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Webinar on the PV_LIB Toolbox – August 13, 2013

Interested in a PV modeling tool that is customizable, flexible, and powerful? Sandia National Laboratories has developed the PV_LIB Toolbox of PV modeling functions (currently in Mathworks’ MATLAB®), and is providing the library at no cost to PV Performance Modeling Collaborative members. PV_LIB functions are open to viewing and provide a great way to deeply…

August 5, 2013

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Shading Losses in PVsyst have been corrected in Version 6.10

By Josh Stein Uncategorized

PVsyst has just released a fix (new in version 6.10) for the issue raised in previous posts about shading losses and tracking. The developer has posted a nice description of the history of the problem and the new approach being used. If you use PVsyst to model tracking systems, it would be worth your while to check…

July 26, 2013

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Update on Backtracking Issues in PVsyst

By Josh Stein Uncategorized

The developer of PVsyst, André Mermoud wrote to me in response to my recent post: Backtracking Issues in PVsyst. He pointed out that my description of the problem we not entirely correct. I encouraged him to document the issue on his website so that users have accurate information when using PVsyst to simulate tracking PV systems. …

July 3, 2013

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Backtracking Issues in PVsyst

By Josh Stein News

Lauren Ngan et al. from First Solar presented a great poster at the 39th IEEE PV Specialists Conference in Tampa, FL on how “true” single axis tracking (without backtracking) produced more energy for First Solar arrays than the use of backtracking, which avoids row-to-row shading. As part of her study, she and her coauthors discovered…

June 26, 2013

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SAM Virtual Conference and Webinar

By Josh Stein Events

The NREL Sysytem Advisor Model is holding the SAM Virtual Conference on the July 23rd. The deadline for submitting an abstract to present is next Tuesday, June 11. If you would like to make a presentation, please visit the conference website for abstract submission instructions. (You do not need to submit an abstract or pre-register to be a…

June 4, 2013

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New York Times Article on PV Module Reliability and Degredation

By Josh Stein News

The New York Times published an interesting article about module reliability and degredation problems, quoting several PVPMC members. The article can be seen here: http://nyti.ms/16nXR7p. One interesting and relevant fact cited is a study by Meteocontrol of 30,000 PV systems in Europe, which found that 80% of these systems are underperforming expectations. This finding indicates to…

May 29, 2013

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Presentations from the 2013 PVPMC Workshop now available for download!

By Josh Stein Events News

The presentations from the 2013 PV Performance Modeling Workshop are now available for download. A link to the workshop is available at https://pvpmc.sandia.gov/events/ You can also directly access the workshop page here. Please note that you will need to login to the pvpmc.sandia.gov site in order to download documents. If you are not logged in,…

May 13, 2013

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2nd PV Performance Modeling Workshop Completed!

By Josh Stein News

The 2nd PV Performance Modeling Workshop was held on May 1-2 in Santa Clara, CA. The event was well attended with about 150 attendees from North America and Europe and the feedback we received has been very positive. Workshop attendees learned about advances in in PV performance models and modeling practice from industry experts (late…

May 7, 2013

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IEA Task 13 Workshop on “Lessons Learned from the Analytical Monitoring and Modeling of PV Systems” June 16, Tampa, FL

By Josh Stein Events

The International Energy Agency’s Task 13 (Photovoltaic Power Systems) will present a workshop in conjunction with the 39th IEEE PV Specialists Conference in Tampa, FL on Sunday June 16 from 1 – 5 PM at the Tampa Convention Center. The workshop is called “Lessons Learned from the Analytical Monitoring and Modeling of PV Systems” Summary: …

April 19, 2013

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2013 PV Performance Modeling Workshop is expanding registration limits!

By Josh Stein Uncategorized

There has been lots of interest in this workshop and we have just expanded the number of registration slots for this workshop to beyond 110! If you have not registered yet, please do so ASAP at this site (http://pvworkshops.sandia.gov).

April 15, 2013