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As opposed to heating, one area of high electricity consumption that I think is viable is using the earth as a heat sink for neighborhoods with high summer air temps.  Caves like the Carlsbad Caverns stay at a steady temp of around 66F year round regardless of summer air temperatures.  By pumping water underground to cool it and then bringing it back up and using a forced air radiator system instead of an HVAC system, you could keep buildings at a comfortable 70F or so in summer.  That would work great in a place like TX.

https://www.kxan.com/news/local/austin/geothermal-energy-showcased-in-austin-potential-powerhouse-for-texas-grid/

Geothermal energy showcased in Austin, potential powerhouse for Texas' grid

RE