Energy Return on Energy Invested (ERoEI) for photovoltaic solar systems in regions of moderate insolation

Many people believe renewable energy sources to be capable of substituting fossil or nuclear energy. However there exist very few scientifically sound studies, which apply due diligence to substantiating this impression. In the present paper, the case of photovoltaic power sources in regions of moderate insolation is analysed critically by using the concept of Energy Return on Energy Invested (ERoEI, also called EROI). But the methodology for calculating the ERoEI differs greatly from author-to-author. The main differences between solar PV Systems are between the current ERoEI and what is called the extended ERoEI (ERoEI EXT). The current methodology recommended by the International Energy Agency is not strictly applicable for comparing photovoltaic (PV) power generation with other systems. The main reasons are due to the fact that on one hand, solar electricity is very material-intensive, labour-intensive and capital-intensive and on the other hand the solar radiation exhibits a rather low power density.

[1]  Howard T. Odum,et al.  Environmental Accounting: Emergy and Environmental Decision Making , 1995 .

[2]  Katharine Myrans,et al.  Comparative Energy and Carbon Assessment of Three Green Technologies for a Toronto Roof , 2010 .

[3]  Charles A. S. Hall,et al.  Year in review—EROI or energy return on (energy) invested , 2010, Annals of the New York Academy of Sciences.

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

[5]  Vasilis Fthenakis,et al.  The energy return on energy investment (EROI) of photovoltaics: Methodology and comparisons with fossil fuel life cycles , 2012 .

[6]  R. Weiss,et al.  Nitrogen trifluoride global emissions estimated from updated atmospheric measurements , 2013, Proceedings of the National Academy of Sciences.

[7]  Charles A. S. Hall,et al.  Spain's photovoltaic revolution : the energy returned on investment , 2013 .

[8]  Michael Dale,et al.  Energy balance of the global photovoltaic (PV) industry--is the PV industry a net electricity producer? , 2013, Environmental science & technology.

[9]  Robert U. Ayres,et al.  The Underestimated Contribution of Energy to Economic Growth , 2013 .

[10]  Charles A. S. Hall,et al.  What is the Minimum EROI that a Sustainable Society Must Have , 2009 .

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

[12]  Walter Klöpffer,et al.  Life cycle assessment , 1997, Environmental science and pollution research international.

[13]  R. Kannan,et al.  Life cycle assessment study of solar PV systems: An example of a 2.7 kWp distributed solar PV system in Singapore , 2006 .

[14]  Charles A. S. Hall,et al.  Energy return on investment, peak oil, and the end of economic growth , 2011, Annals of the New York Academy of Sciences.

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

[16]  Adam R. Brandt,et al.  Calculating systems-scale energy efficiency and net energy returns: A bottom-up matrix-based approach , 2013 .

[17]  Daniel Weißbach,et al.  Energy intensities, EROIs (energy returned on invested), and energy payback times of electricity generating power plants , 2013 .

[18]  Dirk C. Jordan,et al.  Photovoltaic Degradation Rates—an Analytical Review , 2012 .

[19]  Mario Giampietro,et al.  Are energy statistics useful for making energy scenarios , 2012 .

[20]  David I. Stern,et al.  Energy and Economic Growth: The Stylized Facts , 2014 .

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

[22]  William F. Pickard,et al.  Energy return on energy invested (eroi): a quintessential but possibly inadequate metric for sustainability in a solar-powered world? [point of view] , 2014, Proc. IEEE.

[23]  T. Trainer.  Some inconvenient theses , 2014 .