The value of a PV system is largely determined by its performance. This talk will discuss 1) the parameters which affect performance, such as system design, component energy performance, environmental conditions, and system availability, quality, and reliability, and 2) the importance of, and approaches for, accurate prediction of performance.
About Doug Rose
Doug Rose joined SunPower in 2002 and currently holds the position of vice president, technology strategy. Previous roles at SunPower include product engineering manager of the company’s cell pilot line, director of module research and development, and technology development director. His career spans more than 20 years of manufacturing technology development, thin-film PV research, silicon cell and module development, and technology assessment at GTE, the National Renewable Energy Laboratory, First Solar, and SunPower Corporation. Dr. Rose has degrees in mechanical engineering from Iowa State and Stanford University, and a Ph.D. in electrical engineering from the University of Colorado. He has 60 publications and patents in the field of solar energy.
The session would take a look at the US PV market’s policies, workforce development, green-collar training, building standards, incentives, standard measures compared to other countries’.
About John Garofalo
John has over 25 years of combined business development, sales, marketing, and strategy experience in the energy, utility, construction and commercial property management industries. Most recently, John was the V.P. of Strategy and Business Development at CED International (Consolidated Energy Design), where he assisted the energy-consulting firm through several transitions and acquisitions, including training and mentoring the sales and business development teams. Prior to CED, John was V.P. of Business Development for National Grid Energy Services, where he led the sales, marketing, and business development efforts for all non regulated activity in residential, commercial and industrial markets helping bridge many of regulated programs for the Renewable, Smart Grid and Energy Efficiency teams across National Grid’s U.S. footprint and beyond. Prior to that, he was the National Director, Business Development for Pinnacle One, a boutique consulting firm specializing in Construction, Program, Project and Energy Management where he developed internal processes while coaching the field teams to greater collaborative success within both the Public and Private Sector and was instrumental in positioning the company for acquisition. John attended Montclair State College and also holds a PLD certificate from Harvard Business School.
Crystalline photovoltaic solar cells have made considerable progress over the last few years, increasing in efficiency and decreasing in cost. The cells usually contain a planar junction, and possibly a roughened surface. A basic trade-off with this two-dimensional structure is the inherent coupling of the light absorbing thickness and the carrier collection distance, which limits the use of lower-cost, lower-quality semiconductors. If a material with a shorter diffusion length is used, the absorbing thickness must be decreased or many of the generated electron-hole pairs recombine, rather than being collected.
“Nanowire” structures allow the absorbing distance and the carrier collection distance to be decoupled. A long absorbing distance can be used to absorb the maximum amount of light, while the distance that the minority carriers must travel to be collected can be short. In addition, a nanowire array inherently scatters incoming light many times, decreasing the amount of light reflected from the structure without additional complex processing. The nanowire array also allows flexibility in the final device structure, as well as the possibility of forming nanowires containing regions of different semiconductors within a single nanowire to collect different portions of the solar spectrum. Arrays of nanowires with the composition of nearby nanowires varying can be formed to obtain a horizontal array of nanowires sensitive to different wavelengths.
This presentation will describe the basic idea of the nanowire solar cell, the benefits and limitations, and a few of the solar cell structures possible.
About Ted Kamins
Ted Kamins is a Consulting Professor in the Electrical Engineering Department at Stanford University, where he is guiding research on epitaxial Si and Ge deposition for optical interconnects, on photodiode arrays for retinal prosthesis, and on other advanced semiconductor processing.
Ted received his degrees from the University of California, Berkeley. He then joined the Research and Development Laboratory of Fairchild Semiconductor, where he worked with epitaxial and polycrystalline silicon before moving to Hewlett-Packard Laboratories, where he worked on numerous semiconductor material and device topics. Most recently at Hewlett-Packard, he was a Principal Scientist in the Information and Quantum Systems Laboratory, where he conducted research on advanced nanostructured electronic and sensing materials and devices.
Ted is co-author with R. S. Muller of the textbook "Device Electronics for Integrated Circuits" and is author of the book "Polycrystalline Silicon for Integrated Circuits and Displays." He is a Fellow of the IEEE and a Fellow of the Electrochemical Society. He has taught at the University of California, Berkeley, and at Stanford University and has been an Associate Editor of the IEEE Transactions on Electron Devices.
Solar cells, both thing film based and crystalline silicon based have made impressive progress in improving the efficiency and lowering the cost. But still there is a huge gap between what is theoretically possible and what we can reliably create industrially. In this paper we will discuss a couple of options for methods of improving the efficiency of solar cells, mainly concentrating on schemes which would possible improve on capturing the light, like plasmonics, structured surfaces and 3 D structures.
About Robert Visser
Robert J Visser was Born in Amsterdam, The Netherlands. He Studied physical and theoretical chemistry at the University of Leyden, got his PhD in Physical Chemistry from the same University in 1984. He joined after a short stay at the InterUniversity In 1990, he joined the researcher at Department Head Polymer and Organic Chemistry Group in Philips Research. He was promoted to Lead Polymer OLED ‘start-up/project’ within Philips in 1994-1998. In 1998, he moved to Interim CEO of ‘PolyLED’ a new business within Philips Components. From 1999 to 2002 he served as an Innovation manager Philips PolyLED. In 2002 to 2009 he moved to CTO Vitex Systems, a Bay Area Start-up in thin film encapsulation and barrier technology. Since March 2009, he has been focused mainly on new generations of solar cells: more efficient and lower cost at Advanced Technology Group in Applied Materials.
Costs are declining, efficiencies are increasing, and concentrating photovoltaic technology manufacturers stand ready to supply the utility-scale solar market. In his presentation, Solaria CEO Daniel Shugar will discuss the prospects for low cost concentrator solar PV to meet the needs of the industrial and utility-scale market.
About Daniel Shugar
Daniel Shugar has spent over twenty years advancing the renewable energy industry, most recently as president of SunPower Corporation, Systems. Prior, during his tenure as president of PowerLight, Mr. Shugar oversaw revenue growth from less than $1 million to over $800 million and was responsible for the completion of approximately 500 projects serving commercial, industrial, and utility clients worldwide. Mr. Shugar has invented various PV system applications, holds multiple U.S. patents and has published over 50 technical papers. Mr. Shugar holds a BS in electrical engineering from Rensselaer Polytechnic Institute and MBA from Golden Gate University.
About Joel Ayala
Joel A. Ayala was recently appointed by Governor Arnold Schwarzenegger as Director of the Governor’s Office of Economic Development (GoED) to make it easier to start, expand, or keep a business in California. Mr. Ayala is working to facilitate and stimulate economic growth through the development and implementation of strategic policies and partnerships with the private sector, community, local, and national organizations that enhance human and capital infrastructure development as well as increase California’s competitive advantage in the global marketplace. Prior to joining the state, he served as the President and CEO of the California Hispanic Chambers of Commerce where he represented the interests of over 720,000 Hispanic-owned businesses in California.
In 2001, Mr. Ayala became President and CEO of the Orange County Hispanic Chamber of Commerce where he served as the primary contact for federal, state and local legislators concerning the interests of the Hispanic business community in Orange County, CA. Through local Empowerment Zones, Workforce Investment Boards, and Enterprise Zones, Mr. Ayala worked to improve Workforce and Economic Development for small to midsize companies in Orange and Los Angeles counties.
Mr. Ayala brings over 20 years of experience in the areas of personal development and leadership and has served as a board member to the Orange County Presidents Council, the Santa Ana Empowerment Zone, the Workforce Investment Boards of Santa Ana and Anaheim, the Small Business Development Center, and the Business Community Advisory Boards for Rancho Santiago and North Orange County Community College Districts. Mr. Ayala sat on the California Task force for Small Business spearheaded by the Department of General Services, and was selected to join the Lieutenant Governor’s Economic Development Committee. Mr. Ayala has been awarded the CHCC “Executive of the Year” award, Citi Bank Executive of the Year, as well as the SBA award for “Minority Small Business Champion.”
Skyline Solar has developed a novel High Gain Solar Array which operates at medium concentration levels using high performance Silicon cells and incorporates a single axis tracking system. The design offers the unique capability of being field upgradable and delivers a holistic approach to system optimization from the manufacturability, performance, reliability and cost point of view.
About Tim Keating
Tim joined Skyline in January 2008 during fund raising. He founded the Marketing and Field Operations at Skyline Solar and led Field Operations through the construction of Skyline’s first commercial solar plants. Previously, Tim was a venture consultant serving several companies as an advisor and operations executive during funding and company ramp phase. Tim is a 22-year veteran of Intel where he was the managing director of Intel Capital Europe based in Munich and London. He led the European team which made 70 equity investments between 1998 and 2002. Before this Tim held general management, sales, marketing and engineering roles at Intel in Europe and U.S. sites including worldwide Director of Marketing for the Pentium™ Processor through the launch of the original Intel Pentium™ brand and chip. Tim started his career at Pacific Gas and Electric in engineering. Tim holds a BS electrical and computer engineering from University of California, and is an alumnus of the Harvard University Graduate School of Business General Management Program (PMD).
This presentation introduces the SolFocus Concentrator Photovoltaic (CPV) product – what it is and how it works. It presents the value proposition for SolFocus CPV and the design and manufacturing advantages of this product vs. other solar options, supplemented by a discussion of where to use SolFocus CPV and examples and data from existing installations.
About Phil Metz
Phil Metz leads Business Development with energy developers in North America for SolFocus, a leader in the Concentrator Photovoltaic (CPV) industry. In this role Dr. Metz builds strategic partnerships and drives sales with selected developers in key vertical markets and geographies.
Prior to joining SolFocus he was Vice President, Market Planning and Sales Support, and subsequently Vice President Self-Service Automation, at Solectron, a $12B+ electrons manufacturing services leader. Dr. Metz’ background includes 12 years of management consulting in energy, strategy, marketing and technology management, 10 years of renewable energy R&D, and a PhD in physics.
Increased scrutiny of energy production in PV installations has created a demand for new tools for characterizing the performance of the DC side of the system. Comparison of the measured and predicted current-voltage (I-V) curves of PV strings provides great insight into the health of the array, revealing series and shunt losses, mismatch effects and overall degradation. I-V curves measured during the commissioning of a PV system provide a solid baseline for comparison across the life of the system. This talk provides an overview of I-V measurement principles and applications, with an emphasis on PV system commissioning, troubleshooting and ongoing maintenance
About Paul Hernday
Paul Hernday is an Applications Engineer with Solmetric. His focus is on the characterization of PV array performance. Paul’s background is in the development and application of electrical test instruments at Hewlett Packard and Agilent Technologies, and in the design, installation, and field testing of PV systems. He received a BS in Electrical Engineering from the University of Wisconsin and an MA in Organization Development from Sonoma State University.