| Cheng Mo Chi Moses | 23-May-07 | | INED | | |
| Lee Peter Ka Kit | 25-Oct-21 | | Ch, NED | | |
| Li Brian David Man Bun | 23-May-07 | | INED | | |
| Liu Kenneth Kai Lap | 09-Sep-26 | | INED, MbAC, MbCC, MbNC | | |
| Loh Christine Kung Wai | 20-Mar-26 | | ChESGC | | |
| 04-Apr-22 | | INED | | |
| Qiu John Jianhang | 10-Nov-21 | | ED | | |
| Wong Elsa Lai Kin | 01-Jan-24 | | CoSec | | |
| Wong Peter Wai Yee | 15-Mar-07 | | CEO | | |
| Zhou Hengxiang | 01-Sep-25 | | ED, MbESGC | | |
| Liu Kenneth Kai Lap | 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. |
| 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. |
| Ho John Hon Ming | 01-Mar-07 | 01-Jan-24 | ED | | Retirement |
| Kwan James Yuk Choi | 29-May-15 | 01-Jan-24 | INED | | To pursue his retirement |
| Ho John Hon Ming | 15-Mar-07 | 01-Jan-24 | CoSec | | Retirement |
| 01-Jan-24 | MbESGC | | Retirement |
| Kwan James Yuk Choi | | 01-Jan-24 | MbAC, MbCC, MbNC | | To pursue his retirement |
| Chan Alfred Wing Kin | 25-Oct-21 | 26-May-22 | ED | | No reasons provided. |
| 26-May-22 | AuRep | | No reasons provided. |
| 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 |
| Chan Alfred Wing Kin | 01-Mar-07 | 25-Oct-21 | Ch | | |
| Kee Martin Wai Ngai | 29-May-15 | 01-Jul-17 | ED | | |
| Kwan James Yuk Choi | 01-Feb-13 | 29-May-15 | NED | | |
| Chow Oscar Vee Tsung | 04-Jun-12 | 08-May-15 | INED | | |
| Kwan James Yuk Choi | 01-Mar-07 | 01-Feb-13 | ED | | |
| Law Margaret Wai Fun | 31-Dec-09 | 01-Jan-13 | ED | | |
| Law Wai Fun Maraget | 31-Dec-09 | 01-Jan-13 | ED | | |
| Chow Yei Ching | 23-May-07 | 04-Jun-12 | INED | | |
| Ou Yaping | 01-Mar-07 | 16-Mar-11 | Fdr, ED | | |
| Tang Francis Yui Man | 01-Mar-07 | 16-Mar-11 | Alt ED | | |
| Ou Yaping | 16-Nov-00 | 16-Mar-11 | ED | | |
| Chen Wei | 15-Mar-07 | 31-Dec-09 | ED | | |
| Shen Lianjin | 21-Apr-04 | 19-Mar-09 | ED | | |
| Cheung Edwin Hon Kit | 08-Jan-01 | 23-May-07 | INED | | |
| Li Rupert Xiao Ru | 24-Apr-03 | 23-May-07 | INED | | |
| Zhang Ke | 04-Jul-06 | 23-May-07 | INED | | |
| Chen Wei | 08-Jan-01 | 15-Mar-07 | MD | | |
| Lo Tai On | | 15-Mar-07 | CoSec | | |
| Wong Peter Wai Yee | 01-Mar-07 | 15-Mar-07 | ED | | |
| Li Fujun | 08-Jan-01 | 01-Mar-07 | ED | | |
| Ou Yaping | 16-Nov-00 | 01-Mar-07 | Ch, Fdr | | |
| Tang Francis Yui Man | 15-Jul-04 | 01-Mar-07 | V-Ch | | |
| Zhang Keyu | 29-May-03 | 01-Mar-07 | ED | | |
| To Simon Chi Keung | 08-Aug-06 | 15-Feb-07 | NED | | |
| Fok Kin Ning Canning | 23-Dec-02 | 08-Aug-06 | NED | | |
| To Simon Chi Keung | 23-Dec-02 | 08-Aug-06 | Alt NED | | |
| Ge Ming | 27-Sep-04 | 04-Jul-06 | INED | | |
| Tang Francis Yui Man | 12-Nov-01 | 15-Jul-04 | ED | | |
| Lau Shi Wa | 08-Jan-01 | 21-Apr-04 | ED | | |
| Lai Wenguang | 08-Jan-01 | 21-Apr-04 | Dep MD | | |
| Zheng Dunxun | 20-Feb-01 | 21-Apr-04 | NED | | |
| Sun Hiu Lu | 08-Jan-01 | 24-Apr-03 | INED | | |
| Yim Raymond Chun Leung | 08-Jan-01 | 01-Mar-02 | NED | | |
