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Are you tracking or stowing? – A financial analysis of stow strategies

Current large format PV modules trackers already move into stow at lower wind speed thresholds, which means they can be in stow very often, defeating the purpose a tracker is designed for. Arctech’s solution to the problem: raising the wind speed threshold that triggers stow position. In this pv magazine Webinar, we will analyze the economic effects of this as well as review the methodology that Arctech has used to derive the energy yield for the different scenarios considered. DNV will provide feedback on how Arctech can refine its methodology in the future.

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Are you tracking or stowing? – A financial analysis of stow strategies

Developers shopping for single-axis trackers are likely to look for a model that can withstand very high wind loads. But these reasonable safety concerns should be considered with the project’s economics in mind, as our initiative partner Arctech showed in a pv magazine Webinar in December 2021. One of trackers’ most important wind mitigation strategies is its safe stow position. In this position, the modules are tilted into a favorable position to maintain the structure’s safety. But while the system is tilted to protect the structure from wind damage, there is no tracking, which reduces yield and thus revenues.

Current large format PV modules trackers already move into stow at lower wind speed thresholds, which means they can be in stow very often, defeating the purpose a tracker is designed for. Arctech’s solution to the problem: raising the wind speed threshold that triggers stow position. The economic effects of this are profound; we heard from the manufacturer’s, global director of engineering and R&D, Pedro Magalhães in December.

In this pv magazine Webinar, we will also welcome César Hidalgo López a principal engineer and tracker expert from DNV to the stage. DNV has reviewed the methodology that Arctech has used to derive the energy yield for the different scenarios considered and has provided feedback on how Arctech can refine its methodology in the future.

pv magazine Webinar content: 

  • Stow strategy / Wind mitigation strategy of Arctech
  • Economic analysis
  • DNV acting as an independent engineering firm
  • Analysis of the economic model
  • Design improvements
  • Q&A

Questions can be submitted beforehand or during the webinar through a chat window. Marian Willuhn from pv magazine will be the moderator of this webinar.

Registration for this pv magazine Webinar is free of charge.

Speakers

Pedro Magalhães | Director global engineering and R&D, Archtech

Pedro HSV Magalhes started his PV career in Madrid, Spain, back in 2003, designing and engineering trackers for Concentration PV. His career spans over several facets of the industry, from product development of PV components, plant engineering to business development of EPC services. Currently, Pedro is the Director of Global Engineering and R&D at Arctech, where he heads tracker product development and works with owners, developers and EPCs deploying PV in 4 continents, having had direct participation in 10GW+ of utility-scale projects installed.

César Hidalgo López | Principal engineer for solar, DNV

César Hidalgo is a Principal Engineer in DNV Solar with focus on PV technology issues. He is involved currently in several projects regarding PV trackers optimization, root cause analysis and bankability of new products. He is collaborating with the European Technology and Innovation Platform (ETIP).

Moderators

Tim Sylvia | Editor, pv magazine USA

Tim Sylvia is an associate editor at pv magazine USA. A graduate of Hood College, Tim has been with pv magazine since May 2018. Tim covers project development, legal issues and renewable energy legislation, as well as contributing to the daily Morning Brief.

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