Marginal production technologies for life cycle inventories

  • Bo P. Weidema
  • Niels Frees
  • Anne-Merete Nielsen
LCA methodology


Marginal technologies are defined as the technologies actually affected by the small changes in demand typically studied in prospective, comparative life cycle assessments. Using data on marginal technologies thus give the best reflection of the actual consequences of a decision. Furthermore, data on marginal technologies are easier to collect, more precise, and more stable in time than data on average technologies. A 5-step procedure is suggested to identify the marginal technologies. The step-wise procedure first clarifies the situation in which the marginal should apply, and then identifies what specific technology is marginal in this situation. The procedure is illustrated in two examples: European electricity production and pulp and paper production.


European electricity scenario marginal technology LCA Life Cycle Assessment (LCA) methodology marginal technology marginal technology LCA pulp and paper production marginal technology LCA 


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Copyright information

© Ecomed Publishers 1999

Authors and Affiliations

  • Bo P. Weidema
    • 1
  • Niels Frees
    • 1
  • Anne-Merete Nielsen
    • 1
  1. 1.Institute for Product DevelopmentLyngbyDenmark

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