives the large-scale construction of power transmission infrastructure, which consumes a large amount of carbon-intensive products. However, a systematic accounting framework for the carbon emissions of power transmission infrastructure has not yet been established. This study for the first time compiles an embodied carbon emissions inventory covering 191 typical power transmission infrastructure projects in China in 2015, including 145 types of alternating current (AC) transmission line projects, 37 typical AC substation projects, 8 typical direct current (DC) transmission line projects and 1 typical DC converter station project. The inventory also shows the detailed inputs of all the projects. These data not only enable a quantitative assessment of the embodied carbon emissions of power transmission infrastructure in China but also provide essential information for climate mitigation policy design in the power sector.
Highlights
Background & SummaryThe spatial mismatch between China’s energy centres and load centres has led to China’s large-scale power transmission infrastructure construction[1,2]
In recent years, Chinese government attaches great importance to the construction of ultra-high voltage (UHV) power grids, which will lead to the acceleration of domestic power transmission infrastructure construction
Researchers have calculated greenhouse gas (GHG) emissions of transmission infrastructure in European regions[12], countries[13,14] and Northern Europe[15] and verified that transmission infrastructure construction has a great impact on climate
Summary
The spatial mismatch between China’s energy centres and load centres has led to China’s large-scale power transmission infrastructure construction[1,2]. There were limitations in the previous studies In these studies, only data of raw materials were collected to calculate GHG emissions caused by construction processes[16], and data of tools, vehicles, office equipment and other materials used in construction processes were not statistically complete. These studies were based on the production and construction data of developed regions such as Europe and provide limited guidance for large-scale transmission infrastructure construction in developing countries. Incorporating carbon emissions into the construction feasibility assessment of the project to achieve a more environmentally friendly construction process
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