Guided engineering journeys
A journey joins the explanation, the calculation and the deliverable. Each stage names the engine that produces its numbers, the assumption the result rests on, and the limit the engine cannot cross. Progress is recorded on your device; it is not a score and not evidence of professional competence.
Preview journeys
A preview has working stages and engine-bound numbers, but its content has not completed independent engineering review. It is excluded from search while it remains a preview, and every page says so.
Solar PV and Battery: Full Engineering Workbench
Take a solar PV and battery project from a written design basis through yield, electrical design, storage, dispatch, economics and a defended scenario choice, and export a limitation-aware report.
AI Data Center: Full Engineering Workbench
Carry an AI workload from rack power through electrical demand, redundancy, cooling, PUE, cost and commissioning to a defended preliminary design package.
In development
Draft journeys are not published. Some have no public stages yet; others may expose noindex development workbenches for review and learning. Development routes remain excluded from search/sitemap by existing protections and are not engineering-approved.
- Green Hydrogen Plant 15 development stages / noindex / not published
How this stays honest
Numbers come from engines
A calculation stage points at a registered engine. A figure is rendered from that engine at runtime, never typed into the journey copy. An unknown engine id fails the build instead of showing an empty result.
Planned is labelled planned
A capability that does not exist is shown as unavailable. There are no placeholder numbers, no simulated charts and no "coming soon" results that look like calculations.
Review is separate from progress
Opening a stage records progress on your device. It does not prove correctness or competence. Finished journeys carry a review state, sources and explicit limitations.
Looking for a single figure? The calculator catalogue and the Learn hub remain the shortest routes to an answer.