| Chan Alfred Wing Kin | 25-Oct-21 | 26-May-22 | ED | | No reasons provided. |
| 26-May-22 | AuRep | | No reasons provided. |
| 01-Mar-07 | 25-Oct-21 | Ch | | |
| Chen Wei | 15-Mar-07 | 31-Dec-09 | ED | | |
| 08-Jan-01 | 15-Mar-07 | MD | | |
| Cheng Moses Mo Chi | 23-May-07 | | INED | | |
| Cheung Edwin Hon Kit | 08-Jan-01 | 23-May-07 | INED | | |
| Chow Oscar Vee Tsung | 04-Jun-12 | 08-May-15 | INED | | |
| Chow Yei Ching | 23-May-07 | 04-Jun-12 | INED | | |
| Fok Canning Kin Ning | 23-Dec-02 | 08-Aug-06 | NED | | |
| Ge Ming | 27-Sep-04 | 04-Jul-06 | INED | | |
| Ho John Hon Ming | 01-Mar-07 | 01-Jan-24 | ED | | Retirement |
| 15-Mar-07 | 01-Jan-24 | CoSec | | Retirement |
| 01-Jan-24 | MbESGC | | Retirement |
| Hu Zhanghong | 10-Nov-21 | 09-Mar-22 | INED | | Due to his other business commitments |
| 09-Mar-22 | MbNC | | Due to his other business commitments |
| Kee Martin Wai Ngai | 01-Jul-17 | 01-Sep-25 | COO, ED | | Resigned to become the Chief Operating Officer – Water and Environmental Business of the controlling shareholder of the Company, The Hong Kong and China Gas Company Limited. |
| 01-Sep-25 | MbESGC | | Resigned to become the Chief Operating Officer – Water and Environmental Business of the controlling shareholder of the Company, The Hong Kong and China Gas Company Limited. |
| 29-May-15 | 01-Jul-17 | ED | | |
| Kwan James Yuk Choi | 29-May-15 | 01-Jan-24 | INED | | To pursue his retirement |
| 01-Jan-24 | MbAC, MbCC, MbNC | | To pursue his retirement |
| 01-Feb-13 | 29-May-15 | NED | | |
| 01-Mar-07 | 01-Feb-13 | ED | | |
| Lai Wen Guang | 08-Jan-01 | 21-Apr-04 | Dep MD | | |
| Lau Shi Wa | 08-Jan-01 | 21-Apr-04 | ED | | |
| Law Margaret Wai Fun | 31-Dec-09 | 01-Jan-13 | ED | | |
| Law Wai Fun Maraget | 31-Dec-09 | 01-Jan-13 | ED | | |
| Lee Peter Ka Kit | 25-Oct-21 | | Ch, NED | | |
| Li Brian David Man Bun | 23-May-07 | | INED | | |
| Li Fujun | 08-Jan-01 | 01-Mar-07 | ED | | |
| Li Rupert Xiao Ru | 24-Apr-03 | 23-May-07 | INED | | |
| Liu Kenneth Kai Lap | 09-Sep-26 | | INED, MbAC, MbCC, MbNC | | |
| 18-Nov-21 | 09-Sep-26 | NED | | Re-designated to an Independent Non-executive Director. Following the redemption of the Convertible Bonds by the Company on 7th July 2026, Clean Energy (which nominated Mr. Liu) no longer has a right to nominate any director to the Board. Mr. Liu also resigned from Affinity Equity Partners group and no longer has any employment, office or advisory role with it, and was assessed by the Board to meet the independence guidelines. |
| Lo Tai On | | 15-Mar-07 | CoSec | | |
| Loh Christine Kung Wai | 20-Mar-26 | | ChESGC | | |
| 04-Apr-22 | | INED | | |
| Ou Ya Ping | 16-Nov-00 | 16-Mar-11 | ED | | |
| Ou Yaping | 01-Mar-07 | 16-Mar-11 | Fdr, ED | | |
| 16-Nov-00 | 01-Mar-07 | Ch, Fdr | | |
| Qiu John Jianhang | 10-Nov-21 | | ED | | |
| Shen Lian Jin | 21-Apr-04 | 19-Mar-09 | ED | | |
| Sun Hiu Lu | 08-Jan-01 | 24-Apr-03 | INED | | |
| Tang Francis Yui Man | 01-Mar-07 | 16-Mar-11 | Alt ED | | |
| 15-Jul-04 | 01-Mar-07 | V-Ch | | |
| 12-Nov-01 | 15-Jul-04 | ED | | |
| To Simon Chi Keung | 08-Aug-06 | 15-Feb-07 | NED | | |
| 23-Dec-02 | 08-Aug-06 | Alt NED | | |
| Wong Elsa Lai Kin | 01-Jan-24 | | CoSec | | |
| Wong Peter Wai Yee | 15-Mar-07 | | CEO | | |
| 01-Mar-07 | 15-Mar-07 | ED | | |
| Yim Raymond Chun Leung | 08-Jan-01 | 01-Mar-02 | NED | | |
| Zhang Ke | 04-Jul-06 | 23-May-07 | INED | | |
| Zhang Keyu | 29-May-03 | 01-Mar-07 | ED | | |
| Zheng Dunxun | 20-Feb-01 | 21-Apr-04 | NED | | |
| Zhou Heng-Xiang | 01-Sep-25 | | ED, MbESGC | | |
