Energy

    Carbon Footprints of Wind Farm

    Life-cycle energy and global warming potentials of specific New Zealand wind farms have been assessed for Contact Energy and Trust Power. These assessments included production, transport, maintenance and disposal impacts over the wind farms’ lives. These studies assisted in Environment Court hearings, and with communication of environmental impacts of the wind farms.

    Prepared by Scion (2007-2009)

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    NZ Fuel and Electricity Energy & Life Cycle Emission Factors

    This paper describes the results and methodology used for determining the primary energy, carbon dioxide and greenhouse gas emission factors for New Zealand electricity and fuels.  The analysis is based on using life cycle analysis (LCA) methodology so consequently includes all upstream as well as in-use emissions.  The results have also been compared to the MED published in-use emissions.

    Prepared by AgriLINK NZ (2009)

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    Primary Energy and Greenhouse Gas Emissions From Tallow Based Biodiesel

    This study provides a life cycle assessment of biodiesel derived from tallow.  Primary energy and greenhouse gas emissions were assessed from the farmer's paddock to the exit gate of the biodiesel plant. Tallow based biodiesel was found to have 49% less greenhouse gas emissions than fossil based diesel.  The full report is available from EECA or by contacting the author.

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    The Sustainability of Brazilian Sugarcane Bioethanol

    This report is a literature review into the sustainability of Brazilian sugarcane based bioethanol. An LCA analysis of greenhouse gas emissions and an energy balance was conducted. An LCA analysis of greenhouse gas emissions and an energy balance was conducted. Other impact categories investigated included production, biodiversity, air and water pollution, soil erosion, economic impacts, food versus fuel and social impacts. The review found that bioethanol from Brazilian sugarcane is sustainable; subject to some qualifiers.

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