The file "The Structure of Fuels at PKE" comprises data on fuels used to generate traded electric power and heat as well as the impact of electric power and heat production on the environment.

Pursuant to the:

• Ordinance of the Minister of Economy of 4 May 2007 on the specific conditions of operation of electric power engineering system (paragraph 37 subparagraphs 1 and 3),
• Ordinance of the Minister of Economy of 15 January 2007 on the specific conditions of operation of heat engineering system (paragraph 23 subparagraphs 3 and 4).