The task within which this deliverable is framed aims at assessing the environmental, economic and social impacts of the HYPERGRYD solutions. The task is divided into 3 sub-tasks, assessing the three pillars of sustainability such as environmental, economic and social impacts. SubTask 5.6.1 Environmental impact study: Life Cycle Assessment (LCA): LCA is the key methodology utilised to perform the environmental study and derive the impacts of the applied technology. LCA is used to analyse the given processes and performances of the systems in the Project. The study will also benefit from digital twin simulation study of the living labs as local energy markets with the following KPIs: energy bill cost, self-consumption and self-sufficiency.SubTask 5.6.2 Study on economic impacts and benefits through Life Cycle CostsAnalysis (LCC): The economic dimension is another key aspect of the project and will strongly influence the implementation of the targeted technologies in the different scenarios. Life Cycle Cost analysis (LCC) of the developed solutions is performed in accordance with ISO 15686-5:2008 and to the Code of Practice suggested by SETAC “Environmental Life Cycle Costing”. The LCC allows estimating the total costs (OPerating Expense, OPEX and CAPital Expenditure, CAPEX) to be incurred in the design, development, construction, production, operation, maintenance over their life cycle. Furthermore, comparison analysis of all the proposed alternatives with benchmarks will be performed to quantify the economic savings and potential benefits of the technical solutions.SubTask 5.6.3 Study on social and health impacts and benefits throughSocial Life Cycle Assessment (S-LCA): Social impacts along the entire value chain must also be taken into account when developing or installing new technologies/solutions and services under a sustainable approach. S-LCA, based on the UNEP/SETAC guidelines, also follows a life cycle approach, but the impacts in this case are related to socio-economic aspects and comprise human rights, working conditions, health and safety, socio-economic repercussion, and so forth.