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Implications of integrating electricity supply dynamics into life cycle assessment: a case study of renewable distributed generation

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  • Amor, Mourad Ben
  • Gaudreault, Caroline
  • Pineau, Pierre-Olivier
  • Samson, Réjean

Abstract

Electricity supply is frequently cited as a significant hot spot in life cycle assessment (LCA) results. Despite its importance, however, LCA research continues to overuse simplified methodologies regarding electricity supply modeling. This work aims to demonstrate the usefulness of electricity trade analysis (proposed model) for integrating the short-term dynamics of electricity supply and refining LCA results. Distributed generation using renewable energy is applied as a case study to demonstrate how electricity trade analysis provides more refined estimates when environmental impact abatements are assessed compared with the conventional (simplified) approaches in LCA. Grid-connected photovoltaic panel (3 kWp mono- and poly-crystalline) and micro-wind turbine (1, 10 and 30 kW) environmental impact abatements are investigated by determining the displaced marginal electricity production on an hourly basis. The results indicate that environmental impact abatements calculated using the developed short-term time horizon approach can be significantly different (up to 200% difference) from those obtained using a simplified approach. Recommendations are provided to LCA practitioners to address this issue of differing results.

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Bibliographic Info

Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 55087.

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Date of creation: 29 Mar 2014
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Handle: RePEc:pra:mprapa:55087

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Keywords: Life cycle assessment; Short-term marginal technology; Electricity dynamics; Wind; Solar.;

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  1. Amor, Mourad Ben & Pineau, Pierre-Olivier & Gaudreault, Caroline & Samson, Réjean, 2011. "Electricity trade and GHG emissions: Assessment of Quebec's hydropower in the Northeastern American market (2006-2008)," Energy Policy, Elsevier, Elsevier, vol. 39(3), pages 1711-1721, March.
  2. Soimakallio, Sampo & Kiviluoma, Juha & Saikku, Laura, 2011. "The complexity and challenges of determining GHG (greenhouse gas) emissions from grid electricity consumption and conservation in LCA (life cycle assessment) – A methodological review," Energy, Elsevier, Elsevier, vol. 36(12), pages 6705-6713.
  3. Sivaraman, Deepak & Keoleian, Gregory A., 2010. "Photovoltaic (PV) electricity: Comparative analyses of CO2 abatement at different fuel mix scales in the US," Energy Policy, Elsevier, Elsevier, vol. 38(10), pages 5708-5718, October.
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