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009
Field Note · 009
Engineering on the scale of patience.
On the slipping timelines of fusion and small modular reactors. Spring 2026.
Helion has pushed its first net-energy date from 2024 to "later this decade." Commonwealth Fusion's SPARC is in commissioning. NuScale's first commercial SMR project was cancelled in 2023 and the program has been quietly rebuilding. Almost every credible nuclear timeline has slipped, by years, in the last 36 months.
01 /
This is not failure. It is the rediscovery of a kind of engineering the consumer-software industry has not done in a long time. Nuclear systems are built on geological time. The schedule is itself a piece of the technology. To work in this field is to commit, voluntarily, to outcomes you may not see.
02 /
The metaphor of disruption assumes the disrupted are not paying attention. In nuclear, everyone is paying attention. The slowness is structural. The slowness is also, in the literature, what makes the systems safe.
03 /
A startup culture trained on six-week sprints is now staffing companies whose product cycle is the working career of an engineer. The cultural retrofit is slower than the engineering.
We will eventually have clean baseload from fission and, later, fusion. We will look back at this decade as the one where a generation of operators, regulators, and investors had to learn, not in theory but in practice, what it felt like to build something for grandchildren they have not had yet.