Solar power
Initiatives in Japan
Idemitsu Kosan constructs and operates solar power plants, making use of idle land at petroleum and petrochemical manufacturing bases and storage facilities. In addition to developing power plants on our own, we also develop power plants in collaboration with other companies.
Solar power plant operated independently by the company
We own and operate 13 power plants located on the site of Refinery and oil terminal. The total power generation capacity is approximately 38,000 kW, equivalent to the annual consumption of approximately 12,000 ordinary households *1.
Official name (abbreviation) | location | Completion | Power generation capacity |
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Niigata Snow Country Type Mega Solar (Niigata Daiichi) | Niigata Prefecture | August 2010 | 1,002kW |
Gamagori Solar Power Plant | Aichi prefecture | November 2013 | 641kW |
Matsuyama Solar Power Plant | Ehime Prefecture | November 2013 | 640kW |
Shimonoseki Daiichi Solar Power Plant | Yamaguchi Prefecture | December 2013 | 598kW |
Second phase in Niigata petroleum product import terminal (Niigata second mega solar) | Niigata Prefecture | February 2014 | 6,948kW |
Showa Yokkaichi Oil Kusunoki District Solar Power Plant (Kusunoki Mega Solar) | Mie Prefecture | June 2014 | 2,304kW |
Solar power plant within Hekinan LPG base | Aichi prefecture | August 2015 | 769kW |
Shimonoseki Daini Solar Power Plant | Yamaguchi Prefecture | November 2015 | 996kW |
Nagoya solar power plant | Aichi prefecture | August 2016 | 2,559kW |
Moji Daiichi Power Plant | Fukuoka Prefecture | November 2013 (start of operation) | 2,852kW |
Moji No. 2 Power Plant | Fukuoka Prefecture | November 2013 (start of operation) | 2,916kW |
Himeji Power Station | Hyogo prefecture | March 2014 (start of operation) | 14,688kW |
Onahama Power Plant | Fukushima Prefecture | November 2014 (start of operation) | 1,804kW |
Solar power plant operated jointly with other companies
CSD Solar LLC solar power plant
CSD Solar LLC is a company jointly established by our company, Cosmo Oil Co., Ltd., and Development Bank of Japan, Inc. (our investment ratio is 35%). We operate at eight locations nationwide, including Refinery and oil terminal owned by Cosmo Oil Co., Ltd. and our group.
Formal name | location | Completion | Power generation capacity |
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CSD Solar Hitachi Solar Power Plant | Ibaraki Prefecture | April 2014 | 384kW |
CSD Solar Oita Solar Power Plant | Oita Prefecture | April 2014 | 573kW |
CSD Solar Tokushima Solar Power Plant | Tokushima | May 2014 | 1,229kW |
CSD Solar Taniyama Solar Power Plant | Kagoshima prefecture | August 2014 | 1,188kW |
CSD Solar Fukui Solar Power Plant | Fukui prefecture | September 2014 | 1,966kW |
CSD Solar Kasumi Solar Power Plant | Mie Prefecture | February 2015 | 4,608kW |
CSD Solar Ohgishima Solar Power Plant | Kanagawa Prefecture | May 2015 | 7,571kW |
CSD Solar Omishima Solar Power Plant | Ehime Prefecture | June 2016 | 6,006kW |
US Power Power Plant
Operating company | US Power Co., Ltd. |
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Investment ratio | Our company 50%, Ube Industries Co., Ltd. 50% |
location | Yamaguchi Prefecture |
Power generation capacity | 21,000 kW |
start operation | July 2014 |
SOL de Omura Minoshima Solar Power Plant
Operating company | Nagasaki Solar Energy LLC |
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Investment ratio | Our company 50%, Chopro Co., Ltd. 50% |
location | Nagasaki Prefecture |
Power generation capacity | 30,000 kW |
start operation | July 2016 |
About Solar Frontier K.K
Solar Frontier is a wholly owned subsidiary of our company. We are developing businesses that contribute to the expansion of solar power generation installation locations, long-term stable use, Resources recycling of used solar cell components, and stabilization of supply and demand in grid power systems. Specifically, we are working on proposing self-consumption solar power generation systems, EPC *2 and O&M *3 businesses, developing systems that combine storage batteries, and developing recycling technology for used solar panels.
Initiatives overseas
As the demand for electricity increases worldwide, renewable energy including solar power generation is expected to play a central role in meeting power generation demand. Our company is actively participating in the solar power generation business in North America and Asia, where demand is expected to grow.
Mega solar development
North America
North America is an area with good sunlight conditions and institutional support, and a mature market for solar power generation. Through our consolidated subsidiary, Idemitsu Renewables America, Inc., we are participating in solar power plant development projects, and currently four mega solar projects have been completed and are in operation.
Mustang II
location | Kings County, California |
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Power generation scale | 210,000kWp |
Commercial operation begins | 2020 |
Central40
location | Stanislaus County, California |
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Power generation scale | 51,000kWp |
Commercial operation begins | 2021 |
Pioneer
location | Adams County, Colorado |
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Power generation scale | 104,000kWp |
Commercial operation begins | 2021 |
Luciana
location | Tulare County, California |
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Power generation scale | 73,000kWp |
Commercial operation begins | 2022 |
Vietnam
Southeast Asia, including Vietnam, is expected to see steady growth in demand for renewable energy. Our company built a mega solar power plant in southern Vietnam in 2019. This is the first large-scale solar power plant development in the Southeast Asia region. The operating entity of the power plant is Song Giang Solar Power Joint Stock Company (Song Giang Solar Power JSC), in which we have invested through our group companies.
location | Cam Ranh City, Khanh Hoa Province |
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Power generation scale | 495,000kWp |
Completion | 2019 |
On-site PPA (Power Purchase Agreement) initiatives
PPA is a system in which a business operator installs a solar power generation system on the premises, roof, or other space provided by the facility owner and supplies the generated electricity for a fee. We are developing rooftop solar power generation projects for industrial and commercial facilities mainly in Singapore, Malaysia, the Philippines, and Vietnam.
Example of rooftop solar power generation business
Head office of HSL Constructor Pte.Ltd, an international infrastructure general contractor in Singapore
Power generation scale | 600kWb |
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University of Reading, Iskandarputeri District, Johor, Malaysia
Power generation scale | 600kWb |
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