# Hydrogen storage and Salt

Their prices have moved together.

Source page: https://www.materialinsights.org/links/hydrogen-storage-and-salt/

[Hydrogen storage](https://www.materialinsights.org/energy/e_h2_storage/) (energy) and [Salt](https://www.materialinsights.org/commodities/salt/) (commodity): 1 relationship.

## How they are linked

### 1. Price link: cavern host

*Cost and price · Weak · Both ways*

Salt caverns are the cheapest way to store large volumes of hydrogen because salt is gas-tight. The salt index shows no link with the hydrogen proxy, with monthly moves at 0.00, since cavern cost depends on geology rather than salt prices.

- **-0.00** monthly change correlation
- **-0.12** 12-month change correlation
- **0.21** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.