Emerging Trend in Life Cycle Assessment of Various Photo-voltaic Systems

This paper seeks to study the sustainability and environmental well-being of PV-based electricity generation systems by performing a thorough case study of life cycle assessment (LCA) of solar PV based electricity generation systems. Lifecycle analysis is an useful tool for examining the environmental characteristics of a product or technology from its origin to de-commissioning. Mass and energy flow over the complete production process starting from silica extraction to the final panel assembling has been observed. Life cycle assessment (LCA) studies of five common photovoltaic (PV) technologies, i.e., mono-crystalline (mono-Si), multi-crystalline (multi-Si), amorphous silicon (a-Si), CdTe thin film (CdTe) and CIS thin film (CIS) are presented in this work. The results depicts that, among the five common PV systems, the CdTe PV system presents the best environmental performance with reference to energy payback time (EPBT) and greenhouse gases (GHG) emission rate due to its low life-cycle energy needs and relatively high conversion efficiency. Meanwhile, the mono-Si PV system depicts the worst because of its high energy intensity during the solar cells manufacturing process. The LCA result shows that PV technologies are already justified to be very sustainable and environmental-friendly. With the emerging of new manufacturing technologies, the environmental robustness of PV technologies is assumed to be further enhanced in the near future.

[1]  Lin Lu.  Investigation on characteristics and application of hybrid solar-wind power generation systems , 2004 .

[2]  Vasilis Fthenakis,et al.  Greenhouse-gas emissions from solar electric-and nuclear power : A life-cycle study , 2007 .

[3]  W. Beckman,et al.  Evaluation of hourly tilted surface radiation models , 1990 .

[4]  E. Alsema,et al.  Environmental Aspects of PV Power Systems , 1997 .

[5]  L. P. Hunt.  Total energy use in the production of silicon solar cells from raw materials to finished product , 1976 .

[6]  Hans-Jürgen Dr. Klüppel,et al.  ISO 14041: Environmental management — life cycle assessment — goal and scope definition — inventory analysis , 1998 .

[7]  R. Tronstad,et al.  Environmental life cycle assessment of the Elkem Solar Metallurgical process route to solar grade silicon with focus on energy consumption and greenhouse gas emissions , 2008 .

[8]  E. A. Alsema,et al.  Energy pay-back time of photovoltaic energy systems: present status and prospects , 1998 .

[9]  V.M. Fthenakis,et al.  Life Cycle Energy Demand and Greenhouse Gas Emissions from an Amonix High Concentrator Photovoltaic System , 2006, 2006 IEEE 4th World Conference on Photovoltaic Energy Conference.

[10]  N. K. Bansal,et al.  Energy Analysis of Solar Photovoltaic Module Production in India , 1995 .

[11]  E. Alsema,et al.  Life Cycle Analysis of Solar Module Recycling Process , 2005 .

[12]  K. Knapp,et al.  Empirical investigation of the energy payback time for photovoltaic modules , 2002 .

[13]  Eric Hu,et al.  Life cycle assessment and evaluation of energy payback time on high-concentration photovoltaic power generation system , 2010 .

[14]  Kosuke Kurokawa,et al.  Life-cycle analyses of very-large scale PV systems using six types of PV modules , 2010 .

[15]  Kosuke Kurokawa,et al.  A comparative study on cost and life‐cycle analysis for 100 MW very large‐scale PV (VLS‐PV) systems in deserts using m‐Si, a‐Si, CdTe, and CIS modules , 2008 .

[16]  Yubo Jiao,et al.  Siemens and siemens-like processes for producing photovoltaics: Energy payback time and lifetime carbon emissions , 2011 .

[17]  Hyung Chul Kim,et al.  Emissions from photovoltaic life cycles. , 2008, Environmental science & technology.

[18]  Helmut Schaefer,et al.  Hidden energy and correlated environmental characteristics of P.V. power generation , 1992 .

[19]  Vasilis Fthenakis,et al.  Sustainability of photovoltaics: The case for thin-film solar cells , 2009 .

[20]  A. Masini,et al.  Simplified life-cycle analysis of PV systems in buildings: present situation and future trends , 1998 .

[21]  S. Ryding.  ISO 14042 Environmental management • Life cycle assessment • life cycle impact assessment , 1999 .

[22]  M. J. de Wild Scholten,et al.  Life Cycle Assessment of Photovoltaics: update of ecoinvent data V2.0 , 2008 .

[23]  Evert Nieuwlaar,et al.  Energy viability of photovoltaic systems , 2000 .

[24]  Ronald Wilson,et al.  The embodied energy payback period of photovoltaic installations applied to buildings in the U.K. , 1996 .

[25]  Hyung Chul Kim,et al.  Energy payback and life‐cycle CO2 emissions of the BOS in an optimized 3·5 MW PV installation , 2006 .

[26]  G. Keoleian,et al.  Application of life‐cycle energy analysis to photovoltaic module design , 1997 .

[27]  Anna Stoppato,et al.  Life cycle assessment of photovoltaic electricity generation , 2008 .

[28]  Roberto Dones,et al.  Life Cycle Assessment for Emerging Technologies: Case Studies for Photovoltaic and Wind Power (11 pp) , 2005 .

[29]  E. Alsema,et al.  Environmental Impact of Crystalline Silicon Photovoltaic Module Production , 2005 .

[30]  Kazuhiko Kato,et al.  An evaluation on the life cycle of photovoltaic energy system considering production energy of off-grade silicon , 1997 .

[31]  K. Hynes,et al.  An assessment of the environmental impacts of thin film cadmium telluride modules based on life cycle analysis , 1994, Proceedings of 1994 IEEE 1st World Conference on Photovoltaic Energy Conversion - WCPEC (A Joint Conference of PVSC, PVSEC and PSEC).

[32]  Ismat Nawaz,et al.  Embodied energy analysis of photovoltaic (PV) system based on macro- and micro- level , 2006 .

[33]  Gregory A. Keoleian,et al.  Amorphous silicon photovoltaic modules: a life cycle design case study , 1996, Proceedings of the 1996 IEEE International Symposium on Electronics and the Environment. ISEE-1996.

[34]  Gregory A. Keoleian,et al.  Modeling the life cycle energy and environmental performance of amorphous silicon BIPV roofing in the US , 2003 .

[35]  Wim Turkenburg,et al.  Greenhouse gas emissions associated with photovoltaic electricity from crystalline silicon modules under various energy supply options , 2011 .

[36]  Henri Lecouls,et al.  ISO 14043: Environmental management · life cycle assessment · life cycle interpretation , 1999 .

[37]  J. K. Kaldellis,et al.  Energy pay-back period analysis of stand-alone photovoltaic systems , 2010 .

[38]  E. A. Alsema,et al.  Reduction of the environmental impacts in crystalline silicon module manufacturing , 2007 .

[39]  Lin Lu,et al.  Environmental payback time analysis of a roof-mounted building-integrated photovoltaic (BIPV) system in Hong Kong , 2010 .

[40]  Vasilis Fthenakis,et al.  Methodology Guidelines on Life Cycle Assessment of Photovoltaic Electricity 3rd Edition , 2016 .

[41]  P. Sánchez‐Friera,et al.  Analysis of degradation mechanisms of crystalline silicon PV modules after 12 years of operation in Southern Europe , 2011 .

[42]  Marco Raugei,et al.  Life cycle impacts and costs of photovoltaic systems: Current state of the art and future outlooks , 2009 .

[43]  Kosuke Kurokawa,et al.  A comparative study on life cycle analysis of 20 different PV modules installed at the Hokuto mega‐solar plant , 2011 .

[44]  E. Alsema,et al.  PV power systems and the environment: results of an expert workshop , 1998 .

[45]  Gregory A. Keoleian,et al.  Life cycle design of amorphous silicon photovoltaic modules , 1997 .

[46]  Silvia Bargigli,et al.  Life cycle assessment and energy pay-back time of advanced photovoltaic modules : CdTe and CIS compared to poly-Si , 2007 .

[47]  M. Raugei,et al.  ENERGY AND LIFE CYCLE ASSESSMENT OF THIN FILM CdTe PHOTOVOLTAIC MODULES , 2005 .

[48]  Wolfgang Palz,et al.  ENERGY PAY-BACK TIME OF PHOTOVOLTAIC MODULES , 1991 .

[49]  P. Ineichen,et al.  A new simplified version of the perez diffuse irradiance model for tilted surfaces , 1987 .

[50]  Kazuhiko Kato,et al.  A life-cycle analysis on thin-film CdS/CdTe PV modules , 2001 .

[51]  E. Alsema.  Energy pay‐back time and CO2 emissions of PV systems , 2000 .

[52]  Erik Alsema,et al.  Energy requirements of thin-film solar cell modules—a review , 1998 .

[53]  Kwok-pan Cheng.  Energy payback time and greenhouse gas emission analysis of a roof-mounted BIPV in Hong Kong , 2010 .

[54]  Andreas Sumper,et al.  Life-cycle assessment of a photovoltaic system in Catalonia (Spain) , 2011 .

[55]  Ulrike Jahn,et al.  Operational performance of grid‐connected PV systems on buildings in Germany , 2004 .

[56]  Paul Cristian ANDREI.  SIMULATION RESULTS OF LIFE-CYCLE ASSESSMENT OF 30 KWP PV SYSTEM INSTALLED AT UNIVERSITY POLITEHNICA OF BUCHAREST ROMANIA , 2012 .

[57]  Kazuhiko Kato,et al.  Energy pay‐back time and life‐cycle CO2 emission of residential PV power system with silicon PV module , 1998 .

[58]  Danny H.W. Li,et al.  Study of models for predicting the diffuse irradiance on inclined surfaces , 2005 .

[59]  Michael Dale,et al.  A Comparative Analysis of Energy Costs of Photovoltaic, Solar Thermal, and Wind Electricity Generation Technologies , 2013 .

[60]  J. Michalsky,et al.  Modeling daylight availability and irradiance components from direct and global irradiance , 1990 .

[61]  Jo Dewulf,et al.  Life Cycle Analysis to estimate the environmental impact of residential photovoltaic systems in regions with a low solar irradiation , 2011 .

[62]  Riccardo Battisti,et al.  Evaluation of technical improvements of photovoltaic systems through life cycle assessment methodology , 2005 .

[63]  Gregory A. Keoleian,et al.  Parameters affecting the life cycle performance of PV technologies and systems , 2007 .

[64]  Kazuhiko Kato,et al.  A preliminary study on potential for very large-scale photovoltaic power generation (VLS-PV) system in the Gobi desert from economic and environmental viewpoints , 2003 .