Abstract: Ultra Low Emission Retrofit reduces pollutant emissions,meanwhile the unit's energy consumption is increased. Through choosing coal-fired units in different areas and different capacity levels and focusing on energy consumption caused by devices and resistance,energy consumption of different retrofit projects and scheme was analyzed and studied. Energy saving and optimization measures were put forward, in order to provide solutions to the unit's overall energy efficiency improvement work on the next stage.

Key words: ultra low emission retrofit, energy consumption, station service power consumption rate, energy saving and optimization