Pricing

Four tiers, each opening the next scale. Monthly, cancel any time. No free tier and no trial — what is excluded is stated as plainly as what is included.

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Cell

Single-cell design, fully modelled.

£99/month

15 assessments / month

Scale-up: Single cell only

  • Full physics engine
  • Polarisation curve and loss breakdown
  • Novel subsystem corrections
  • AI scientific interpretation
  • Report export and design history
  • Stack scale-up
  • System-level analysis
Most chosen

Pro

Take a working cell to a stack.

£299/month

Unlimited assessments

Scale-up: Single stack

  • Everything in Cell
  • Interconnect resistance by material
  • Thermal gradients and cell-to-cell spread
  • Stack power and efficiency
  • Multi-stack systems
  • Balance of plant
  • Compression energy

Scale

Whole-system projection.

£899/month

Unlimited assessments

Scale-up: Multi-stack system

  • Everything in Pro
  • Balance of plant
  • Hydrogen compression energy
  • Annual output projection
  • Degradation and end-of-life
  • Multiple seats
  • API access
  • White-label

Enterprise

For teams and institutions.

£2,500/month

Unlimited assessments

Scale-up: Full system

  • Everything in Scale
  • Multiple seats
  • API access
  • White-label option
  • Direct founder support
Contact us

Prices in GBP, excluding any applicable tax. Billing is handled by Stripe; card details never reach PROTONYX.