The present deliverable focuses on the environmental evaluation using Life Cycle Assessment (LCA) methodology of the RESTORE prototype, which combines the Organic Rankine cycle / Heat pump and Thermochemical Energy Storage technology. The following processes are taken into account when conducting the LCA study: i) upstream processes: raw material supply chains (e.g., Novec 649 supply chain, copper sulphate supply chain, oil procurement and production, RESTORE prototype construction) ii) thermal energy charging and discharging cycles; and iii) downstream processes: recycling of Novec 649, copper sulphate, and oil; wastewater treatment and purification. Traditional Life Cycle Assessment (LCA) methodology has been employed to thoroughly address each of the four stages of LCA: 1) defining the objective, parameters, and limits of the system 2) assessing the input-output inventory 3) evaluating the impact on the environment 4) analysing the results while offering recommendations for improved performance.