South Texas Energy Partners ("STEP") is an energy-focused private equity firm based in San Antonio, TX.  STEP invests across the energy value chain. 

Current investments:

First GroundRock Royalties

Founded in 2016, First GroundRock Royalties is a mineral and royalty acquisition company focused on the major basins of the US.

Investment year: 2016

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Founded in 2016, Fullstream Energy is a growth-oriented midstream services company with offices in San Antonio, TX, Pittsburgh, PA, and Tulsa, OK.

Fullstream Energy is primarily funded through equity commitments from EIV Capital.

Investment year: 2018

Green Branch Field

Acquired in 2018, STEP jointly acquired interests in the Green Branch field in McMullen and La Salle counties with its partners.

Investment year: 2018

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Howard Energy Partners provides natural gas gathering and processing services, liquids transportation and processing services, and terminalling, storage and rail services in Texas and Pennsylvania.

Investment year: 2017