Technical challenge
Demand may combine long low-load periods with tool, pump, lighting or charging peaks; transport and daily refill limits can be as important as electrical output.
Introduction
Mobile and Temporary Power Generation.
Bring electrical power to worksites, events, emergencies and infrastructure projects without installing permanent generation.
Temporary generation supplies a defined electrical requirement for a limited project or event, often at changing locations and under tight setup constraints.
A mobile system must be sized for transport, setup, peak load, runtime, weather, public access and the practical route for replenishing hydrogen.
The Challenge
Define the service problem before selecting technology.
Civil works, road and rail maintenance, emergency response, film, events and construction frequently require clean, quiet power away from convenient grid connections.
Business challenge
Reliability, utilisation, logistics, asset life and future demand must be translated into a commercial requirement that can be compared consistently across competing solutions.
Human challenge
The selected pathway must be understandable, maintainable and safe for the people operating it. Training, access, disruption, noise, local air quality and confidence in support can be as important as equipment performance.
The Goal
Turn the challenge into measurable project requirements.
The goal is to deliver the required service with a practical combination of efficiency, electrification, renewable energy, storage, hydrogen and operational controls—not to maximise any one technology.
Information to establish early
Record load peaks, daily kWh, operating hours, move frequency, site access, noise limits, weather exposure and fuel-delivery arrangements.
- Define the required output, operating pattern and acceptable interruption.
- Separate peak capacity from total daily or annual energy.
- Record present costs, constraints and service problems.
- Identify safety, consent, access and workforce requirements.
- Agree measurable performance, emissions and commercial outcomes.
Understanding the Technology
Follow the complete energy and hydrogen pathway.
A practical system may combine mobile hydrogen storage, a fuel-cell generator, battery buffering, inverter output, distribution equipment and remote monitoring.
01
Primary input
Identify the electricity, renewable resource, delivered fuel, water or existing process input and when it is available.
02
Hydrogen supply
Define production or delivery, hydrogen quality, pressure, usable kilograms, storage duration and replenishment.
03
Conversion and control
Select equipment around useful output, response, efficiency, operating hours, redundancy and integration with existing assets.
04
Final service
Measure the useful transport, electricity, heat or industrial service actually delivered to the user.
Important: equipment ratings describe only part of a solution. The system boundary must include energy supply, conversion losses, auxiliaries, storage, delivery and the operating reserve.
What are the Options?
Compare hydrogen with direct electrification and established alternatives.
Where hydrogen may fit
Fuel-cell generation may add value where quiet operation, local air quality, longer runtime or a transportable low-emissions fuel supply matters.
Where another pathway may be better
A grid connection, battery trailer or low-emissions combustion generator may be simpler for short jobs, low energy demand or sites with easy charging and fuel access.
Decision principle: compare complete systems against the same operating requirement, site conditions, safety obligations, emissions boundary and lifecycle period.
Typical Use Cases
Look first for demanding applications with a clear service value.
Civil works, road and rail maintenance, emergency response, film, events and construction frequently require clean, quiet power away from convenient grid connections.
Civil and infrastructure works
Road, rail, water and construction projects may need quiet temporary power before a permanent connection exists or where the local network cannot supply high-power equipment.
Events, film and motorsport
Short deployments combine public access, noise limits, variable peaks and tight setup windows. Mobile storage and generation must be planned as transportable site equipment.
Emergency and EV support
A mobile fuel-cell generator can support emergency loads or high-power vehicle charging where a grid connection is unavailable, damaged or temporarily constrained.
Solution Size
Size the service, energy pathway and reserve together.
Demand may combine long low-load periods with tool, pump, lighting or charging peaks; transport and daily refill limits can be as important as electrical output.
New Zealand now has a demonstrated 160 kW mobile hydrogen fuel-cell generator. Smaller projects may need only a few kilowatts, while vehicle charging, pumps and construction plant can move the requirement into tens or hundreds of kilowatts.
| Measure | Why it matters | Evidence to collect |
|---|---|---|
| Maximum output | Sets peak equipment and connection capacity. | Measured peaks, route demand, starting loads or process rate. |
| Useful energy | Determines fuel, storage and replenishment. | Hourly, daily, seasonal or route-level consumption. |
| Operating window | Shapes utilisation, recovery and maintenance. | Shifts, dwell time, event duration and annual hours. |
| Reserve and redundancy | Protects service through credible failures or delays. | Criticality, outage tolerance, alternative supply and resupply time. |
These measures structure an initial conversation; they are not a design or equipment recommendation.
Benefits and Limitations
Understand both the potential value and the hard constraints.
Potential benefits
Potential benefits include low point-of-use emissions, reduced noise, modular storage and electrical output suited to sensitive locations.
Limitations to resolve
Trailer mass, road compliance, site security, connections, setup time, refuelling logistics and utilisation between jobs affect feasibility.
Practical Considerations
Plan the site, supply chain and operating organisation.
Specify the refill point, transport pressure, usable kilograms, delivery schedule, coupling method and reserve needed to complete each operating period.
Site and access
Confirm space, access, foundations, ventilation, weather exposure, security, vehicle movements and future expansion.
Operations
Define trained roles, monitoring, inspections, planned maintenance, spare parts, alarms and emergency response.
Supply resilience
Test production or delivery capacity, hydrogen quality, refill intervals, route disruption, reserve and recovery after an event.
Safety
Use application-specific design, controls and competent advice.
Mobile equipment requires transport compliance, impact protection, controlled public access, ventilation, inspection and site-specific emergency procedures.
Hazard controls
Address loss of containment, ignition, ventilation, pressure, impact, electrical hazards, hazardous areas and emergency isolation.
People and procedures
Define competence, training, inspection, permits, signage, access control, incident response and communication with emergency services.
Site-specific compliance
Applicable requirements depend on quantities, pressure, equipment, location and activity. Separation distances and approvals cannot be selected from a generic web page.
Commercial Considerations
Compare the cost of delivering the required service.
Compare rental or ownership cost, transport, operator time, fuel, utilisation, avoided grid work and the value of lower noise and emissions.
Capital
Equipment, civil works, connection, storage, controls, consent, engineering and contingency.
Operating
Electricity, hydrogen, delivery, labour, maintenance, inspections, consumables and replacement parts.
Utilisation
Annual output, shared infrastructure, contracted demand and the effect of idle capacity on unit cost.
Value and risk
Avoided downtime, emissions, noise, constrained infrastructure, fuel volatility, residual value and technology maturity.
New Zealand Examples
Use verified local evidence and state project maturity clearly.
New Zealand hydrogen activity includes operational trials, demonstrations, commercial proposals and developing supply chains. Examples added to this page should identify what operated, where, for how long, the measured output and the source of the claim.
Demonstrated in New Zealand
Hyundai 160 kW Portable Generator
Hyundai New Zealand reports that its hydrogen Portable Generator System supplied power at the Ashley Forest Rallysprint for Hayden Paddon's electric rally car. The unit uses two NEXO fuel-cell systems and has a maximum output of 160 kW.
Read Hyundai's generator caseTechnology demonstration
New Zealand Defence Force collaboration
The New Zealand Defence Force reported a Defence Science and Technology collaboration with Hyundai NZ that showcased the portable hydrogen power-generation system and its electric-vehicle charging capability.
Read the NZDF reportApplication Evidence
What these examples establish
These are demonstrations rather than evidence of a mature rental fleet. They establish that high-power mobile fuel-cell generation has operated locally; fuel supply, utilisation, transport compliance and commercial availability still need project-specific confirmation.
Project Process
Progress from interest to an evidence-based proposal.
01
Discovery
Confirm the service problem, stakeholders, timing, present system and reasons for considering change.
02
Measure
Collect operating data, site constraints, supply information, safety requirements and commercial assumptions.
03
Compare
Screen credible pathways on the same system boundary and document exclusions, sensitivity and uncertainty.
04
Develop
Complete concept design, stakeholder engagement, approvals, procurement, implementation and performance verification.
Suitable Products
Build the system from compatible supply, storage and conversion components.
Product suitability depends on the measured requirement and complete system design. Review the current ranges as starting points rather than standalone recommendations.
Hydrogen supply and production
Review electrolyser and supply options around required quality, production rate and operating schedule.
Explore product rangesStorage and delivery
Match usable kilograms, pressure, refill route, transport and reserve to the operating requirement.
Explore storage productsFuel-cell power and integration
Coordinate continuous power, transient response, batteries, inverters, controls and monitoring.
Explore power systemsFAQ
Common early questions.
Is hydrogen automatically the best low-emissions option?
No. A grid connection, battery trailer or low-emissions combustion generator may be simpler for short jobs, low energy demand or sites with easy charging and fuel access. The correct comparison uses the same final service, site conditions, reliability and lifecycle boundary.
What information is needed before selecting equipment?
Record load peaks, daily kWh, operating hours, move frequency, site access, noise limits, weather exposure and fuel-delivery arrangements.
Where can hydrogen add value?
Fuel-cell generation may add value where quiet operation, local air quality, longer runtime or a transportable low-emissions fuel supply matters.
What usually has the greatest effect on project cost?
Compare rental or ownership cost, transport, operator time, fuel, utilisation, avoided grid work and the value of lower noise and emissions.
Can this page be used to determine safety distances?
No. Required controls and separation distances depend on the actual inventory, pressure, equipment, activity and site. Use current requirements and appropriately competent project specialists.
Scope and Limitations
Use this page for orientation, not final design or professional advice.
This material is general information for early customer and project conversations. It does not replace engineering, financial, legal, safety, environmental or regulatory advice. Technology performance, prices, hydrogen availability, standards and legal requirements change; verify current information for the actual New Zealand site and proposed activity.
Further Reading
Continue with authoritative and current information.
Project Support
Define the requirement before selecting equipment.
Share the operating requirement, location, timing and constraints so the next questions and evidence can be identified.