See https://www.quaise.energy/
https://twitter.com/Andercot/status/1664504663025283072
The idea is this: you build an overpowered microwave that can melt through solid rock, then point it straight down. The further you go, the warmer the earth gets, and if you go far enough you can use that heat to build a power plant.
Their website lists this milestone for "2024":
First full-scale hybrid drilling rig combining conventional rotary drilling and millimeter wave drilling capabilities.
This market resolves YES if Quaise, or technology provided by Quaise, is used to dig a hole at least 1km deep. Only counts if there's some kind of microwave action involved, I won't count purely conventional drilling. Resolves NO if there's no report of Quaise doing this by 1 Jan 2025.