[dredmorbius]

Agreeing with the above, also relevant:

- Heat pumps typically achieve better than 100% efficiency, though at modest temperatures (slightly above ambient room temperatures), and would be better suited to most space-heating applications.

- The key achievement of the described technology is very high temperature applications, such as metals smelting, though what advantages the described tech has over existing electric arc furnaces (utilising graphite electrodes, cheap and abundant and capable of 3,000 °C temps) is less than clear.