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

Founded in 2016, Fullstream Energy is a growth-oriented midstream services company with offices in San Antonio, TX, Pittsburgh, PA, and Tulsa, OK. www.fullstreameh.com
Fullstream Energy is primarily funded through equity commitments from EIV Capital. www.eivcapital.com
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

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. www.howardenergypartners.com
Investment year: 2017
Sandpiper Storage
Founded in 2018, Sandpiper storage is developing contracted, sand storage in the Permian to provide operators and miners with mid-mile, strategic storage solutions. www.sandpiperstorage.com
Investment year: 2018
