Kardia Units I-II Megalopolis B Unit IV 16 Reduction of particulate emissions: High performance electrostatic precipitators installed in 1991 Reduction of SO2 emissions: wet gas desulphurisation system in operation in Unit IV since 1999; modernisation of the desulphurisation units under way. Reduction of NOx emissions: Low excess air, air staging, flue gas recirculation. Reduction of particulate emissions: High performance electrostatic precipitators in operation since 1993 Reduction of SO2 emissions: natural desulphurisation Kardia Units III-IV Modernisation of the cooling towers planned Reduction of particulate emissions: High performance electrostatic precipitators in operation since 2003 and 2004 respectively Reduction of SO2 emissions: natural desulphurisation Modernisation of steam turbines completed Ptolemaida Units I-III Modernisation of the cooling towers completed Reduction of particulate emissions: High performance electrostatic precipitators in operation since 1987 Reduction of SO2 emissions: natural desulphurisation Modernisation of the cooling towers completed Ag. Dimitrios Units I, III, IV Ptolemaid a Unit IV Upgrading of the boiler in Unit II Reduction of particulate emissions: High performance electrostatic precipitators in operation since 1994 Reduction of SO2 emissions: natural desulphurisation Modernisation of the cooling towers completed Reduction of particulate emissions: Upgrading of existing and installation of new electrostatic precipitators to be completed by 2007-2008 Reduction of SO2 emissions: natural desulphurisation Reduction of NOx emissions: Low excess air, air staging, flue gas recirculation. Modernisation of cooling towers in units I-IV planned for 2008 Ag. Dimitrios Unit II Modernisation of steam turbines and of preheating system for condensates planned for 2008 Reduction of particulate emissions: High performance electrostatic precipitators in operation since May 2006; modernisation of existing and introduction of new precipitators should be completed by late 2007 Reduction of SO2 emissions: natural desulphurisation Reduction of NOx emissions: Low excess air, air staging, flue gas recirculation. Melitis Ag. Dimitrios Unit V Modernisation of steam turbines and of preheating system for condensates planned for 2008 Reduction of particulate emissions: High performance electrostatic precipitators in operation since 1999 Reduction of SO2 emissions: natural desulphurisation Reduction of NOx emissions: Low excess air, air staging, flue gas recirculation. Reduction of particulate emissions: High performance electrostatic precipitators operate in conjunction with a wet gas desulphurisation system Reduction of SO2 emissions: A wet gas desulphurisation system in operation Amynteon I-II Reduction of NOx emissions: Low excess air, air staging, flue gas recirculation. Reduction of particulate emissions: High performance electrostatic precipitators in operation in Units 1 and II Reduction of SO2 emissions: natural desulphurisation Reduction of NOx emissions: Low excess air, air staging, flue gas recirculation. Modernisation of the cooling towers completed

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