Not IT, but involving many tonnes of copper and heat; I have seen organisations in the USA calling in local fire response services to point their pumps at substation transformers to increase their cooling capabilities over and above what the traditional oil radiator-and-fan approach can do.
It is, from the standpoint of cooling highly effective. One has to question whether asset management or planning practises are fit for purpose to "survive" on one transformer rather than installing two rated to take the load in question.
For the record, in the UK, it is can be a criminal act to operate HV equipment beyond it's rated capability.
A/C because not hard to identify what organisation I must be in to be able to write this.