Caledonia Energy Partners is a FERC-certified high-deliverability, multicycle natural gas storage facility located in Lowndes County in Mississippi and is connected to Tennessee Gas Pipeline's 500 Leg in Zone 1. Tennessee shippers and TGP 500 Pool traders can access Caledonia through segmentation and pooling service on Tennessee. Caledonia customers include utilities, power generators, pipelines, gas marketing firms and trading firms.

Services offered at Caledonia include firm storage and park and loans. All services at Caledonia are offered at market-based rates. Caledonia often tailors commercial terms to suit customers' individual needs.