| 1908 | Zenma Works Ltd. was established by investment from British B & W (capital: ¥73,000). |
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| 1915 | Zenma Works was renamed to Zenma Iron Works. |
| 1920 | Capital of Zenma Iron Works was increased to ¥400,000. |
| 1928 | Toyo Babcock Ltd. was established with capital of ¥1,750,000 (British B & W and Mitsui & Co., Ltd. held 60% and 40% of the share, respectively). All of the British B & W’s business operations in Japan were transferred to this company. |
| 1935 | The capital was increased to ¥2,250,000 (British B & W and Mitsui held 67% and 33% of the share, respectively). |
| 1936 | The capital was increased to ¥3,000,000 (British B & W 67% and Mitsui 33%). |
| 1951 | The capital became ¥101.37 million after the asset valuation reserve has been transferred (British B & W held 100% of the share). |
| 1953 | Hitachi Ltd. and B & W of U.K. jointly chartered Babcock-Hitachi K.K. (The capital was ¥360 million. Hitachi and British B & W held 50% of the share, respectively). The capital was increased to ¥180 million (British B & W held 100% of the share). |
| 1954 | Technical assistance agreement (the second technical assistance agreement) was concluded between Hitachi and British B & W. |
| 1959 | Technical assistance agreement was concluded between Hitachi and British B & W on the boiler with cyclone furnace and the once-through Benson boiler. |
| 1965 | The company merged with Hitachi Boiler Ltd. (Capital was increased to ¥1,235 million. Hitachi and British B & W held 85% and 15% of the share, respectively). |
| 1970 | Asia Projects Engineering Pte. Ltd. (APECO) was established. |
| 1971 | Technical assistance agreement was concluded between the company and American B & W on MgO boiler. The capital was increased to ¥1;,852.5 million (Hitachi and British B & W held 85% and 15% of the share, respectively). |
| 1974 | Kure Works was certified for the ASME “S”, “U” and “U2” stamps. |
| 1975 | The capital was increased to ¥2,637.5 million (Hitachi 80% and British B & W 20%). |
| 1977 | Technical collaboration agreement was concluded between the company and German Babcock on the Benson boiler. Technical collaboration agreement was concluded between the company and Stoke Boiler (a Netherlands company) on a small once-through boiler. |
| 1978 | The capital was increased to ¥3,000 million (Hitachi 80% and British B & W 20%). Kure Works was certified for the ASME “N”, “NA” and “NPT” stamps. |
| 1980 | Technical collaboration agreement was concluded between the company and Babcock Hydro Pneumatic Ltd. of U.K. on the ash handling system for coal fired power plants. |
| 1985 | BAIMEX Ingerieria y Servicio, S.A. de C.V. was established. |
| 1987 | Hitachi Ltd. came to hold 100% of the share. Annex of Akitsu Works was completed. |
| 1989 | Babcock-Hitachi (Philippines) Inc. (BHPI) was established. |
| 1990 | Clyde Babcock-Hitachi Pty., Ltd. (CBH) was established. |
| 1994 | The company was certified under ISO9001, the quality system. |
| 1995 | The capital was increased to ¥5,000 million (Hitachi held 100% of the share). |
| 1996 | Babcock-Hitachi Dongfang Boiler Co., Ltd. (BHDB) was established. |
| 1997 | The company was certified under ISO14001, the environmental management system. |
| 2003 | Babcock-Hitachi acquired the boiler division of Babcock Borsig Power Systems GmbH (BBPS) in Germany. |
| 2004 | Babcock Borsig Power Systems GmbH (BBPS) in Germany changed its company name to Babcock-Hitachi Europe GmbH. |
