The idea is simple.
Cities need to cool down. One way is to take advantage of the problem we have with overheated pavement and roads.
If you draw the heat (air suction?) from these surfaces and combine that with a chilled mass. In a ?underground heat storage. Then chill another storage to minus degrees. Using solar energy? By the way. Does the cold storage need to be as big as the heat storage?
I wonder if you then can create electricity from a temperature difference driven process.
Perhaps something like this can take reduce the need for air conditioners. Improve conditions for rain (no overheated surfaces) and more.