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Industrial process gas

Industrial Hydrogen Generator

Four inputs decide whether an on-site hydrogen project holds up: concurrent peak demand, gas quality at the delivery point, the availability target, and the cost comparison over the whole operating period. Systems from 0.5 to 200 Nm³/h, skid-mounted or containerised.
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Redundancy Options
0.5–200
Nm³/h system range
99.999%
Hydrogen purity
By model
Delivery pressure
Modular
Redundancy by design
Industrial PEM electrolyzer system supplying on-site hydrogen to a process plant
Reference configuration shown. Supplied equipment and appearance depend on the approved specification.
Project scope

Define the package before comparing prices

Use the PEM system range for on-site production within 0.5–200 Nm³/h. This application review covers the gas-supply requirement; it does not replace a model datasheet.
01 · Inputs
Electrical supply, feed water and cooling interfaces.
02 · Generation
Electrolyzer and agreed gas-treatment equipment.
03 · Delivery
Outlet pressure, buffer, distribution and sampling point.
04 · Continuity
Agree backup supply and maintenance coverage.
Compression, storage vessels, site piping and standby gas are included only when listed in the quotation. Compare electricity, water, maintenance and backup costs against delivered gas using the same annual demand.
Purpose & value

Where industrial hydrogen projects go wrong

Three patterns account for most projects that are re-specified within a year. None of them is about the electrolysis technology itself.

Sized on average consumption

Consumers cycle and their peaks overlap. A system sized on a daily average is short during the one hour when three lines draw at once — and that hour is usually the production-critical one.

Purity quoted at the wrong point

The published figure is measured at the generator outlet. What the process receives depends on the piping, valves and fittings in between.

Redundancy left to the end

If availability was never written down, maintenance becomes an unplanned shutdown. The configuration has to be decided before prices are compared.
Worked example. Three consumers drawing 4, 3 and 2 Nm³/h total 9 Nm³/h of capacity — but if all three peak together, the requirement is 9 Nm³/h simultaneously, plus margin. A system sized on a 3 Nm³/h average is short precisely when it matters.
Technical details

Reference specifications

Reference data for configuration review. The accepted quotation and approved technical specification define the supplied equipment.
Parameter Reference value Note
Technology
PEM water electrolysis
Deionised water feed; no liquid electrolyte inventory
Output range
0.5–200 Nm³/h
Across the system range; confirmed against your demand profile
Standard purity
99.999%
Confirm sampling point, treatment scope and impurity limits
Delivery pressure
By model
Delivered pressure defined at each consumer
Gas treatment
Separation, drying, purification
Scope follows your impurity limits
Control & monitoring
PLC + HMI
Pressure, flow, temperature; TCP/IP available depending on configuration
Configuration
Skid or container
Single train or multi-module
Process & integration

Redundancy follows from the availability target

Reference configurations. The class you need is set by what your process requires during maintenance, not by a default preference.
Configuration Behaviour during service Suits
Single train
Supply stops; maintenance planned into shutdowns
Intermittent processes with scheduled stoppages
N+1 modular
Production continues at reduced capacity
Continuous processes that can tolerate a temporary dip
N+2 modular
Full capacity maintained
Processes where any interruption is a production loss
High-capacity modular PEM electrolyzer system for plant-scale hydrogen production
Modular configurations are what make both phased expansion and a defined redundancy class possible without rebuilding the site.
Cost comparison

On-site generation vs delivered gas

Qualitative comparison. Break-even depends on consumption volume, duty cycle and local delivered-gas pricing — model it on your own figures rather than on a generic table.
Factor Delivered cylinders / bulk On-site generation
Cost behaviour as volume rises
Rises with volume and logistics
Largely fixed once installed
Supply risk
Delivery schedules, allocation, transport restrictions
Production on site, under your control
Gas quality consistency
Varies with batch and handling
Monitorable at the point of use
Stored gas on site
High-pressure storage throughout
Reduced — generated on demand
Scalability
Additional cylinders or a larger bulk tank
Additional modules
Operating labour
Changeovers, handling, compliance administration
Scheduled service and monitoring
Before you request a quote

What to have ready

  • Every consumer on the header, with peak draw for each
  • Which consumers can operate at the same time
  • Required gas quality at each delivery point
  • Required pressure and the tolerance the process accepts
  • Availability target and what happens during maintenance
  • Electrical supply, cooling and deionised water available
  • Footprint and whether the system sits indoors or in a container
  • Expansion plan, so shared equipment is sized once
Buyer questions

Questions before specification

How is an industrial hydrogen system sized?

On the concurrent peak demand of every consumer on the header, plus a design margin. Summing average consumption is the most common cause of pressure droop during critical process steps, because demand peaks from different consumers overlap in time.
At the delivery point. Oxygen and moisture enter through piping, valves and fittings, so a value measured at the generator outlet does not describe what the process receives. Specify the moisture and impurity limits at the battery limit of each consumer.
It follows from the availability target. N+1 allows one module to be serviced while production continues at reduced capacity. If full capacity is required at all times, N+2 is needed or maintenance must be scheduled into a planned shutdown.
On total cost of ownership over the operating period, covering electricity, feed water, consumables, service and stack replacement, compared against delivered gas including cylinder or bulk logistics, storage compliance and changeover labour. Unit gas price alone does not answer the question.
Yes, if the gas distribution, controls and utilities are specified for the final capacity from the start. Retrofitting those layers later is what makes expansion expensive.
Next step / configuration review

Send your demand profile

List the consumers on your hydrogen header, their peak draw and the gas quality required at each delivery point. Include the destination country and any procurement specification so the proposed scope can be reviewed against your project.
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