HydrogenCube™ Module Storage Systems

Gas Storage Bundles

Features

No downtime

Empty units are easily swapped with full units

Compatible

Use with any fuel cell, compressor, or electrolyzer

Cost-efficient

Much lighter and less expensive than batteries for equal energy storage

Reliable

Enables plug-and-play fuel cells for remote and/or off-grid locations

Compact

Easily loaded or unloaded using standard trucks

Safe

Fully plumbed drop & swap solution

Steelhead Composites Gas Storage Bundles offer safe, cost-effective, lightweight, and portable compressed industrial gasses storage system. Once empty, the system is easily swapped for a full unit and transported for refill at the closest station.

A Single Gas Storage Bundle will:

Recharge a small fleet of vehicles
Store enough energy to power a small home for a month
Provide backup power for life support systems

Durability and Reliability

These pressure vessels are designed, developed, and tested in-house — offering a design optimized for:

Target cycle life — 30+ years useful life
Lightweight — Roughly 1/4 to 1/5 the weight of traditional steel tanks
Safe — Predictable leak-before-burst failure mode
Corrosion-Resistant Materials:
- Stainless Steel head
- Aluminum (Type III) or Polymeric (Type IV) liner
- Carbon fiber shell
- Additional UV and marine-compatible coatings are available
Proven superiority against drop and impact damage
Minimal permeation of compressed gas at its maximum operating pressure
Wide operating temperature range — from -40°C to 85°C (-40°F to 185°F)

Model	Capacity	Operating Pressure
Gas Storage Bundle	Up to 56 kg	345 Bar (5,000 psi)

For larger volumes of gas storage, see our Containerized Gas Storage Systems.

HydrogenCube 1x3 Horizontal Bundle for compressed hydrogen gas storage

Bundle Replacement Model

(Using hydrogen gas as an example)

Distributed grid model — own the cubes and fuel cell, bill customers at a per kWh rate for electricity used
Bundle replacement model — own the cubes, customer buys fuel cell, bill customer per kg of hydrogen used
Customer owned model — customer owns cubes and fuel cell, swap cubes with filled cubes when empty at fixed cost

Gas Storage Bundle 2x2 Horizontal on a flatbed truck

Certifications

Pressure Vessels:

US DOT (per UN/ISO 11119-2)
CE-PED – Module B and D
DNV Technology Certificate

Gas Storage Bundle:

US-DOT-SP (Pending)
ASME (Pending)

Need a Custom Solution? Get a Quote Today!

At Steelhead Composites, we specialize in high-performance lightweight composite pressure vessels and customized energy storage solutions. Whether you need a standard product or a tailored solution, our team is ready to assist.