First question,
On what location this so-called decentralized geothermal plant?
How investors can have the assurance regarding into their investment?
If you invest and own 10% of the power plant, you will receive 10% of the profit (bitcoin mined) from the power plant.
If you contributed 10% on the powerplant build up then making automatically 10% share up on mining profits is too good to be true.Why?
Wont you consider on the expense on buying miners? Dont tell me that all would be equivalent.
Most geothermal resources are along tectonic plates, or the well defined 'Ring-of-Fire'
In the U.S. this means California, Nevada, Oregon, etc..
The investors could be assured of their ownership, because it would be in the form of a 'Security' a.k.a 'tradable financial asset' as approved from the governmental entity.
The 10% example was simplified, and meant profit. You are correct, without accounting for mining equipment, racks, operation and maintenance, etc... that would be revenue. The 10% (or whatever ownership) would be in respect to net profit from the operation.
These decentralized power plants would be in the form of a 'Special Purpose Vehicle', and would have only one purpose in life:
Mine Bitcoin and pay out the coins (profit) to the owners.