anx_V__point_6__table

| NOx | CO Combustion plants firing natural gas with the exception of gas turbines and gas engines | 100 | 100 Combustion plants firing blast furnace gas, coke oven gas or low calorific gases from gasification of refinery residues, with the exception of gas turbines and gas engines | 200 (4) | — Combustion plants firing other gases, with the exception of gas turbines and gas engines | 200 (4) | — Gas turbines (including CCGT), using natural gas (1) as fuel | 50 (2) (3) | 100 Gas turbines (including CCGT), using other gases as fuel | 120 | — Gas engines | 100 | 100 (1) Natural gas is naturally occurring methane with not more than 20 % (by volume) of inerts and other constituents. (2) 75 mg/Nm3 in the following cases, where the efficiency of the gas turbine is determined at ISO base load conditions: (i) gas turbines, used in combined heat and power systems having an overall efficiency greater than 75 %; (ii) gas turbines used in combined cycle plants having an annual average overall electrical efficiency greater than 55 %; (iii) gas turbines for mechanical drives. (3) For single cycle gas turbines not falling into any of the categories mentioned under note (2), but having an efficiency greater than 35 % – determined at ISO base load conditions – the emission limit value for NOx shall be 50xη/35 where η is the gas turbine efficiency at ISO base load conditions expressed as a percentage. (4) 300 mg/Nm3 for such combustion plants with a total rated thermal input not exceeding 500 MW which were granted a permit before 27 November 2002 or the operators of which had submitted a complete application for a permit before that date, provided that the plant was put into operation no later than 27 November 2003.

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Source: EUR-Lex CELLAR · retrieved 2026-08-09 · Text as consolidated on 2024-08-04; changes after this date are not shown.