| KIURU, Ari Juhani ACTIVE | Director | 15 Jun 2023 | | United Kingdom | October 1963 | PO BOX 30, Bo'Ness Road, Grangemouth, FK3 9XQ, United Kingdom |
| PAIVARINTA, Mikko Antero ACTIVE | Director | 01 Jul 2026 | | Finland | December 1971 | 55, Baker Street, London, W1U 7EU, United Kingdom |
| WALLIN, Minna Maarit ACTIVE | Director | 15 Jun 2023 | | Finland | May 1982 | Keilalahdentie 2-4, Espoo, 02150, Finland |
| BALDWIN, Stephen Francis John RESIGNED | Secretary | 03 Nov 1992 | 17 Aug 1995 | | | 18 Jaffray Road, Bromley, Kent, BR2 9NR |
| PELTOLA, Lauri Tapio RESIGNED | Secretary | 12 May 1997 | 16 Sep 2002 | | | 3 Denbigh Gardens, Richmond, Surrey, TW10 6EN |
| PELTOLA, Lauri Tapio RESIGNED | Secretary | | 03 Nov 1992 | | | 3 Queens Crescent, Richmond, Surrey, TW10 6HG |
| CLIFFORD CHANCE SECRETARIES LIMITED RESIGNED | Secretary | 17 Aug 1995 | 12 May 1997 | | | 200 Aldersgate Street, London, EC1A 4JJ |
| GOODWILLE LIMITED RESIGNED | Secretary | 16 Sep 2002 | 01 Apr 2022 | | | 24, Old Queen Street, London, SW1H 9HP, United Kingdom |
| ANDERSSON, Heikki Tapani RESIGNED | Director | 03 Oct 2007 | 17 Nov 2008 | Finland | June 1958 | Nuottatie 10 1, Espoo, Fin 02230, FOREIGN, Finland |
| ANDERSSON, Heikki Tapani RESIGNED | Director | 15 Mar 2003 | 10 Nov 2003 | Finland | June 1958 | Nuottatie 10 1, Espoo, Fin 02230, FOREIGN, Finland |
| DEANE, John Anthony RESIGNED | Director | 07 May 1996 | 02 Aug 2000 | England | January 1946 | Aprils End, Nairdwood Lane, Prestwood, Great Missenden, Buckinghamshire, HP16 0QH |
| ENGLUND-SIIRONEN, Ina Johanna Emilia RESIGNED | Director | 18 Jun 2020 | 14 Dec 2022 | Finland | May 1981 | Keilalahdentie 2-4, Espoo, 00048, Finland |
| ERHOLM, Juha Pekka Mikael RESIGNED | Director | 09 Aug 2017 | 01 Jan 2021 | Finland | August 1980 | PO BOX 100, Fortum, Espoo, 00048, Finland |
| HAWES, Steve RESIGNED | Director | 09 Feb 2004 | 10 Apr 2007 | | February 1959 | 36 Hazel Croft, Werrington, Peterborough, Cambridgeshire, PE4 5BJ |
| HENRIKSSON, Ari Erik RESIGNED | Director | 01 Nov 2005 | 08 Apr 2008 | | February 1961 | 10 Ackroyd Place, Shenley Lodge, Milton Keynes, Buckinghamshire, MK5 7PA |
| HUOPALAHTI, Kari Jalmari RESIGNED | Director | | 08 Feb 1994 | | March 1947 | Isokaari 20 B37, Helsinki, Finland |
| KANGAS, Veli Matti RESIGNED | Director | 16 May 2001 | 15 Mar 2003 | | March 1943 | Hilatie 31, Helsinki, 00390, FOREIGN, Finland |
| KOHTAMAKI, Kimmo Ilari, Mr RESIGNED | Director | 01 Nov 2018 | 02 Jul 2021 | Finland | August 1969 | C/O Fortum Power And Heat Oy, Keilalahdentie 2-4, Espoo, 02150, Finland |
| KOLLANUS, Vesa-Pekka RESIGNED | Director | 01 Apr 2020 | 01 Jan 2024 | Finland | October 1971 | Keilalahdentie 2-4, Espoo, 02150, Finland |
| KYLMALA, Vesa Juhani RESIGNED | Director | 02 Jul 2021 | 15 Jul 2022 | Finland | April 1974 | Keilaniementie 1, Espoo, 02150, Finland |
| LEMSTROM, Mikael RESIGNED | Director | 17 Nov 2008 | 21 Aug 2009 | | June 1967 | Tyskaksentie 18 B, Espoo, 02330, Finland |
| LEPIKKO, Juha Matti Sakari RESIGNED | Director | 10 Nov 2003 | 06 Jun 2006 | | March 1960 | Ajomiehenkuja 4c, Espoo, 02940, Finland |
| MAJANEN, Sakari RESIGNED | Director | 09 Nov 2001 | 09 Feb 2004 | | May 1954 | 26 The Steynings, Peterborough, PE4 6QL |
| MANNER, Matti Pekka RESIGNED | Director | 18 Jun 2020 | 02 Jul 2021 | Finland | February 1983 | P.O. Box 1, Espoo, 00048, Finland |
| MASO, Vesa Juhani RESIGNED | Director | 01 Aug 2012 | 01 Jun 2016 | Finland | October 1960 | Pl 100, Fortum, 00048, Finland |
| OSTERLUND, Pekka Juhani Kallenpoika RESIGNED | Director | 21 Sep 1995 | 31 Dec 2005 | | August 1953 | 11 Anaconda Gardens, Chenley, Brook End, Milton Keynes, Buckinghamshire, MK5 7FN |
| PAATILAINEN, Pekka RESIGNED | Director | | 10 Dec 2001 | | September 1948 | Aallokko 14 B 4, 02320 Espoo, Finland |
| PAIVARINTA, Erkki Olavi RESIGNED | Director | 21 Aug 2009 | 28 Apr 2011 | | June 1948 | Vuoripolku, 2, Inkoo 10210, Finland |
| PAIVARINTA, Erkki Olavi RESIGNED | Director | 06 Jun 2006 | 08 Apr 2008 | | June 1948 | Vuoripolku 2, Inkoo, 10210, Finland |
| PAIVARINTA, Erkki Olavi RESIGNED | Director | 01 Jan 1995 | 07 Dec 2001 | | June 1948 | Vuoripolku 2, Inkoo, 10210, Finland |
| PESOLA, Paivi Marjo Helena RESIGNED | Director | 09 Feb 2004 | 01 Sep 2006 | | March 1956 | Koydenpunojank 8h173, Helsinki, SF00180, Finland |
| PIISPA, Timo Juhani RESIGNED | Director | 15 Jun 2023 | 29 Nov 2024 | United Kingdom | June 1974 | Keilalahdentie 2-4, Espoo, 02150, Finland |
| RIALA, Olli Pekka RESIGNED | Director | 09 Nov 2001 | 15 Mar 2003 | | November 1948 | Sinitiaisentie 13a, Espoo, 02660, FOREIGN, Finland |
| RUSTON, Michael John RESIGNED | Director | | 29 Mar 1996 | | March 1948 | 19 Ambleside Crescent, Farnham, Surrey, GU9 0RZ |
| SAARIMAA, Kalle Severi RESIGNED | Director | 22 Jun 2022 | 31 May 2023 | Finland | February 1983 | Keilalahdenkatu 2-4, Pl 100, Fortum, 00048, Finland |
| SALOSAARI, Esko Ilmari RESIGNED | Director | 15 Mar 2003 | 08 Apr 2008 | | June 1950 | Laurinniityntie 5 B 11, 00440 Helsinki, Finland, FOREIGN |
| SUOMI, Juha Olavi RESIGNED | Director | 28 Feb 2025 | 19 Mar 2026 | Finland | March 1966 | C/O Fortum Oyj, P.O. Box 100, Fortum, 00048, Finland |
| SUOMI, Juha Olavi RESIGNED | Director | 02 Oct 2009 | 01 Sep 2018 | Finland | March 1966 | 10, Piispanportti, Pob 100, Espoo, 00048, Finland |
| TOIJALA, Ilkka Juhani RESIGNED | Director | 01 Jan 2024 | 28 Feb 2025 | Finland | January 1960 | Pob 100, Fortum, Espoo, 00048, Finland |
| TOIJALA, Ilkka Juhani RESIGNED | Director | 01 Jun 2016 | 09 Aug 2017 | Finland | January 1960 | Pl 100, Fortum, 00048, Finland |
| TOPPARI, Jan Mikael, Mr. RESIGNED | Director | 08 Feb 2010 | 29 Feb 2012 | Finland | February 1975 | Fortum Oyj, Keilaniementie 1, Espoo, 00048, Finland |
| VAATAINEN, Reija Irmeli RESIGNED | Director | 19 Dec 2006 | 08 Feb 2010 | | January 1956 | Vemmelsaarentie 6 C 16, Espoo, 02130, FOREIGN, Finland |
| VAUKONEN, Markku Antero RESIGNED | Director | 03 Oct 2007 | 08 Apr 2008 | | July 1964 | Lukionhalde 12, Espoo, 02710, FOREIGN, Finland |
| VINNAMO, Hannu Aulis Juhani RESIGNED | Director | 26 Mar 2008 | 02 Oct 2009 | | October 1960 | Mustanhalssinkuja 7, Helsinki, 00760, Finland |
| WEBER, Samuel Anders RESIGNED | Director | 18 Jun 2020 | 15 Jun 2023 | Finland | October 1973 | P.O. Box 1, Espoo, 00048, Finland |