The environmental relevance of freshwater consumption in global power production
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Freshwater use and consumption is of high environmental concern. While research has primarily focused on agricultural water use, industrial water use has recently become more prominent. Because most industries employ relatively low amounts of water, our study focuses on electricity production, which is involved in almost all economic activities and has a considerable share of the global water consumption.
Materials and methods
Water consumption data for different power production technologies was calculated from literature. Due to the global importance of hydropower and the high variability of its specific water consumption, a climate-dependent estimation scheme for water consumption in hydroelectric generation was derived. Applying national power production mixes, we analyzed water consumption and related environmental damage of the average power production for all countries. For the European and North American countries, we further modeled electricity trade to assess the electricity market mix and the power-consumption related environmental damages. Using the Eco-indicator 99 single-score and compatible freshwater consumption damage assessments, the contribution of water consumption to the total environmental impact was quantified.
Results and discussion
Water consumption dominates the environmental damage of hydropower, but is generally negligible for fossil thermal, nuclear, and alternative power production. However, as the impact of water consumption has high regional variation, it can be relevant for many power technologies in water-scarce areas. The variability among country production mixes is substantial, both from a water consumption and overall environmental impact perspective. The difference between electricity production and market mixes is negligible for most countries, especially for big countries such as the USA. In Europe, where intensive international electricity trade exists, the difference is more significant. When contrasted with the relatively high uncertainties in water consumption figures particularly for hydropower, the additional error from using production mixes instead of market mixes is rather small.
Power production is one of the major global water consumers and involved in life cycles of almost any human activity. Covering the water-consumption-related environmental damage of power generation closes one important gap in life cycle assessment and also improves data availability for the emerging field of water footprints.
KeywordsDams Life cycle assessment Life cycle impact assessment Power production Regionalization Water consumption
We thank Ben Dziegielewski for sharing background data, Michael Boesch for advising on power plants and Chris Mutel for suggestions regarding input–output modeling and English proofreading. This work was supported by the Seventh Framework Programme of the European Commission.
- Chapagain AK, Hoekstra AY (2004) Water footprints of nations: Volume 1: Main report. Research report series no. 16. UNESCO-IHE, Delft, The NetherlandsGoogle Scholar
- Dziegielewski B, Bik T (2006) Water use benchmarks for thermoelectric power generation. Department of Geography and Environmental Resources. Southern Illinois University CarbondaleGoogle Scholar
- Energy Information Administration (2009) The international energy annual (IEA). http://www.eia.doe.gov/emeu/iea/contents.html. Accessed December 11 2009
- ENTSO-E (2010) ENTSO-E Statistical database. https://www.entsoe.eu/index.php?id=67. Accessed:5 May 2010
- EPRI (2002) U.S. Water consumption for power production—the next half century, technical report. Water & Sustainability (Volume 3). Electric Power Research Institute (EPRI)Google Scholar
- EPRI, U.S. Department of Energy (1997) Renewable energy technology characterizations. Washington, D.C, United StatesGoogle Scholar
- FAO (2004) Global map of monthly reference evapotranspiration—10 arc minutes. FAO Geonetwork. http://www.fao.org/geonetwork/srv/en/metadata.show
- Feeley TJ, Pletcher S, Carney B, McNemar AT (2006) Department of energy/national energy technology laboratory’s power plant-water R&D program. Department of Energy/National Energy Technology Laboratory (DOE/NETL), avilable at: http://www.netl.doe.gov/technologies/coalpower/ewr/pubs/Power%20Gen%202006_Water%20R&D.pdf
- Frischknecht R et al (2007) Electricity mix and electricity grid (German: Strommix und stromnetz). Sachbilanzen von Energiesystemen: Grundlagen für den ökologischen Vergleich von Energiesystemen und den Einbezug von Energiesystemen in Ökobilanzen für die Schweiz. Paul Scherrer Institut Villigen, Swiss Centre for Life Cycle Inventories, Dübendorf, SwitzerlandGoogle Scholar
- Frischknecht R, Steiner R, Jungbluth N (2008) Ökobilanzen: Methode der ökologischen knappheit—ökofaktoren 2006. Sr 28/2008. Öbu—Netzwerk für nachhaltiges Wirtschaften, Zurich, SwitzerlandGoogle Scholar
- Goedkoop M, Spriensma R (2001) The eco-indicator 99: A damage oriented method for life cycle impact assessment: Methodology report. Publikatiereeks produktenbeleid; nr. 36a, 3rd edn. Ministerie van Volkshiusvesting, Ruimtelijke Ordening en Milieubeheer, Den Haag, The NetherlandsGoogle Scholar
- Goedkoop M, Heijungs R, Huijbregts M, De Schryver A, Struijs J, van Zelm R (2009) Recipe 2008 - a life cycle impact assessment method which comprises harmonised category indicators at the midpoint and the endpoint level. Available at http://lcia.wik.is
- GWSP Digital Water Atlas (2008) Map 1: Water consumption of power plants (v1.0). Available online at http://atlas.Gwsp.Org
- Humbert S, Maendly R (2009) Characterization factors for damage to aquatic biodiversity caused by water use especially from dams used for hydropower. Paper presented at the LCA IX, Boston, 1 October 2009Google Scholar
- IPCC (2007) In: Solomon SD, Qin M, Manning Z, Chen M, Marquis KB, Averyt M, Tignor, Miller HL (eds) Climate change 2007: The physical science basis. Cambridge University Press, Cambridge, United Kingdom and New York, United StatesGoogle Scholar
- ISO (2006) ISO 14044: Environmental management—life cycle assessment—requirements and guidelines. International Organization for Standardization, Geneva, SwitzerlandGoogle Scholar
- National Atlas (2009) Major dams of the United States. http://www.nationalatlas.gov/mld/dams00x.html
- Pfister S, Hellweg S (2009) The water "Shoesize" Vs. Footprint of bioenergy. Proceedings of the National Academy of Sciences 106(35):E93–E94Google Scholar
- Pfister S, Stoessel F, Juraske R, Koehler A, Hellweg S (2009b) Regionalized LCIA of vegetable and fruit production: Quantifying the environmental impacts of freshwater use. In: Nemecek T, Gaillard G (eds) 6th International Conference on LCA in the Agri-Food Sector—towards a sustainable management of the Food chain, Zurich, June (2009b). Agroscope Reckenholz-Tänikon Research Station ART, Switzerland, pp 16–22Google Scholar
- Rockstrom J, Steffen W, Noone K, Persson A, Chapin FS, Lambin E, Lenton TM, Scheffer M, Folke C, Schellnhuber HJ, Nykvist B, de Wit CA, Hughes T, van der Leeuw S, Rodhe H, Sorlin S, Snyder PK, Costanza R, Svedin U, Falkenmark M, Karlberg L, Corell RW, Fabry VJ, Hansen J, Walker B, Liverman D, Richardson K, Crutzen P, Foley J (2009) Planetary boundaries: exploring the safe operating space for humanity. Ecol Soc 14(2):32Google Scholar
- Shiklomanov IA (2003) World water resources at the beginning of the 21st century. International hydrology series. Cambridge University Press, Cambridge, United KingdomGoogle Scholar
- SN Energie Gruppe (2008) Aquapower switzerland, news 2_2008. http://www.aquapower.ch/uploads/media/aquapower-news_2_2008.pdf. Accessed: June 2010
- Solley WB, Pierce RR, Perlman HA (1998) Estimated use of water in the united states in 1995. U.S. GEOLOGICAL SURVEY CIRCULAR 1200. USGS, Denver, United StatesGoogle Scholar
- Stern N (2007) Stern review: the economics of climate change. Cambridge University Press, Cambridge, United KingdomGoogle Scholar
- Stillwell AS, King CW, Webber ME, Duncan IJ, Hardberger A (2009) Energy-water nexus in Texas. The university of Texas at Austin, Austin, United StatesGoogle Scholar
- Torcellini P, Long N, Judkoff R (2003) Consumptive water use for U.S. power production. National Renewable Energy Laboratory (NREL), Colorado, United StatesGoogle Scholar
- United States Ecoinvent Centre (2008) Ecoinvent data v2.01. http://www.ecoinvent.org
- Zektser IS, Everett LG (2007) Groundwater resources of the world and their use. UNESCO Series on Groundwater BGR Hannover, GermanyGoogle Scholar