THE Battersea Power Station, which forms such a prominent landmark on the south side of the River Thames, will soon come into operation. It has been erected by the London Power Co., which was formed to secure the co-operation of the London electricity supply companies so as to reduce the cost by concentrating the generation of electricity in more efficient stations. It is one of the ‘selected’ stations adopted by the Central Electricity Board to supply the south-east of England electricity area. A description of it is given by I. V. Robinson in World Power for May. At present the station possesses two 70,000 kilowatt turbo-alternator sets and a 100,000 kw. set has been ordered. There are six Babcock and Wilcox boilers each evaporating 330,000 Ib. of steam per hour at a pressure of 650 Ib. per square inch and a temperature of 875° F. A jetty has been built parallel to the wharf which accommodates two of the company's 2,000–ton colliers at once. The coal is extracted by grabs and deposited on conveyors which take it to the boiler-house. Owing to the vicinity of the Houses of Parliament, Westminster Abbey, etc., it was necessary to take precautions so that the fumes would not act harmfully on these buildings. By means of induced draught fans the products of combustion are forced through ‘scrubbers’, passing across vertical surfaces in which water is flowing. They next pass over the main scrubbers consisting of cases of iron filings over which a stream of water flows. The iron acts as a catalyst converting SO2 into SO3. On reaching the chimney the gases first pass down a central chamber containing more steel sections and so have more oxide of sulphur abstracted. They then meet water containing alkaline salts which completes the purification. It is computed that 90–95 per cent of the oxide of sulphur has been eliminated.