With regard to the second aspect, the operational projections for thermal power plants (both conventional and combined cycle plants) take into consideration the current system for trading in emission rights, the allocation contained in the national allocation plans, and the foreseeable trend in the price of emission rights. Revisions to the Integrated Pollution Prevention and Control Directive based on the Large Combustion Plant Directive and other emissions standards entail the application of the strictest emission limits for certain atmospheric pollutants (SOof existing facilities.