Electrolyzer Comparison Tool

Electrolyzer Manufacturer Comparison

Compare specifications, costs, and performance metrics across leading electrolyzer vendors

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Detailed Specifications

Specification
🇬🇧
ITM Power
NEPTUNE V / POSEIDON
🇳🇴
Nel Hydrogen
A Series Alkaline
🇳🇴
Nel Hydrogen
MC/PSM Series PEM
TechnologyPEMAlkalinePEM
Capacity Range5-120 MW1-500 MW1-20 MW
Efficiency50 kWh/kg H₂42 kWh/kg H₂52 kWh/kg H₂
Purity99.999%+99.9%99.999%+
Response Time1 second5-10 seconds2 seconds
CAPEX$1160/kW$750/kW$1200/kW
OPEX (annual)$35/kW/yr$25/kW/yr$38/kW/yr
Expected Lifetime20 years25 years20 years
Load Following
Self-Pressurizing
Modular Design
Outdoor Rated

Cost Comparison

ITM Power NEPTUNE V / POSEIDONNel Hydrogen A Series AlkalineNel Hydrogen MC/PSM Series PEM040080012001600Cost ($)
  • CAPEX ($/kW)
  • OPEX ($/kW/yr)
  • Total 10yr

Performance Comparison

EfficiencyResponse TimeLifetimeCost CompetitivenessScalability03610
  • ITM Power
  • Nel Hydrogen
  • Nel Hydrogen

All metrics normalized to 0-10 scale for comparison

🇬🇧
ITM Power

NEPTUNE V / POSEIDON

Advantages
  • +Fastest response time (1 sec)
  • +Highest purity output
  • +Proven track record in Europe
  • +Self-pressurizing capability
Considerations
  • -Higher capital cost
  • -Limited manufacturing capacity
  • -Newer to gigawatt-scale projects
Recent Projects
  • • 710 MW Germany order
  • • 120 MW Uniper project
  • • 50 MW standardized plant
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🇳🇴
Nel Hydrogen

A Series Alkaline

Advantages
  • +Best energy efficiency (3.8-4.4 kWh/Nm³)
  • +Lowest capital cost
  • +Longest lifetime (25 years)
  • +Proven alkaline technology
Considerations
  • -Lower purity vs PEM
  • -Slower response time
  • -Requires external compression
  • -Less suitable for intermittent operation
Recent Projects
  • • 1 GW Mississippi Clean Hydrogen Hub
  • • 1 GW annual manufacturing capacity
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🇳🇴
Nel Hydrogen

MC/PSM Series PEM

Advantages
  • +High purity output
  • +Fast response time
  • +Excellent for renewable integration
  • +Compact footprint
Considerations
  • -Higher cost than alkaline
  • -Shorter lifetime than alkaline
  • -Indoor installation preferred
  • -Higher maintenance requirements
Recent Projects
  • • Multiple 1-20 MW installations globally
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