Gas in Underground Storage This winter has been one of the coldest on record. It’s been the coldest winter in at least 30 years, and I saw a report today that there is a chance that this will be Chicago’s coldest winter on record. Presently it is the 3rd coldest on record for Chicago, but another blast of cold air is just moving into the Midwest and East Coast. Natural gas is a major energy source for heating homes, and prices have been spiking periodically in recent weeks as the weekly draws on natural gas inventories are higher than normal. Natural gas consumption in the US is highly seasonal, so producers use a system of underground pressurized storage that builds inventories until mid-fall, which are then depleted through the winter. Natural gas can be stored in depleted oil or gas reservoirs, in natural aquifers, or in salt caverns. The […]