[ Blog // field notes ]Notes from
Notes from
the valley.
What we've learned scaling hydrogen, batteries and electrochemical systems across Europe.
Hydrogen
21 May 2026 · 6 min
Why hydrogen prototypes work — and then fail at scale.
The same pattern across six years of European deeptech energy: brilliant science, promising prototypes, and a supply chain nobody modelled until it was too late.
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Manufacturing
9 Apr 2026 · 8 min
The SOEC certification timeline nobody plans for.
DEKRA at TRL 6 is not a checkpoint — it's a redesign trigger. A practical map of what to validate before you freeze architecture.
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Battery
2 Mar 2026 · 5 min
Treat supply chain as a design constraint, not a procurement problem.
The cheapest way to derisk a hydrogen or battery scale-up is to let supplier reality shape the BOM before the BOM shapes the supplier search.
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