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Evaluation of two simplified LCA methods

Evaluation of two simplified LCA methods. Elisabeth Hochschorner and Göran Finnveden. Evaluation of two simplified LCA methods. The Environmentally Responsible Product Assessment matrix (ERPA method) MECO method. The environmentally responsible product assessment matrix (ERPA) .

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Evaluation of two simplified LCA methods

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  1. Evaluation of two simplified LCA methods Elisabeth Hochschorner and Göran Finnveden

  2. Evaluation of two simplified LCA methods • The Environmentally Responsible Product Assessment matrix (ERPA method) • MECO method

  3. The environmentally responsible product assessment matrix (ERPA) (Graedel, 1998)

  4. The MECO method (Pommer et al., 2001)

  5. Analysis • Cars driven on petrol, ethanol, and electricity from coal and water-power • Data from an earlier published quantitative LCA (Almemark et al 1999) and a database of fuel (Uppenberg et al 1999) • Independent analyses, without knowledge of the results from the earlier published quantitative LCA

  6. Results compared to the quantitative LCA. Qualitative information Toxicity Land use Production of consumables Weighting method Easiness Time Extent of arbitrariness The intention of the method Flexibility Criteria for the evaluation

  7. Results compared to the quantitative LCA • Decreased use of fossil energy and CO2-emissions depends on production of electricity • MECO: YES ERPA: NO • Increased use of other resources in the electric cars (for production on batteries) • MECO: YES ERPA: NO • The electrical car generates more solid residues • MECO: NO ERPA: NO

  8. Results from the evaluation

  9. Results from the evaluation, cont.

  10. Usefulness of qualitative simplified LCA methods • Identify critical aspects of products • Complement a quantitative LCA study

  11. MECO + Interpretation Simplifiedprocess tree Quantitative LCA Recommendation

  12. Closure • Hochschorner E. and Finnveden G. 2003. Evaluation of Two Simplified Life Cycle Assessment Methods. Int J LCA 8 (3) 119-128. • www.fms.ecology.su.se

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