- look up "infrasound" and "undercutting minimum distances", better use something else than Google for this.
- also check the requirements for the base materials: concrete, aluminium, fiber-reinforced plastic. Calculate the energy requirements for producing them.
- familiarize yourself with the space requirements (~ two acres of highly compacted soil, not including access roads)
- duration and disposal
- soil dehydration, other environment impact issues
- ... and as always of course, base load capability and storability
