| 1973 |
Introducing the history of the TESS Group, founded in 1973 |
| 1973-11 |
Our TESS Group started in November 1973 against the background of the oil shock era. |
| 1973-11 |
Started as a sole proprietorship under the name Hanshin Thermal Water Industry |
| 1979-05 |
Established Hanshin Thermal Water Industry Co., Ltd. |
| 1992-01 |
Changed the company name to TESS Engineering Co., Ltd. |
| 1999-11 |
Launched a 24-hour monitoring center (currently ICT Solution Center) |
| 2003-06 |
Achieved a total of 1,000 co-generation systems delivered |
| 2009-05 |
Registered as a green power certificate issuer |
| 2009-07-09 |
Establishment date: July 9, 2009 |
| 2010-02 |
Started retail electricity supply |
| 2011-03-11 |
Due to the Great East Japan Earthquake on March 11, 2011, rolling blackouts and electricity usage restrictions were imposed across the entire eastern Japan area, making it difficult for industrial users to operate factories and offices stably. Many customers consulted about installing private power generation facilities, and the TESS Group installed about 70 units (approximately 43MW) of private power generation equipment as part of the power recovery project, mainly for industrial users in eastern Japan. |
| 2012-07 |
Started EPC for renewable energy power plants with the commencement of the FIT system |
| 2013-06 |
Commissioned the first solar power plant of the company |
| 2018-04-01 |
On April 1, 2018, changed the trade name from 'Tes Techno Service Co., Ltd.' due to becoming a holding company |
| 2018-04 |
Transitioned to a holding company structure with Tes Holdings as the parent company |
| 2018-10 |
Started research and development of biomass fuel derived from palm nuts in Indonesia |
| 2020-04 |
Started biomass fuel sales business targeting biomass power operators in Japan |
| 2021-04 |
Listed on the First Section of the Tokyo Stock Exchange |
| 2022-04 |
Transitioned to the Tokyo Stock Exchange Prime Market |
| 2024-08 |
Formulated and announced the TESS Group medium-term management plan 'TX2030' |
| 2025-03 |
Achieved the first large-scale order in the energy storage system-related business |
| 2025-09 |
Total power generation capacity of our renewable energy power plants exceeds 400 MW |
