成果報告書詳細
管理番号20140000000502
タイトル*平成25年度中間年報 太陽光発電システムの据付工程簡便化に関する研究開発
公開日2014/8/21
報告書年度2013 - 2014
委託先名デュポン株式会社
プロジェクト番号P07015
部署名新エネルギー部
和文要約
英文要約Title: New Technology Development for Reducing Photovoltaic Module Installation Cost (FY2010-FY2014) FY2013 Annual Report

Cost/Wh reduction as total photovoltaic system including module, BOS, and installation is critical in order to achieve grid parity. In this project, we aim to reduce installation cost with our unique material technology. Two approaches are taken to realize this objective, and the progress of each approach is summarized below.
The first approach is the development of plastic based installation parts to reduce the number of parts and installation working hours. In 2012, we reported our success in developing plastic fixation parts enabling 62% parts reduction against conventional metal base ones. In 2013, while we have been continuously improving the plastic fixation parts design, we have started several outdoor tests to confirm installation time reduction and long term weather durability of both plastic frame and modules. As a result, it was confirmed that installation parts reduction potentially shortened the installation time by 20~40%. The second approach is the development of lightweight and frameless modules which give more design flexibility to fixation parts. Until last year, we had focused on enhancing mechanical strength of module with ionomer encapsulants. This year, we have started lab scale long term durability test such as the dump heat test (85 deg.C, 85%RH) and thermal cycle test. Double glass modules using EVA degrade after several thousand dump heat test due to acetic acid generated by hydrolysis of EVA, while ionomer module which doesn’t emit any acetic acid maintains its original power output after the dump heat test. In the next year, we will complete modules and fixation parts design and will validate its value proposition in terms of installation cost reduction. In parallel, we will continue weather durability investigation in total system and will demonstrate its long term reliability.
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