Electrolyser Sizing Calculator

Enter your H2 production target and system parameters. Results update instantly as you adjust any value. Assumes PEM/ALK electrolysis with 1 MW modular stacks.

H2 demand (kg/day)

kg/day

Operating hours/day

hr/day

System efficiency (kWh/kg H2)

kWh/kg

System availability (%)

Operating hours/year

hr/yr

Sizing Results

Required Capacity

Stack Count

× 1 MW stacks

Annual Energy

MWh/yr

Water Consumption

L/day

Annual Energy Split

Assumptions: electrolyser core 82%, BOP 12%, compression 6% of total system energy.