My older thread about geothermal, thermoelectric, & solar talked about combinations. My twitter comment earlier today was about getting a higher voltage “for free” in the electricity that is initially generated, prior to being stored or transformed. For the hot, nearly equatorial Indian climate, some solar needs active cooling which might exceed the transfer rate of the geothermal system, depending on the sizing ratios of solar panel area to underground coil surface area. Geothermal still runs at night when the sun is gone down. It seems that the design should be a control system that can vary both the velocity of active coolant pumping, & active cooling of the flow if necessary. Trying to generate steam release to the atmosphere, capturing some of the pressure is another idea, though it probably wouldn’t fit the religious installation concept.
Thermoelectric contribution of metal rods can still play a positive role.

I rapped some more about heat exchange concepts for warm climates like India, where cooling power is the main concern. Points added:

Roof structures can double as antennae for new networking concepts/media

Fluid flow through roof structures, partly in gaseous state, should be at higher velocity & faster moving compared to in ground coil in cold. A lattice of connections can make it easier to partly auto-transport the hottest gas & fluid to the apex of cooling, and this can be put safely out of harm’s reach.

The electrical grounding things that I do for anti-EMF here have the effect of cooling. Harvesting heat from paneling is viable & contributing.

Where power outages & brown outs are a concern, “Always Cool” can be a good marketing logo/concept.