Printable solar cells with ASIC's? ASIC space heaters?
You seem to think that technology and/or efficiency figure in to the system power consumption formula. They do not. It does not matter how efficient the miners become, it does not matter if the ASICs get smaller/better/faster/cheaper. Most importantly it does not matter where you get the power from, assuming the same cost.
If you are assuming that printable solar cells are going to bring the average cost of power down under my $0.10 per KWh estimate then that would allow the Bitcoin network to use even more power than the estimate given.
If you think that miners can find a profitable use for the waste heat from the mining process then that would allow them to use even more power than the estimates given.
By design the amount of power consumed is directly propotional to the average amount of USD available per block (subsidy + fees) as show in the formula given above.
Within an era the power consumed is proportional to the price. If the price goes from $500/BTC to a sustained $5,000 per BTC the amount of power consumed by the network will rise to about 10x the former amount independent of efficiency and technology used.