KEYWORDS: Carbon, Matrices, Systems modeling, Power consumption, Power grids, Industry, Data modeling, Manufacturing equipment, Manufacturing, Algorithm development
The proposed "double carbon" target by the Chinese government underscores the importance of reducing carbon emissions in the power industry. The power industry, whose carbon emission accounts for about 43.1% of the overall energy-related carbon emissions, is one of the Chinese largest carbon-emitting industries. Calculating the carbon emissions flow in power systems helps to better reduce the use of conventional fossil fuel and complete the "double carbon" target. This paper first analyzes the full life-cycle carbon cost from the device perspective, thus setting a boundary for carbon accounting. Then the calculation method of power-carbon emissions flow is developed. Finally, the performance of the proposed method is evaluated based on the Lishui City power system.
Integrating energy systems with power-to-gas (P2G) technology is a new pathway for developing future low-carbon energy systems. This paper uses the Lishui Jinyun Water Photohydrogen Biomass Zero-Emission Pilot Project as an example to calculate its lifecycle carbon emissions and carbon reduction potential through the boundary definition and inventory statistics. Calculation results indicate that the main contributors to carbon emissions are manufacturing, such as producing and constructing machinery, equipment, and other materials. On the other hand, the carbon reduction potential of the project exceeds its carbon emissions over its whole lifecycle. Hence, coupling clean electricity and hydrogen can effectively reduce carbon emissions and play an essential role in achieving carbon neutrality targets.
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