This dynamic model is complementary to the 'Life Cycle Assessment of GHG Emissions of e-NG' report completed by Worley Consulting for the eNG Coalition. We conducted a Life Cycle Assessment (LCA) of greenhouse gas (GHG) emissions of the e-NG value chain. The LCA of alternative products, including conventional LNG, green and blue hydrogen, green and blue ammonia, e-methanol, and blue methanol were also undertaken to facilitate a comprehensive comparison with the LCA results of e-NG.
This dynamic model is intended to support the e-NG Coalition with further analysis on the production of e-NG and alternative pathways. The model is based directly on the basis, products, pathways, and parameters included in the report above.
Key mass balance parameters, assumptions, constants, and references are defined on this page.
The default scenario parameters in this model include production of e-NG in Texas with export to the Netherlands. The base case pathway assumes that biogenic CO2 is captured as a by-product from a bioethanol plant, or alternatively industrial CO2 is captured from the flue gas of a combined cycle gas turbine (CCGT) power plant. The electrolyser and methanation units are assumed to be co-located within the battery limits of the e-NG facility. The base case assumes 100% renewable power within battery limits of the facility and grid power consumption for all ancillary equipment.
Additional details regarding assumptions, boundaries, inventory, study parameters, or references cited in the model can be found in the study report. Belowis a high level schematic of the overall e-NG value chain.
