Aha, I see where we are coming at this from different angles. Thanks for your feedback. I'm looking for designs that incorporate passive elements that last ide

Aha, I see where we are coming at this from different angles. Thanks for your feedback. I'm looking for designs that incorporate passive elements that last ideally 100+ years that are reusable in modular sections, amortizing cost-effectiveness over generations. For that criteria, below-frost-line earth-covered, foamed glass building envelopes meets my requirements, and I'm happy to set aside 6-12 feet of foamed glass insulation after digging down enough to get below the frost line to achieve the thermal control I'm seeking. I'm looking for dehumidification to consistently 5-8%, with temperature in deep freeze range (-30 to -50°C). I've so far been stumped finding someone who has already, or figuring out myself how to passively (or with about the energy consumption of a Pi Zero per day) capture and use elsewhere the heat hitting panels to manage their thermal cycling. Nor have I been able to find a self-cleaning (superhydrophobic and/or appropriate wettability) coating that can be lifecycle rated to the timeframe I'm seeking. I think if we can control those, then solar panel lifetimes can be extended to 100 years at 20% degradation ("80% 'efficiency'"). Unfortunately, I've been stymied trying to find the lifespan of gallium-arsenide solar panels. Probably because their three-order of magnitude cost differential limiting them mostly to outer space applications where the weight-to-efficiency savings are the primary design motivator, and no one particularly cares about lifespan as long as it outlasts the design life of the satellite, which is way less than the 100+ years I'm seeking. Solar panels already have a pretty decent LifeCycle Assessment compared to coal and natural gas, though their de-manufacturing/re-manufacturing tech is still at a nascent stage. I simply have a different goal than most people with my requirements for long duration lifespans.