China's war against smog means coal-reliant power companies will propose zero or ultra-low emissions standards for particulate matter in anticipation of tougher standards from central government, muncipalities and provinces.
Ultra-low emissions means bringing emissions from coal-burning plants down to the level of their gas-burning counterparts, which would tighter further existing limits on the amount of nitrous oxides (NOx), sulphur dioxide (SO2) and dust that coal-burning generators can emit.
These lower limits are already being implemented in places including Shanxi and Zhejiang provinces, but may be adopted by other provinces in order to conform with a future tightening of clean air laws by central government.
Fines for breaches of particulate emissions standards can be up to 5 million yuan, a great deal for a small power station or industrial plant, but much smaller than the costs of installing ultra low emissions technology at a big coal-fired power plant.
And even when Chinese power stations have new equipment installed, the challenge will be to get them to use it effectively, Jiang adds.
Writing on the wall?
Wu Yin, former head of the National Energy Administration, said the writing is on the wall for coal in the longer term if the world agrees measures to slow and then reverse growth in carbon emissions, and reduce the toxic legacy of the fuel that has powered industrialised economies for centuries.
However the coal industry says such predictions are exaggerated, adding that China will need to rely on its abundant supplies of domestic coal, which is likely to remain a good deal cheaper to burn than natural gas, much of which has to be imported or transported over vast distances.
This is a prospect that horrifies environmental groups, who blame the use of coal by countries such as China, US and the EU countries as a major cause of climate change.