1991 European Energy Charter

- signed on 25 April 1997

1994 Energy Charter Treaty

- approved for accession by the Energy Charter Conference on 3-4 December 1998 (CCDEC199816)
- ratified on 21 July 1999
- deposited on 19 November 1999
- entered into force on 17 February 2000

1994 Protocol on Energy Efficiency and Related Environmental Aspects

- approved for accession by the Energy Charter Conference on 3-4 December 1998 (CCDEC199816)
- ratified on 21 July 1999
- deposited on 19 November 1999
- entered into force on 19 March 2000

1998 Amendment to the Trade related provisions of the Energy Charter Treaty

- ratified on 21 July 1999
- deposited on 19 November 1999
- entered into force 21 January 2010

2015 International Energy Charter

- signed on 20 May 2015