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Climate change countermeasures

Solar power

Kokusai Kogyo develops and operates community-centric solar photovoltaic (PV) power stations, stemming from two main pillars of concrete expertise and experience – close to 70 years of urban development experience, and pioneering development of solar PV power stations – both in Japan and globally.

Development track record

As a partner to the local government-driven future of urban development, we develop and operate distributed energy including solar PV interlinked with local government master plans, as well as people- and nature-friendly regional and urban development – all with an aim of achieving safe, secure and sustainable green communities

List of achievements

Up to the present (March 2024)

太陽光発電国内導入実績

Contributing to the local community through solar PV power stations

Through our solar PV power stations we contribute to a better environment and to safe and secure community development, such as by supporting environmental education, energy independence utilizing local characteristics, and disaster risk reduction and preparedness measures.

Our Domestic Photovoltaic Power Stations

Fukuoka-Kamata SolarWay

福岡蒲田ソーラーウェイ

Location	Fukuoka, Fukuoka
Maximum capacity	1,198kW
Area	17,569m²
Start of construction	April 2019
Start of operations	November 2019
Equivalent household systems	450

Iwanuma SolarWay

岩沼ソーラーウェイ

Location	Iwanuma, Miyagi
Maximum capacity	2,508kW
Area	28,000m²
Start of construction	May 2019
Start of operations	November 2019
Equivalent household systems	700

Nanki-Shirahama SolarWay

南紀白浜ソーラーウェイ

Location	Shirahama, Wakayama
Maximum capacity	2,500kW
Area	34,408m²
Start of construction	April 2018
Start of operations	February 2019
Equivalent household systems	729

Kasukabe SolarWay

春日部ソーラーウェイ

Location	Kasukabe, Saitama
Maximum capacity	1,267kW
Area	15,166m²
Start of construction	July 2018
Start of operations	October 2018
Equivalent household systems	288

Kosai SolarWay

湖西ソーラーウェイ

Location	Kosai, Shizuoka
Maximum capacity	1,501kW
Area	20,502m²
Start of construction	May 2016
Start of operations	February 2017

Facility features
Kosai SolarWay photovoltaic power station has a capacity of 1,501 kW, which is roughly equivalent to the power consumed by 318 households.

Higashiura SolarWay

東浦ソーラーウェイ

Location	Higashiura, Aichi
Maximum capacity	1,865kW
Area	24,000m²
Start of construction	February 2016
Start of operations	December 2016

Facility features
Higashiura SolarWay photovoltaic power station has a capacity of 1,865 kW, which is roughly equivalent to the power consumed by 386 households.

Muroran SolarWay

室蘭ソーラーウェイ

Location	Muroran, Hokkaido
Maximum capacity	1,462kW
Area	40,000m²
Start of construction	April 2016
Start of operations	October 2016

Facility features
Muroran SolarWay photovoltaic power station has a capacity of 1,462 kW, which is roughly equivalent to the power consumed by 288 households.

Izumozaki SolarWay

出雲崎ソーラーウェイ

Location	Izumozaki, Niigata (within Eco Park Izumozaki)
Maximum capacity	2,101kW
Area	30,973m²
Start of construction	August 2015
Start of operations	June 2016

Facility features
Izumozaki SolarWay photovoltaic power station utilizes land once used as a garbage disposal site. It has a capacity of 2,101 kW, which is roughly equivalent to the power consumed by 364 households.

Takikawa SolarWay

滝川ソーラーウェイ

Location	Takikawa, Hokkaido
Maximum capacity	612kW
Area	16,000m²
Start of construction	November 2015
Start of operations	May 2016

Facility features
Takikawa SolarWay photovoltaic power station is situated on the site of a former school. It has a capacity of 612 kW, which is roughly equivalent to the power consumed by 114 standard-size households.

Kohoku SolarWay

湖北ソーラーウェイ

Location	Nagahama, Shiga
Maximum capacity	832kW
Area	9,887m²
Start of construction	November 2015
Start of operations	April 2016

Facility features
The photovoltaic power station, Kohoku SolarWay is run by the Kohoku administration center at a former waste disposal site. It has a capacity of 832 kW, which is roughly equivalent to the power consumed by 153 households.

Sapporo SolarWay

札幌ソーラーウェイ

Location	Sapporo, Hokkaido
Maximum capacity	950kW
Area	24,000m²
Start of construction	September 2015
Start of operations	March 2016

Facility features
Sapporo SolarWay photovoltaic power station utilizes land once used as a garbage disposal site. It has a capacity of 950 kW, which is roughly equivalent to the power consumed by 176 households.

Otsu SolarWay

大津ソーラーウェイ

Location	Otsu, Shiga
Maximum capacity	948kW
Area	16,241m²
Start of construction	July 2015
Start of operations	January 2016

Facility features
Otsu SolarWay photovoltaic power station is run by the Otsu Clean Center on part of a former waste disposal site. It has a capacity of roughly 948 kW, which is roughly equivalent to the power consumed by 175 households.

Onomichi SolarWay

尾道ソーラーウェイ

Location	Onomichi, Hiroshima
Maximum capacity	732kW
Area	8,163m²
Start of construction	March 2015
Start of operations	September 2015

Facility features
Onomichi SolarWay photovoltaic power station utilizes land once used as a water purification plant. It has a capacity of 732 kW, which is roughly equivalent to the power consumed by 151 households.

Taketa-Kashiwabaru SolarWay

竹田・柏原ソーラーウェイ

Location	Taketa, Oita
Maximum capacity	612kW
Area	11,471m²
Start of construction	January 2015
Start of operations	July 2015

Facility features
The photovoltaic power station, Taketa-Kashiwabaru SolarWay was constructed on Taketa City’s Kashiwabaru Ground (former site of a Kashiwabaru elementary school). The annual energy consumption is roughly equivalent to the annual consumption of 200 households and the amount of CO₂ reduction is approximately 246 tons (annual amount of CO₂ absorption is roughly equivalent to 17,400 cedar trees).

Itabashi Rooftop SolarWay

板橋ルーフトップソーラーウェイ

Location	Itabashi, Tokyo
Maximum capacity	36kW
Area	501.48m²
Start of construction	January 2015
Start of operations	March 2015

Facility features
The Itabashi Rooftop SolarWay was our first rooftop project. We implemented the project in collaboration with an environmentally advanced city representing the 23 wards of Tokyo.
The plant generates approximately the equivalent annual energy consumption of 10 households and the amount of CO₂ reduction is approximately 19 tons (annual amount of carbon dioxide absorption is roughly equivalent to 1,400 cedar trees).

Shimada Rooftop SolarWay

島田ルーフトップソーラーウェイ

Location	Shimada, Shizuoka
Maximum capacity	199kW
Area	約2,000m²
Start of construction	October 2014
Start of operations	February 2015

Facility features
This project was built on the flat roof (single story, steel-reinforced concrete) of the Shimada City water purification (treatment) plant. The plant generates approximately the equivalent annual energy consumption of 50 households and the amount of CO₂ reduction is approximately 117 tons (annual amount of CO₂ absorption is roughly equivalent to 8,200 cedar trees).

Wakayama-Hashimoto SolarWay

和歌山・橋本ソーラーウェイ01

Location	Hashimoto, Wakayama
Maximum capacity	708kW
Area	12,500m²
Start of construction	January 2014
Start of operations	April 2014

Facility features
This power station is operating on a former dioxin treatment facility. This project combines an element of “public-private industry cohesion” and is a symbol of the future development of the local community. This solar photovoltaic project contributes to Wakayama Prefecture’s policy on disaster risk reduction and prevention in various ways, including:
- ① Supporting environmental education (installation of study and tour related facilities, holding of study tours),
- ② Supplying emergency power, and
- ③ Proposing local development and disaster risk reduction and prevention initiatives.
The power station generates approximately the equivalent annual energy consumption of 200 households and the amount of CO₂ reduction is equivalent to approximately 379 tons (annual amount of CO₂ absorption is roughly equivalent to 26,000 cedar trees).