The U.K. electrical grid was planned in the 1920s. Distribution voltages of 132kV were discussed. London needed more generating power as more electrical appliances were used. Battersea power station construction was started in the late 1920s. There were initial concerns about the effect of the sulphurous emissions from the chimneys spoiling buildings and affecting people's health adversely. The prevailing winds at Battersea were normally from the S.W so people and buildings located to the N E. were more likely to be affected. Gas scrubbing was initiated and the emissions of sulphur fumes were very much reduced. If the chimney emissions were coloured white, then this indicated that scrubbing was taking place. A grey smoke meant that the scrubbing had stopped.
A quote from the British Housewives' Association said that the proposed new power station with its smoke emissions "Seemed quite anomalous in that the body set up to provide a "smokeless form of heat energy" should itself lead to pollution on an unprecedented scale.""https://www.youtube.com/watch?v=VuRNzf9CR4M