# Compressed-air and CO2 storage and Salt

Their prices have moved together.

Source page: https://www.materialinsights.org/links/compressed-air-and-co2-storage-and-salt/

[Compressed-air and CO2 storage](https://www.materialinsights.org/energy/e_caes/) (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*

The cheapest storage uses caverns dissolved out of underground salt layers by solution mining, which also produces brine. The salt index shows little relation to the compressor proxy, with monthly moves at 0.07.

- **0.07** monthly change correlation
- **-0.20** 12-month change correlation
- **1.72** fitted elasticity

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