Abstract:Based on the cost of denitration in thermal power to study the charge standard for disposing NOx, the measure standard was that ex-denitration was larger than the total expand by denitration. The outcome was that disposing NOx charge standards imposed the minimum value should be 1.2 RMB/0.95kg, at the end should reach 4.0 RMB/0.95kg or more. The total expand to income unit of electricity was 0.5%~5.0% when the the charge standard was 1.2~10.0 RMB/0.95kg. Therefore, scenario analysis showed that, if the charge standard was raised to 1.2 RMB/0.95kg in the twelfth five year plan, the total sewage charges will be 3.4~4.4 billion. If the sewage charges could be the denitration subsidies, the highest subsidies was 23~30 RMB/0.95kg, and the maximum grant amount of actual expenditures accounted for 23.1%~30.6%. Total expenditure unit of electricity consumption-income ratio was 1.5%~1.6%. The sewage charge was about 2.9~4.4 billion when disposing NOx charge standards imposed adjusted to 2.4 RMB/0.95kg in the thirteen five year plan. The sewage charge could be the incentive funds to the excess NOx reduction, in order to play the role of economic levers, and tap the potential of NOx emission reduction facilities.