Hydrogen Energy Storage

Our H2 FlexiStore underground hydrogen storage technology uses the geology of the earth to safely store large volumes of green hydrogen. Purpose-built shafts can be built wherever required to offer long-term storage close to the point of demand.

Storing hydrogen in underground shafts is intrinsically safer and less obtrusive than above-ground options and, unlike salt caverns, is not restricted to deployment in areas with particular geologies.

Key features:

Safe

Storing hydrogen underground reduces the risk of leaks and protects storage container from damage

flexibile capacity

We can store up to 100 tonnes of compressed hydrogen per shaft, with option to have multiple shafts on one site

Lower costs

Surrounding geology helps contain pressure and reduces storage costs

Location flexibility

No need for specific geological conditions, can store hydrogen where it is needed

Gravitricity’s H2 FlexiStore technology is ideally placed to meet the growing demand for green hydrogen in the following use cases:  

Existing uses. Hydrogen production by electrolysis will replace existing carbon emitting production techniques for applications such as ammonia and methanol production.

High grade heat. Hydrogen is the only low carbon way of reaching temperatures needed in numerous industrial processes, including steel making.

Grid scale energy storage. Electrolysis of water can generate hydrogen from otherwise curtailed renewable generation, providing GW scale storage for daily peaks, long duration and inter-seasonal requirements.

Shipping and aviation. The growing requirements of shipping and aviation will drive the growth of green hydrogen production and the need for storage facilities at ports and airports.