Green's designs, manufactures, and services economisers and flue gas coolers to help power stations, industrial plants, and marine vessels improve efficiency and reduce costs. These products capture waste heat from boiler exhaust gases to preheat water and steam for various on-site uses like drying, heating, and electricity generation, lowering energy input needs. Green's manufactures custom economisers and coolers up to 6m x 20m x 4m in size at its UK factory.