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BI PV Project Details
Name projectMSK Nagano factory
Year2004-03 (Start operation date)
PV applicationFaçade - transparent PV facade,
Flat roof - mounted & mechanical fixing
PV power total62 kWp
LocationSaku, Nagano
Latitude/Longitude36°16'8"N 138°30'11"E
© MSK corporation

Project summary
MSK corporation is the largest PV module manufacturer. The Nagano factory is the world’s largest PV module manufacturing plant with a production capacity of 100MW. PV system was installed on the roof and as a façade of the building, as a demonstration project of PV system, and the capacity is 62kW in total; 58kW – on the roof & 4kW – as façade. The PV system was installed as “Field Test Project on Photovoltaic Power Generation Systems for Industrial and Other Applications”, which is one of the demonstration project schemes. In this scheme, half of the cost is subsidized by NEDO and various kinds of operational data are monitored.

Special PV project info
PV architecture and building integrationPV modules on the roof were fixed in a low tilt angle to restrain a wind loading. Then, to reduce array interval could help to make effective use of the roof area, and to simplify the array structures could contribute to reduce the cost. Although temperature of PV modules might buildup caused by low tilt angle installation, by temperature characteristics of amorphous Si PV modules the efficiency could be better. As a façade of the building, transparent PV façades were applied instead of regular glasses. The PV façade is creating attractive design of the building and having the PR affect. By using three kinds of penetration efficiency of transparent PV façade, optical transmission into the building is adjusted.
PV ownership
Tariffs and metering
Remarks and recommended reading

Other project data
Type of projectDemonstration Project
Other relevant aspects
Start of PV project2003-08
Start operation PV system2004-03
Project leading companyMSK corporation
Project contact person
Contact email
Contact addressShinjuku, Tokyo, 160-0023, Japan, Tel: +81-3-3342-3838 FAX: +81-3-3342-6534
Part of Urban Scale project

Building data
Use and function of the buildingEnterprises - industrial buildings and workshops
Building typeNon-residential buildings - 2 floors
New/Retrofit/AddedNew building integration
PV building address

PV system
PV applicationFaçade - transparent PV facade,
Flat roof - mounted & mechanical fixing
PV power total project62 kWp
Number of dwellings/units0
PV power per dwellings/units0 kWp
PV system typeGrid-connected - demand side
PV module typePV building elements - other,
Framed - regular module
PV cell typeAmorphous silicon
PV module brand and typeMSK corporation
PV inverter brand and typeSanyo Denki Co. Ltd.
Includes PV database product(s) 

PV cost and energy production
PV system investment
PV modules only costs
PV energy yield
PV energy user ownerMSK corporation

Names and Addresses
Building OwnerPV ownerArchitectMain PV manufacturer
NameMSK corporationMSK corporation & NEDOIchikawa Sokuryo Sekkei (architectural design office)MSK corporation
AddressShinjuku, Tokyo, 160-0023, Japan, Tel: +81-3-3342-3838 FAX: +81-3-3342-6534

Projects websitehttp://www.msk.ne.jp/en/index.html
Other websites
Webpage Educational Tool


(bipv) building integrated pv, (PV) façades, (PV) transparent modules