Kaga Toshiba and Himeji Semiconductor Introduce Off-site PPA Model
June 17, 2025
Toshiba Electronic Devices & Storage Corporation
Kaga Toshiba Electronics Corporation
Kawasaki, Japan－Toshiba Electronic Devices & Storage Corporation (“Toshiba Devices & Storage”) has entered into off-site power purchase agreements[1] for long-term procurement of renewable energy ("off-site PPA model") for the Group’s two semiconductor manufacturing facilities, Kaga Toshiba Electronics Corporation, in Ishikawa Prefecture, central Japan ("Kaga Toshiba"), and Himeji Operations – Semiconductor, in Hyogo Prefecture, western Japan ("Himeji Semiconductor"). All energy supplied to both facilities will be renewable energy with additionality[2] from newly constructed solar power plants.
Toshiba Group’s "Environmental Future Vision 2050" recognizes countering climate change as an important corporate responsibility, and Toshiba Devices & Storage Group is promoting measures to advance the achievement of carbon neutrality. It aims to achieve net-zero greenhouse gas emissions from all its manufacturing sites by fiscal year 2030[3], and to promote this has already introduced the on-site PPA model and is promoting use of renewables.
Kaga Toshiba has contracted with Hokuriku Electric Power Company for the off-site PPA model, and started to use renewable energy with additionality derived power in June 2025. It will procure solar power dedicated to its support, and anticipates annual procurement of approximately 27 GWh by fiscal year 2027. The expected reduction in greenhouse gas emissions from this initiative is approximately 13,000 tons a year (equivalent to about 5,000 households)[4].
Himeji Semiconductor’s off-site PPA model contract is with Kansai Electric Power Company, and it started using renewable energy with additionality in April 2025. The plant currently procures approximately 6.2 GWh annually from dedicated solar power plants, which is expected to reduce greenhouse gas emissions by approximately 2,500 tons a year (equivalent to about 1,500 households)[5].
In April 2022, Himeji Semiconductor achieved 100% consumption of renewable energy in its operations[6]. Kaga Toshiba’s new 300-millimeter wafer fabrication facility for power semiconductors, which began mass production in February 2025, has also achieved 100% consumption of renewable energy. Along with newly introduced off-site PPA models, Kaga Toshiba and Himeji Semiconductor will continue to strive for the best mix of renewable energy.
Power semiconductors, play a key role in electricity supply and control, and contribute to the realization of carbon neutrality by suppressing power consumption. Toshiba Devices & Storage Group will continue to develop businesses that contribute to global environmental conservation by reducing environmental impacts in manufacturing and building a sustainable society.
For more information on Toshiba Devices & Storage's environmental efforts
For more information on Kaga Toshiba's sustainability efforts (Japanese only)
Production Sites Covered
Kaga Toshiba Electronics Corporation
Location: 1-1, Iwauchi-machi, Nomi-shi, Ishikawa Prefecture, Japan
Established: December, 1984
President and Representative Director: Satoshi Aida
Employees: Approx. 1,150 (as of March 31, 2025)
Main Products: Discrete semiconductors (power semiconductors, small-signal devices and optoelectronic devices)
Web: Kaga Toshiba Electronics Corporation (Japanese only)
Himeji Operations – Semiconductor
Location: 300, Ikaruga, Taishi-cho, Ibo-gun, Hyogo Prefecture, Japan
Established: April, 1982
General Manager: Kyozo Takeo
Employees: Approx. 1,450 (as of March 31, 2025)
Main Products: Discrete semiconductors (power semiconductors and small-signal devices)
[1] Power Purchase Agreement refers (PPA): A contract where the consumer directly purchases energy from a power company. The on-site PPA model requires installing power generation facilities on the consumer's premises or roof, while the off-site PPA model involves installing power generation facilities at a location owned by the power company, not on the premises of the consumer.
[2] Additionality: The concept that the procurement of renewable energy promotes investment in new renewable energy facilities beyond the specific procurement and contributes to the wider adoption of renewable energy.
[3] Including the purchase of carbon credits.
[4] Calculated based on Hokuriku Electric Power Company's 2023 emission factor of 0.481 kg-CO2/kWh.
[5] Calculated based on Kansai Electric Power Company's 2023 emission factor of 0.401 kg-CO2/kWh.
[6] 100% renewable energy consumption achieved by using environmental value certificates for power derived from renewable energy sources.
* Other company names, product names, and service names may be trademarks of their respective companies.
Information in this press release, including product pricing and specifications, content of services and contact information, is current and believed to be accurate on the date of the announcement, but is subject to change without prior notice. Technical and application information contained here is subject to the most recent applicable Toshiba product specifications.