Life Cycle Analysis Archives - KeyLogic https://www.keylogic.com/tag/life-cycle-analysis/ Tue, 17 Jun 2025 14:55:39 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.keylogic.com/wp-content/uploads/2021/07/cropped-cropped-KeyLogic_favicon-32x32.png Life Cycle Analysis Archives - KeyLogic https://www.keylogic.com/tag/life-cycle-analysis/ 32 32 Using Common Boundaries to Assess Methane Emissions: A Life Cycle Evaluation of Natural Gas and Coal Power Systems https://www.keylogic.com/using-common-boundaries-to-assess-methane-emissions-a-life-cycle-evaluation-of-natural-gas-and-coal-power-systems/ Wed, 25 Aug 2021 17:03:07 +0000 https://keylogic.wpengine.com/?p=1026 There is consensus on the importance of upstream methane (CH4) emissions to the life cycle greenhouse gas (GHG) footprint of natural gas systems, but inconsistencies among recent studies explain why some researchers calculate a CH4 emission rate of less than 1% whereas others calculate a CH4 emission rate as high as 10%. These inconsistencies arise from differences […]

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]]> There is consensus on the importance of upstream methane (CH4) emissions to the life cycle greenhouse gas (GHG) footprint of natural gas systems, but inconsistencies among recent studies explain why some researchers calculate a CH4 emission rate of less than 1% whereas others calculate a CH4 emission rate as high as 10%. These inconsistencies arise from differences in data collection methods, data collection time frames, and system boundaries. This analysis focuses on system boundary inconsistencies. Our results show that the calculated CH4 emission rate can increase nearly fourfold not by changing the magnitude of any particular emission source, but by merely changing the portions of the supply chain that are included within the system boundary.

Read more here: https://onlinelibrary.wiley.com/doi/full/10.1111/jiec.12394

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