Steelhead helped us expand our station capacity 3x with no space increase.

– Director, CleanFuel Hydrogen

Next-Generation Ground Gas Storage: High-Pressure Composite Vessels for Hydrogen, CNG, and Industrial Applications

Steelhead Composites ground storage vessels represent a breakthrough in stationary high-pressure storage. These advanced composite tanks are lighter, easier to install, and deliver more usable volume per footprint than traditional steel tanks.

With pressure ratings up to 500 bar and modular deployment options, they are ideally suited for renewable hydrogen hubs, CNG refueling stations, and industrial buffering. Minimize infrastructure, maximize energy.

Steelhead Composites HydrogenCube Plus 10-foot container, designed for modular hydrogen storage and transport with integrated ventilation and secure enclosure.

Photo: HydrogenCube Plus 10'—a compact, containerized high-pressure gas storage system engineered for scalable hydrogen deployment in mobile or fixed-site applications.

Containerized Gas Storage and Transportation System - Lightweight Multiple-Element Gaseous Containers (MEGCs)

Permanently mounted to high-strength steel frameworks, these mobile-friendly units feature:

  • Quick-connect filling and discharge receptacles (custom connections available)
  • Pressure line isolation valves
  • Thermally activated pressure relief devices (TPRDs)

Available Models:

  • Gas Storage 10' – 3 meters in length (10 feet)
  • Gas Storage 20' – 6.1 meters in length (20 feet)
  • Gas Storage 40' – 12.2 meters in length (40 feet)

The container and all internal components are engineered for corrosion resistance in highly demanding environments.

Uses and Applications
Close-up of composite pressure vessels with visible valve ports, representing safe and efficient gas storage solutions for medical gases, CNG refueling stations, and laboratory environments.

CNG Infrastructure – Tank Farms

Perfect for CNG refueling stations or controlled lab environments, they provide safe and efficient storage of compressed gases.

Vertical high-pressure composite gas vessels arranged in a rack system for stationary hydrogen energy storage at renewable energy or electrolyzer sites.

Hydrogen – Stationary Energy Storage

Ideal for renewable hydrogen hubs and electrolyzer sites, these tanks offer reliable high-pressure storage with a compact footprint.

HydrogenCube Plus 20' container at a research facility, connected to piping and instrumentation, illustrating its use as buffer storage for steady-pressure hydrogen supply in lab and pilot-scale operations.

Utility Scale Buffer Storage

Used as buffer storage for high-performance compressors, they ensure steady pressure and uninterrupted lab or pilot operations.

Top-down view of HydrogenCube storage module revealing rows of composite pressure vessels and stainless steel gas manifolds inside a containerized frame.

Specifications for Containerized Gas Storage & Transport Systems

  • Gas Type: Hydrogen, CNG, RNG, Nitrogen, Helium
  • Applications: Stationary Storage, Buffering, Back up, Tank Farm
  • Industries Served: Energy, Utilities, Industrial Gas, Start Up Facilities, Research
  • Pressure Rating: Up to 500 bar
  • Size/Volume: Custom to your needs
  • Safety Features: Passive or Forced
  • Configurations: Custom skids and bank configurations available
  • Burst pressure: >2.25x operating pressure
345 Bar SeriesCapacity, kgLength, mWidth, mHeight, mFull Mass, kg
Gas Storage 10'18632.42.97,592
Gas Storage 20'3726.12.42.914,784
Gas Storage 40'74412.22.42.928,232


 

Containerized MEGC Gas Storage System - Active Rendering

Build your next storage system with smarter pressure vessels. 

Steelhead Composites ground storage solutions are engineered for performance, safety, and efficiency—whether you're storing hydrogen, CNG, nitrogen, or helium. From renewable energy hubs to industrial backup systems, we help you minimize infrastructure and maximize capability.

Contact us to talk with our team.

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Large hydrogen storage system with 1000 kg capacity designed for utility-scale buffering in power generation applications.

Steelhead’s 1000 kg hydrogen storage vessel delivers utility-scale energy buffering for power plant conversions and renewable integration.

Close-up of 18 kg hydrogen storage tank with custom steel frame and strap mounting system for secure ground installation.
Large hydrogen storage system with 1000 kg capacity designed for utility-scale buffering in power generation applications.
Multiple-element gas container (MEGC) with low-pressure Type 1 cylinders used for hydrogen storage prior to compression.
High-pressure gas plumbing and tubing with visible hydrogen safety sensors, pressure relief devices, and regulation valves.
Composite overwrapped hydrogen pressure vessels (COPVs) arranged for installation in an ISO container, showing dome and neck mounts.
Partially filled hydrogen storage container showing modular layout for gas vessels and equipment space optimization.
Small-scale hydrogen storage solution using strap-mounted Type 3 composite pressure vessels, ideal for electrolyzer off-gas collection.
Hydrogen wall container system holding 36 kg of hydrogen in vertically arranged, dome-mounted pressure vessels.
Detail of stainless steel valves and tubing on a HydrogenCube system, showing precision gas flow control for hydrogen storage and distribution.
Top-down view of HydrogenCube storage module revealing rows of composite pressure vessels and stainless steel gas manifolds inside a containerized frame.
Close-up of a digital pressure gauge reading 5,825 psi on a HydrogenCube system, with stainless steel fittings and high-pressure valves in the foreground.