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Our Business

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 (February 2020)

実績一覧

国内の開発実績MAP


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


Sarabetsu SolarWay

更別ソーラーウェイ

Location Sarabetsu, Hokkaido
Maximum capacity 1,344kW
Area 51,513m2
Start of construction April 2019
Start of operations December 2019
Equivalent household systems 374

Nemuro SolarWay

根室ソーラーウェイ

Location Nemuro, Hokkaido
Maximum capacity 3,009.6kW
Area 72,160m2
Start of construction July 2019
Start of operations December 2019
Equivalent household systems 827

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

Toyokoro SolarWay

豊頃ソーラーウェイ

Location Toyokoro, Hokkaido
Maximum capacity 1,584kW
Area 33,199m2
Start of construction November 2017
Start of operations September 2019
Equivalent household systems 443

Ishikari SolarWay

石狩ソーラーウェイ

Location Ishikari, Hokkaido
Maximum capacity 2,480kW
Area 50,847m2
Start of construction May 2017
Start of operations August 2019
Equivalent household systems 583

Yamaguchi SolarWay

山口ソーラーウェイ

Location Yamaguchi, Yamaguchi
Maximum capacity 2,640kW
Area 30,408m2
Start of construction November 2018
Start of operations June 2019
Equivalent household systems 656

Marumori SolarWay

丸森ソーラーウェイ

Location Marumori, Miyagi
Maximum capacity 2,983.5kW
Area 57,671m2
Start of construction September 2018
Start of operations May 2019
Equivalent household systems 827

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

Kitakami SolarWay

北上ソーラーウェイ

Location Kitakami, Iwate
Maximum capacity 1,117kW
Area 22,813m2
Start of construction December 2017
Start of operations May 2018
Equivalent household systems 207

Tsukidate SolarWay

築館ソーラーウェイ

Location Kurihara, Miyagi
Maximum capacity 1,360kW
Area 20,821m2
Start of construction December 2017
Start of operations April 2018
Equivalent household systems 259

Osaki SolarWay

大崎ソーラーウェイ

Location Osaki, Miyagi
Maximum capacity 1,383kW
Area 16,731m2
Start of construction December 2017
Start of operations April 2018
Equivalent household systems 279

Kobe SolarWay

神戸ソーラーウェイ

Location Kobe, Hyogo
Maximum capacity 2,090kW
Area 22,387m2
Start of construction April 2017
Start of operations December 2017
Equivalent household systems 417

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).

Itoman SolarWay

糸満ソーラーウェイ

Location Itoman, Okinawa
Maximum capacity 1,039kW
Area 11,977m2
Start of construction November 2014
Start of operations April 2015
  • Facility features
  • Itoman SolarWay photovoltaic power station was built by our affiliate company, Ryukyu Kokusai Kogyo, on roughly 12,000m2 of idle land. The plant generates approximately the equivalent annual energy consumption of 350 households and the amount of CO2 reduction is approximately 1,000 tons (annual amount of carbon dioxide absorption is roughly equivalent to 70,700 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).

Saga-Kyuragi SolarWay

佐賀・厳木ソーラーウェイ

Location Karatsu, Saga
Maximum capacity 1,053kW
Area 16,448m2
Start of construction December 2014
Start of operations February 2015
  • Facility features
  • This power station was constructed in Kyuragi Town, Karatsu City, Saga Prefecture. The project took into account the local revitalization plans (aiming to have a ripple effect on industrial recovery), with construction starting in July of 2014 and operation beginning in February of 2015. The plant was expanded in 2016, generates approximately the equivalent annual energy consumption of 210 households.

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).