The sulphur dioxide emissions of 12 coal-based thermal power plants located in a 300-km radius of Delhi can be reduced by as much as 67% if these facilities install flue gas desulfurization technology, a new analysis has found. There are 11 coal-based thermal power plants within a 300km radius of Delhi — Dadri TPP, Guru Hargobind TPS, Harduaganj TPS, Indira …