History

Built on Experience. 
Positioned for Growth.

For more than three decades, we have expanded our operations, strengthened our capabilities, and built a diversified portfolio of natural gas storage and pipeline assets. Through strategic growth, we have positioned the company to serve evolving energy markets and support growing demand across the United States and around the world.

1995

1995

PacifiCorp Power Marketing Inc. begins marketing energy-related products and services across North America. This business ultimately evolves into Enstor Gas.

2001

2001

Enstor Inc is created.

2002

2002

Enstor acquires the Katy Gas Storage and Transportation Hub, establishing a foundational operating asset in a strategic location on the U.S. natural gas grid.

2005

2005

Acquisition of the Grama Ridge Storage and Transportation facility in New Mexico, one of the few natural gas storage fields in the Permian Basin.

2007

2007

Enstor acquires the Freebird storage facility in Alabama, expanding its presence in the Southeast.

2008

2008

Acquisition of the Caledonia Energy Partners facility in Mississippi further strengthens Enstor’s Gulf Coast footprint.

2018

2018

AVANGrid completes sale of Enstor Gas to ArcLight Capital Partners.

2019

2019

Enstor expands its storage portfolio with the acquisition of two cavern storage facilities: Mississippi Hub and Bay Gas Storage.

2021

2021

Enstor closes sale of Waha Gas Storage assets to WhiteWater Midstream.

2022

2022

A perpetual life infrastructure investment vehicle acquires Enstor from ArcLight Capital Partners, positioning the company for its next phase of growth.

2025

2025

Enstor acquires Black Bear Transmission, significantly expanding its downstream capabilities with a large-scale pipeline network across the Southeastern U.S.

The company also initiates the expansion of its Mississippi Hub storage facility, reinforcing its commitment to meeting growing market demand.