§01 · Live workflow

From evidence to decision, in one traceable pass.

Two financial decision gates. The preliminary screen looks only at production; the final decision integrates storage, transport, environment, society, finance and uncertainty. Even when the preliminary result is unfavourable the user may continue — H₂VALIS never auto-rejects a project.

Live gatewayFX EUR/USD1.0842· ECB · annual avg 2024HICP 2024→2027×1.062· Eurostat · projectionGrid CI (BE)168gCO₂/kWh· Electricity MapsPEM LCOH3.4–5.9€/kg· H₂VALIS engineHYDRIX (weekly)€6.42/kg· EEX · Germanyretrieved 1970-01-01 00:00 UTC · illustrative

Step 00 / 20 · Space play/pause · ← → step · R reset

Inspector

Click any node to pause and inspect its inputs, outputs, evidence tier and governing equation.

The primary path walks automatically. Existing-plant and learning nodes stay visible on the bottom rail so attribution is never mistaken for plant design.

§02 · Two decision gates

The professor's rule: continue or stop is the user's choice.

Preliminary · production-only

Fast viability signal before storage or transport are defined

— Production CAPEX + OPEX + LCOH
— Cash operating margin €/kg
— Levelized margin = P_H₂ − LCOH_production
— Prelim NPV vs financial benchmark
— Storage and transport explicitly not yet included

Options: Continue · Revise inputs · Save and stop.

Final · delivered pathway

Complete decision on the delivered kilogram

— Integrated mass, energy, loss and cost balance
— NPV, IRR, payback, levelized margin, benchmark comparison
— Environmental + social profiles with evidence tiers
— Monte Carlo uncertainty and tornado sensitivity
— DHVM · Evidence Coverage · Confidence-weighted LCOH

Language is favourable / marginal / unfavourable / insufficient information — never "better than the bank".

§03 · Live-data gateway

Every retrieved value stores its provenance

Provider · series id · geography · observation date · retrieval timestamp · currency · unit · licence · retrieved / estimated / overridden. API credentials stay server-side; the browser never sees them.

ECB Data API

Literature

EUR reference FX

Annual-average default; daily spot display-only

Bank of Canada Valet

Literature

CAD FX + financial series

Eurostat HICP

Literature

Cost-year inflation index

World Bank Indicators

Proxy

Global inflation fallback

EIA Open Data

Literature

US electricity mix + price

ENTSO-E Transparency

Literature

EU electricity mix + market

Registration required

Electricity Maps

Literature

Grid carbon intensity

Licence must be checked

Google Routes / Mapbox

Calculated

Truck routing distance

Searoutes

Scenario

Port-to-port voyage distance

Voyage cost still requires calibration

Local utility / regulator

Literature

Industrial water tariff

Primary source; user upload supported

World Bank IBNET

Proxy

Water tariff benchmark

EEX HYDRIX

Scenario

Weekly German H₂ benchmark

Benchmark only — not universal price

§04 · Public H₂VALIS API

One envelope, every result

Endpoints · reserved for Wave 5

GET /v1/technologies
GET /v1/equations
GET /v1/data-sources
POST /v1/harmonize
POST /v1/production/calculate
POST /v1/storage/calculate
POST /v1/transport/calculate
POST /v1/impacts/calculate
POST /v1/finance/calculate
POST /v1/scenarios/calculate
POST /v1/learning/calculate

Response envelope · always

{
  "value": 5.42,
  "unit": "EUR2027/kg-H2",
  "reference_currency": "EUR",
  "reference_year": 2027,
  "equation_id": "PROD_PEM_CAPEX_V1",
  "model_version": "1.0.0",
  "source_ids": ["DOI:10.xxxx/…"],
  "evidence_class": "multi-source fitted",
  "valid_range": {"min": 1, "max": 2000, "unit": "MW"},
  "assumptions": [],
  "warnings": [],
  "calculated_at": "2027-06-14T09:14:22Z"
}

Ready to open the workspace?

Wave 2 turns this diagram into an actual project workspace with versioned scenarios and traceable results.

Open workspace →Read methodology