Life Cycle Energy and GHG Emissions Analyses

Life Cycle Energy and GHG Emissions Analyses 6.1 Life Cycle Analysis Methods... 

This Section investigates life cycle energy and GHG emissions of a PV electrolytic H2 system. The boundaries of the life cycle energy and GHG emissions analyses are cradle to grave. Five life cycle stages are evaluated ... 

The organization of the study is as follows. In the first Section, a H2 production and distribution system is described. Secondly, capital and levelized H2 price estimates are investigated for each of the H2 system components. Thirdly, a life cycle evaluation of primary energy and GHG emissions in the H2 fuel cycle is performed. Sensitivity analyses are performed for the H2 price and the life cycle energy and GHG emissions estimates. The study concludes with a summary of findings and suggestions for future research. 

For biomass plants, GHG emissions vary with the biomass properties, the energy intensity of the fuel cycle, the plant technology and its efficiency. Life-cycle analyses of different biomass technologies report emissions between 10 and 100 g COj-eq/kWh (Pehnt, 2006 Weisser, 2007 Koroneos et ah, 2008). 

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