The Daily Rhythm
When does power move? The duck curve, the daily spread, negative prices, capture price.
Software products,
shipped end to end.
Twenty years putting AR and planning software on factory floors, now in two products built with Claude.
Eight plain questions about European power, answered by thirty-six views pre-computed from open data on a fixed schedule, with no backend to keep alive.
pulse · the duck curve, €48 at midday to €152 in the evening
zone compare · Germany against France, NL and Austria
What's on the Grid
Generation mix, carbon intensity, residual load, and when gas sets the price.
Geography of Price
Where power flows and why prices split, in Germany, France, the Nordics and the UK.
When the Grid is Tested
Dunkelflaute, storage economics, adequacy, and how far the day-ahead forecasts miss.
The Bill
What flexibility is worth, and how a megawatt-hour becomes your monthly bill.
The Charge
Where Europe's cars and first electric trucks plug in, what a charge costs, and how much of the network is built.
The Load
Data centres, a flat line for a decade until AI: what they draw, what a token costs in energy, and where that power comes from.
The Build-out
What gets built, and how fast: solar and wind capacity by country and year, and how much of the time it runs.
One number for the business: 100 points across quality, value and moat. Around it, a score-free read on sentiment, IPOs and events. Each score shows its working: the figures behind every pillar, and how complete the data is. It is retired for now; the screenshots show it as it last ran.
the full scorecard for NVDA
the same score, on a phone
Both products were built the same way. Claude writes the tickets, the mockups, the code and the tests; a human makes the two decisions that matter, the plan and the release. Work moves in small vertical slices, each one gated, each one readable in a diff.
From intent to production
Intake
Jira & Notion, where work is raised
In parallel
Claude Cowork writes the ticket; Claude Design supplies mockups & specs
Issue
GitHub issue links ticket and design together
Claude Code
One issue, one branch, one worktree. You approve the plan.
Release
develop → staging → main, protected branches. You approve the release.
De-risked before any code
Propose the approach
Challenge it with a second model, two rounds
Human decision, weighing the trade-offs
Crystallize into a brief, then implement
Behind it, a testing gate on every session: failing-first tests, pre-commit hooks, detect-secrets. Wattlas alone carries 2,921 tests across 117 files: metric functions on inline fixtures, plus the assistant's own suite.
Two pipelines, one standard
StockScore: no keys in the pipeline
Cloud Run front and back, Cloud SQL behind a VPC, every secret in Secret Manager. The pipeline authenticates with Workload Identity Federation, so no JSON key is stored anywhere. PR checks and a Gemini-call guard sit in front of every deploy.
PR checks → gemini guard → deploy → Cloud Run
Wattlas: a cron, a commit, a redeploy
A scheduled job reruns the Python pipeline on the 1st and 15th at 05:17 UTC, commits only the JSON that changed, and the static site redeploys. Seven open data feeds, each isolated and fail-open, and nothing running between rebuilds.
open APIs → pipeline → data/*.json → redeploy
The two products above are the current chapter. Before them came augmented reality out of a research lab and into car plants, a German company to run, and the work I do now: leading a consulting team at Dassault Systèmes that connects manufacturing planning to what happens on the line.
It is told as six frames on a wall. Each one is faint pencil until you open it, then it inks itself in. The sixth is blank: you write the next one, and it arrives in my inbox with your line already in it.
Six frames
The lab years
Weimar, Bordeaux, Tokyo. How should people handle 3D content without a mouse? Five papers and a doctorate later, factories wanted the answer.
From prototype to product
Paris. Leading R&D at Diota, turning AR tracking research into something that survives factory light and moving parts.
Running the business
Stuttgart. Taking over the German company: P&L, hiring, and learning exactly what a business case must look like before anyone signs.
Where planning meets the floor
Dassault Systèmes. Leading the DELMIA Augmented Experience consulting team, connecting the digital twin to the people doing the work.
The independent practice
The two products above, designed, built and shipped end to end, with AI doing the typing and a human keeping the gates.
The next frame
Empty on purpose. Write one line into it and it becomes the start of a conversation.