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Impact of power generation mix on life cycle assessment and carbon footprint greenhouse gas results / Marriott, J., Matthews, H.S. &#38; Hendrickson, C.T. Journal of Industrial Ecology, 14(6), 2010, pp. 919-928.http://onlinelibrary.wiley.com/doi/10.1111/j.1530-9290.2010.00290.x/abstractThe mix of electricity consumed in any stage in the life cycle of a  product, process, or industrial sector has a significant effect on the  associated inventory of emissions and environmental impacts because of  large differences in the power generation method used. Fossil-fuel-fired  or nuclear-centralized steam generators; large-scale and small-scale  hydroelectric power; and renewable options, such as geothermal, wind,  and solar power, each have a unique set of issues that can change the  results of a life cycle assessment. This article shows greenhouse gas  emissions estimates for electricity purchase for different scenarios  using U.S. average electricity mix, state mixes, state mixes including  imports, and a sector-specific mix to show how different these results  can be. We find that greenhouse gases for certain sectors and scenarios  can change by more than 100%. Knowing this, practitioners should  exercise caution or at least account for the uncertainty associated with  mix choice. (© Wiley) 