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Interestingly, some large buildings in NYC also use a "steam chiller" hooked into the city steam system to provide air conditioning: https://untappedcities.com/2021/07/09/new-york-city-steam-sy...

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Downtown Chicago has something similar, one of the largest chilling networks in North America.

https://youtu.be/H50FNOgkpik

Toronto, Canada also:

https://www.toronto.ca/services-payments/water-environment/e...

Lots of opportunities for thermal efficiencies in dense urban areas.

My university had its own combined cycle power/steam/chiller plant, although in structure you could think of it as a steam plant with generators and chillers that could be switched as needed. I would have guessed that a number of universities do, but my university had a relatively larger power systems program than others regionally.

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