EcoSolutions, a consultancy firm, is assisting a local municipality, the City of Atheria, in implementing a waste-to-energy project that aims to reduce methane emissions from the city\'s landfill. The project involves capturing landfill gas (LFG) and using it to generate electricity. As the Lead Implementer guiding the project under ISO 27017:2015 and ensuring alignment with ISO 14064-2:2019, you are tasked with evaluating the project\'s eligibility for carbon credits. Several factors have emerged during the initial assessment:\n\n1. A national regulation mandating LFG capture at landfills exceeding a certain size (Atheria\'s landfill falls under this regulation) is scheduled to take effect in two years.\n2. A neighboring municipality, Brightville, recently implemented a similar LFG capture project without carbon credits, citing cost savings from reduced energy bills.\n3. EcoSolutions projects a 15% internal rate of return (IRR) for the Atheria project, making it financially attractive even without carbon credit revenue.\n4. The project utilizes a novel membrane technology for methane separation that has not been widely adopted due to high initial investment costs.\n\nGiven these factors and the requirements of ISO 14064-2:2019, what is the MOST critical aspect that EcoSolutions must demonstrate to establish the additionality of the Atheria waste-to-energy project and ensure its eligibility for carbon credits?