If sustainability is the new hallmark of good engineering then the best use for the former Battersea Power Station (NCE 17/24 April) is as London's energy from waste plant.
Access by river takes the traffic off the roads, the electricity can be used where it is generated in the middle of London and the hot water can be piped across the river to the Pimlico flats as it was in the original design: a process known today as thermal recycling.
Robert Freer, rfreer. dulwich@virgin. net