But wholesale prices shift significantly by time of day, especially in the spring and fall. California’s wholesale prices dipped to the negatives during the days this past spring, hitting -$26/MWh at one point in April. One can imagine projects that only mine when energy is cheap or Bitcoin is expensive, in places that can take advantage of that price volatility.
There are also a few projects that don’t rely on grid electricity because they’ve provisioned their own energy sources (one creative solution is a shipping container with a data center powered by waste flaring of natural gas at oil wells).
So I’d think the price volatility would make it hard to derive a meaningful calculation of energy use from real-time electricity pricing, rather than real-time computational complexity.
In addition to the stone/clay based works that you might be thinking of, I find certain metalworking sculptures to be interesting, too. Alexander Calder made a bunch of red steel sculptures, almost architectural art, in addition to things like dynamic mobiles. Louise Bourgeois’s “Maman” is an interesting one, too.
There are small metal sculptures, too. From little trinkets made from wire, to welded metal parts, to elaborate chandeliers, these all involve artistic creativity in manipulating materials in a three dimensional space, and it’s a skillset that I admire and respect (and do not have any, myself).