Battersea Power Station (now a bleeding art gallery) used to pipe waste hot water accross the Thames to heat some flats... a great idea! A mate's flat in the USA gets heated FOR FREE by waste heat from a nearby factory.
Cooling towers a thing of the past? Just pipe the excess around to those who could do with some heating help.
On a side note, whilst I was a Home Office Radio bod, we used to work on the aerials on the roof of DVLA Swansea... and often got caught in the plume from the nearby Crematorium's chimney.... and it didn't smell like roast pork....
