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A general description of the calculation tools for Cost Benefit Analysis and Life Cycle Assessment of very low-energy houses

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The North Pass project (2009-2012) used primary energy and carbon dioxide as indicators for the environmental and climatic impact. The environmental assessment used the Life Cycle Assessment (LCA) methodology, suitable for studying global and certain regional
environmental impacts by calculation and evaluation of the inputs and outputs and the
potential environmental impacts of a product system throughout its life cycle. The four phases of a LCA – goal and scope definition, inventory analysis, impact assessment and
interpretation – are described.
Economic modelling and assessment made use of Life Cycle Cost analysis (LCC). LCC
is an economic assessment that accounts for the total cost of acquisition, operation,
maintenance, support and disposal of a product/system/service throughout its useful life. The purpose of life-cycle costing should be to quantify the life-cycle cost for input into a decisionmaking or evaluation process, and should usually also include parts from other evaluations.
The cost-benefit analysis (CBA) is proposed as an integrated methodology, where
environmental impacts are assessed in monetary terms, making them comparable to economic costs. The benefits of an option are compared with its associated costs (including the opportunity costs). The choice of time frame for the analysis as well as limitations and advantages are also discussed.

Task “Impact and saving potential of North European very low-energy houses in Northern Europe" of the NorthPass project analysed the savings potential and identified the success factors of North European very low-energy houses. The purpose of this report is to present the methodological background of the work and to introduce the methodology of Life Cycle Cost Analysis (LCC), Life Cycle Assessment (LCA) and Cost-Benefit Analysis (CBA).

This, and other NorthPass results reports can be uploaded from the project website