Substation Construction and Operation ; Semi-Underground Substations

Unit processes/Systems/Construction
Reference year: 2023 - 2073

The literature has derived the carbon footprint of the semi-underground substation building at each stage of its life cycle, including the physicalization stage, operation stage, and construction and dismantling stage, through the establishment of a whole life cycle carbon emission model. The physical phase includes the production and transportation of building materials. Data set users must consider the specific geographical and climatic conditions of cold regions when interpreting the carbon emission data. The starting point for the data set usage is the publication time of the literature source, and the data is applicable over the substation's 50-year lifespan. The bill of quantities, construction drawings, and carbon emission factors for material production and transportation should be referenced for accurate carbon footprint calculation. It's important to apply the correct grid emission factors, which are influenced by policies such as the 'Notice on Doing a Good Job on the Management of Greenhouse Gas Emission Reporting for Enterprises in the Power Generation Industry in 2023-2025'.


Construction stage: The semi-underground substation is located in a cold area, with one underground floor, two floors above ground and three floors locally. It adopts reinforced concrete frame structure for the first floor and below, and steel frame structure for the first floor and above. The height of the building is 17.9m. The total floor area is 8402.6m2, and the total floor area above ground is 4982.6m2. Operation phase: In the substation, a large amount of residual heat is generated by the equipment in the main transformer room, distribution room, reactor room, capacitor room, cable layer, etc., and fans are needed to dissipate the heat, so as to ensure that the indoor temperature stays below 40°C. The substation is located in a cold area, and the building has 1 underground floor and 2 above ground floors.

Process type
Partially aggregated
LCI modeling approach
Multifunctional modeling
Aggregation type
Data provider
Review status
Tiangong LCI Data Working Group