Activities New Energy Award 2000 Chairman of New Energy Foundation Prize

New Energy Award 2000

Application Category

300 kW PV Power Generation System Installed at Nippon Institute of Technology
Winner
Nippon Institute of Technology
Space Concept Kabushiki Kaisya
Sharp Amenity System Corporation

This is a large-scale photovoltaic power generation system with solar cell modules of 300 kW and a translucent type (for lighting) module of 13.1 kW installed on the roof.
The large display in the main building shows various data including present power generating status and information about photovoltaic power generation.

Features of Equipment, Systems and Facilities

"300 kW water proofing PV system" designed to blend in with the landscape

Japan's first and largest photovoltaic power generation system was constructed at the university under an environmental program to educate students who will be undertaking responsibilities for the future preservation of the environment and to motivate visitors and local residents about the importance of preserving the environment for future generations.
The reconstruction of the main building foundation was carried out with consideration for earthquake resistance and the power generation system was installed.

Integrated roof system eliminated water proofing work

Integrated roof system eliminated water proofing work

The assembly of equipment covered most of the roof and the integration of solar cell frames and metal roof material was constructed to protect the equipment from the elements instead of water proofing the old and obsolete roof.
Cost reduction and lightweight of materials realized economic efficiency and attractive shape designed to blend in with the landscape. In addition, curtailed power consumption at a peak demand in the summer and heat insulation effects of rooftop are gained as spillover effects.

Another 13.1 kW PV system "Solar Tube" - marriage of lighting and power generation
This is the first installation of lighting type PV modules on the roof and windows of the Japanese university. "Solar tube" is constructed as a symbol of environmental projects. Visitors can enter the inside of the solar tube and will see and experience a photovoltaic power generation system.

Large scale display

Inside the solar tube

Solar tube outer view
Large information display for visitors and students
The display shows the operation status of the PV system in figures and graphs in real time. An LCD touch monitor with a search function enhances interest of visitors and students.

Specifications

Equipment	Quantity	Specification
Single crystal module	2,300	131 W/sheet	Total 301.3 kW
(Integrated roof type)		Inclination angle	3 degrees
Lighting type module	160	82 W/sheet	Total 13.1 kW
(Solar tube)		Laminated tempered glass
Inverter	4	50 kW	NEDO standard type
	2	50 kW	With self operation function
	1	10 kW	NEDO standard type
Self operation selection panel	1	For DC input selection

New Energy Award 2000

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