Energy Lifecycle Inputs in Food Systems: A Comparison of Local versus Mainstream Cases

Abstract There is increasing interest from consumers in local food systems (LFS) in which consumers purchase their food from predominantly local sources. This paper investigates the claim that LFS use less energy and emit less greenhouse gasses than mainstream food systems (MFS), such as supermarkets. We calculated the energy required during part of the lifecycle of a selected number of food items sourced by different food supply systems and their resulting greenhouse gas emissions. Data were collected from literature, interviews with producers and suppliers of food, experts, and internet. Our results show that in the base simulation of full summer season and only inland, open-air production, energy uses and carbon dioxide emissions are slightly higher in LFS compared to the MFS, but in the same order of magnitude. LFS can be more sustainable by optimizing their transport and storage through minimizing the transport distance and by increasing the stored and traded quantities. Supermarkets could be more sustainable through choosing in-season food products that are homegrown in open air as well and by minimizing distances and storage times. Also consumers could have a large impact through a consistent choice for these in-season, inland products and through their shopping trips.

[1]  Harold R. Harvey.  To Shift or Not to Shift , 1937 .

[2]  Gene Bazan.  Our Ecological Footprint: Reducing Human Impact on the Earth , 1997 .

[3]  S. Kuznesof,et al.  Policy initiatives for regional foods: some insights from consumer research , 1998 .

[4]  B. Nygard,et al.  De-globalization of Food Markets? Consumer Perceptions of Safe Food: The Case of Norway , 1998 .

[5]  C. Hinrichs,et al.  Embeddedness and local food systems: notes on two types of direct agricultural market☆ , 2000 .

[6]  G. Huylenbroeck,et al.  Consumer Valuation of Short Market Channels for Fresh Food Through Laddering , 2001 .

[7]  Jules Pretty,et al.  Agri-Culture: Reconnecting People, Land and Nature , 2002 .

[8]  William D. Heffernan,et al.  Opening Spaces through Relocalization: Locating Potential Resistance in the Weaknesses of the Global Food System , 2002 .

[9]  Allison Brown.  Farmers' market research 1940–2000: An inventory and review , 2002 .

[10]  Andy Jones,et al.  An Environmental Assessment of Food Supply Chains: A Case Study on Dessert Apples , 2002, Environmental management.

[11]  K. Grunert,et al.  Consumers' food choice and quality perception , 2002 .

[12]  Sanderine Nonhebel,et al.  A method to determine land requirements relating to food consumption patterns , 2002 .

[13]  Brian Halweil,et al.  Home Grown: The Case for Local Food in a Global Market , 2002 .

[14]  Angela Tregear,et al.  In search of the concerned consumer: UK public perceptions of food, farming and buying local , 2003 .

[15]  A. Carlsson-kanyama,et al.  Food and life cycle energy inputs: consequences of diet and ways to increase efficiency , 2003 .

[16]  Vincent Mahieu,et al.  Well-to-wheels analysis of future automotive fuels and powertrains in the european context , 2004 .

[17]  Charlotte Leire,et al.  Agri-Culture. Reconnecting people, land and nature , 2004 .

[18]  Marijke Meul,et al.  Energieverbruik en -efficiëntie op vlaamse melkvee-, akkerbouw- en varkensbedrijven , 2005 .

[19]  C. Wallgren.  Local or global food markets: A comparison of energy use for transport , 2006 .