Japanese
Building-Integrated Photovoltaic (BIPV) System in AIST Tsukuba OSL Building
Research Activities
17th European Photovoltaic Solar Energy Conference and Exhibitio, Munich, Germany, 22-26 Oct. 2001: "Performance analysis and simulation on 100 Japanese residential grid-connected PV systems based on four years' experience"This work is intended to reveal the operating performance of grid-connected photovoltaic (PV) systems on the rooftop of residential houses in Japan and to develop simulation methodology for estimating electricity generation and costs in actual housing circumstances. The validity of the simulation methodology is assessed by using actually monitored data from some hundred residential PV systems. Simulation results are also used to optimise the design of PV systems and to diagnose their operating conditions. Mean value of system final yield was 1,010 hours in 1999 (65 systems) and 990 hours in 2000 (85 systems), and mean value of performance ratio was 73% in 1999 and 74% in 2000, respectively. Over 50% of the systems could supply electricity more than half of household electricity demand in 2000. Main loss factors of low performance systems were shading, MPP mismatch and defects against design, which were difficult to predict in advance. Simulation results for systems without shade and MPP mismatch were quite good. The errors of simulated monthly electricity generation were within 10% in that case. The simulation could easily find some defect systems by using the threshold of 10% error.
Remote Sensing of Available Solar Energy Resources in Eastern Asia Documents and DataSolar irradiation databases on the Web: A list of global and free irradiation databases available throughout InternetBIPV (Building Integrated PV) Photo AlbumHemispherical (Fisheye) Photography of Clouds - Live Camera and MPEG-1 MoviesMITI Urban PV System - First Six Monthly Report (From April 2000 to Sep 2000)
LinksNational Institute of Advanced Industrial Science and Technology (AIST), an Independent Administrative Organization under Ministry of Economy, Trade and Industry (METI)Ministry of Economy, Trade and Industry (METI)K.Kurokawa Lab., Tokyo University of Agriculture and Technology (TUAT)New Energy and Industrial Technology Development Organization (NEDO)Energy Technology Database, Research Information Data Base (RIO-DB)
ENERGY TECHNOLOGY DATA BASE has numerous technological data concerning energy supply, energy transportation and energy demand. Originally this data base has been constructed in order to make a long-term analysis on Japanese energy system using "MARKAL" model, which has been developed by the international cooperative project "ETSAP (Energy Technology Systems Analysis Project" established by IEA (International Energy Agency).
This data base is useful not only as input to the MARKAL model but also as general information about energy technologies. We hope this will help your interest for energy.
ProfilePersonal Information Address
| E-mail: | k.otani@aist.go.jp |
| Postal Address: |
Energy Electronics Institute National Institute of Advanced Industrial Science and Technology (AIST) 1-1-4 Umezono, Tsukuba, Ibaraki 305-8568, Japan |
| Phone: | ++81-298-61-5152 |
| FAX: | ++81-298-61-5829 |
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