On 2nd December morning, power plant in Shanghai Waigaoqiao receives an instruction from Shanghai municipal electric power company control center, 2 sets of installed capacity of 800000 KW gas generator begin to replace part of coal-fired generating set to generate electricity in order to cope with haze orange alert.

Emergency office of air quality heavy pollution in Shanghai starts severe pollution emergency mitigation measures to reduce emissions on 1 December 19, then the next day release a notice “warning upgraded to a serious pollution emergency measures”. Shanghai municipal electric power company takes quick response after receiving the warning message, according to the plan, start emergency measures to reduce emissions of the power industry of the electric power industry immediately: mediate a 300000KW coal-fired  generator set modified into gas generator set to generate electricity in advance, let a 600000 KW coal-fired generator set which finish overhaul postpone and connected to the grid, require all grid coal-fired generator set use high calorific value and low ash content of coal with high quality; Added two 400000 KW gas generators to contribute running. Under the premise to ensure the safety of power grid, according to power plant environmental information real-time monitoring system, give priority to dispatch low consumption, high efficiency and low emissions high-capacity generator set to minimize coal-fired generator sets pollutant discharge.

According to statistics, Shanghai power grid actively implements green dispatch from January to November, carry out energy conservation and emission reduction. This year calculate by hour, Large power generator set have replaced small generator set produced 2.514 billion KW/H more electricity, save about 139,300 tons of coal , reduce 1090 tons emission of sulfur dioxide and 940 tons emission of nitrogen oxide.