Three linked formulas mirror how Arctic hydrogen operators plan a terminal: how much the electrolyzer stack can make, how much a fixed cryo-tanker schedule can actually move to market, and how clean the whole chain is.
daily output (t/d) = P x 24 x eta / e
monthly supply (t) = min(output x 30, voyages x 4,800)
carbon (kg CO2e/kg) = 10 x (1 - r) + 0.9 x r
- P — electrolyzer capacity in MW.
- eta — fixed 74% stack conversion efficiency.
- e — 39.4 kWh/kg, the HHV energy content of hydrogen.
- 4,800 t — the terminal's fixed cryogenic storage cap per voyage; supply is capped by production or by the ship schedule, whichever is smaller.
- r — renewable energy share (0–1); a fully renewable feed still carries a small residual footprint from backup grid power and materials.
Each bar is normalised 0–1 against a realistic reference ceiling, so it saturates rather than shooting off-scale at extreme settings — taller, brighter bars mean the system is closer to its optimum.