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How to benchmark in LCA? 


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Benchmarking in Life Cycle Assessment (LCA) involves comparing the environmental performance of products or buildings to reference values or targets. Various methods can be utilized for benchmarking, such as data envelopment analysis (DEA) and determination of reference values. The process includes analyzing distributions of environmental performance data, calculating benchmarks based on indicators, and understanding the implications of different calculation methods on benchmark classification and value positioning. Benchmark values for LCA in the building sector typically range from 15 to 35 kg CO2 eq/m2.a for full life cycle impacts, encompassing embodied and operational impacts. To establish effective benchmarks, it is crucial to consider the assessment method, functional equivalence, scope, applications, and communication strategies, ensuring alignment with industry standards and regulatory requirements.

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Benchmarking in LCA involves evaluating tools like Tally and Athena IE, comparing user inputs, outputs, and life-cycle inventory data to establish a baseline for whole-building assessments.
Benchmarking in LCA involves analyzing the distribution of environmental performance data to define benchmarks, considering the impact on classification and decision-making in different product categories.
Benchmarking in LCA involves establishing reference values for global warming potential. IEA EBC Annex 72 cases suggest targets around 10-20 kg CO2e/m2/y for buildings, aiding stakeholders in assessing performance.
Benchmarking in LCA involves comparing environmental impacts of buildings using set criteria. Methods, values, scope, applications, and communication are key aspects analyzed for effective benchmarking.
Benchmarking in LCA can be achieved through methods like data envelopment analysis (DEA) and determination of reference values, aiding in interpreting Environmental Product Declarations (EPDs) by comparing product LCA results.

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