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- DescriptionThe Energy Return on Energy Invested (EROI or EROEI) is the amount of energy acquired from a particular energy source divided by the energy expended, or invested, in obtaining that energy. EROI is an essential and seemingly simple measure of the usable energy or energy profit from the exploitation of an energy source, but it is t so easy to determine all of the energy expenditures that should be included in the calculation. Because EROI values are generally low for renewable energy sources, differences in these estimates can lead to sharply divergent conclusions about the viability of these energy techlogies. This book presents the first complete energy analysis of a large-scale, real-world deployment of photovoltaic (PV) collection systems representing 3.5 GW of installed, grid-connected solar plants in Spain. The analysis includes all of the factors that limit and adjust the real electricity output through one full-year cycle, and all of the fossil fuel inputs required to achieve these results. The authors' comprehensive analysis of energy inputs, which assigns energy cost estimates to all financial expenditures, yields EROI values that are less than half of those claimed by other investigators and by the solar industry. Sensitivity analysis is used to test various assumptions in deriving these EROI estimates. The results imply that the EROI of current, large-scale PV systems may be too low to seamlessly support an energy and ecomic transition away from fossil fuels. Given the pervasiveness of fossil fuel subsidies in the modern ecomy, a key conclusion is that all components of the system that brings solar power to the consumer, from manufacturing to product maintenance and life cycle, must be improved in terms of energy efficiency. The materials science of solar conversion efficiency is only one such component. Sunny Spain represented an ideal case study as the country had the highest penetration of solar PV energy at 2.3 percent of total national demand as well as state-of-the-art expertise in solar power including grid management of intermittent, modern renewable systems. This book, written by a uniquely qualified author team consisting of the chief engineer for several major photovoltaic projects in Spain and the world's leading expert on the concept and application of EROI, provides a comprehensive understanding of the net energy available to society from energy sources in general and from functioning PV installations under real-world conditions in particular. The authors provide critical insight into the capacity of renewable energy sources to fill the foreseeable gap between world energy demand and depletion rates for fossil fuels. * Presents the first comprehensive study of the EROI of large-scale solar PV systems in a developed country * Uses real-world operational data rather than laboratory approximations and extrapolations * Describes the dependence of one alternative energy source on the goods and services of a fossil-fueled ecomy * Has global implications for the potential of renewable energy sources to replace dwindling reserves of fossil fuels * Written with the first-hand kwledge of the chief, on-site engineer for many solar installations in Spain together with the leader in the development and application of the concept of EROI
- Author BiographyPedro A. Prieto is a Telecom Technical Engineer. He has worked in the telecom sector for 30 years as development engineer and professor in the ITT R&D Labs, commercial director, export director and vicepresident of the Radiocommunication division in Alcatel. Pedro is vice president of a non-for-profit organization, the Asociacionpara el Estudio de los RecursosEnergeticos (AEREN), whose media is the web page Crisis Energetica (www.crisisenergetica.org), is working as an open space for debate and communications on energy issues and their role in demography, development, economy and ecology and is a reference in the Spanish speaking world for ASPO (The Association for the Study of Peak Oil and Gas, an Association of scientists of all over the world, devoted to the analysis and study of the global peak oil and gas and its consequences for Mankind). AEREN represents ASPO in Spain. He attends many conferences on peak oil and renewable energies. Pedro is a board member at ASPO International (www.peakoil.net), and is also member of the non-for-profit organization Cientificospor el MedioAmbiente (CiMA) (www.cima.es.org). Since 2004, Pedro Prieto has led several solar photovoltaic projects in Spain, a leading world country in solar PV penetration, covering today about 2.2 percent of the total national electric demand, with about 3,750 MW installed base, of which he partially owns and completely manages a 1 MW modern feed-in plant in operation. He has assessed public and private entities in several projects for more than 30 MW, and has supervised, offered and dimensioned many other similar solar photovoltaic projects. In 2009 he was engaged as Director of Development for Alternative Energies at a listed Spanish Corporation devoted to the fields of telecommunications, technology, infrastructures and renewable energies. At present, Pedro works as a truly independent consultant in solar PV projects. Charles A.S. Hall is Professor of Environmental Science at the State University of New York, College of Environmental Science and Forestry, in Syracuse. He received his PhD. from the University of North Carolina at Chapel Hill under Dr. H.T. Odum. His fields of interest are Systems Ecology, Energy and Biophysical Economics. Dr. Hall is author, coauthor or editor of eight 8 books and 260 scholarly articles that have appeared in Science, Nature, BioScience, American Scientist and other scientific journals. He is best known for his development of the concept of EROI, or energy return on investment, which is an examination of how organisms, including humans, invest energy into obtaining additional energy to improve biotic or social fitness. He has applied these approaches to carbon balance, fish migrations, tropical land use change and the extraction of petroleum and other fuels in both natural and human-dominated ecosystems. Presently, he is developing a new field, biophysical economics, as a supplement or alternative to conventional neoclassical economics, while applying systems and EROI thinking to a broad series of resource and economic issues.
- Author(s)Charles A. S. Hall,Pedro A. Prieto,Pedro A. Prieto Perez
- PublisherSpringer-Verlag New York Inc.
- Date of Publication03/01/2013
- SubjectIndustrial Studies: General
- Series TitleSpringerbriefs in Energy/Springerbriefs in Energy Analysis
- Place of PublicationNew York, NY
- Country of PublicationUnited States
- ImprintSpringer-Verlag New York Inc.
- Content Note18 colour illustrations, 21 black & white tables, 1 colour tables
- Weight237 g
- Width155 mm
- Height235 mm
- Spine9 mm
- Edition Statement2012
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