Subsidiaries and Spin-Offs

Our Portfolio Companies

GTI International, Inc. (GTII) is a holding company and wholly owned subsidiary of GTI. Through GTII, GTI is investing in an efficient, clean energy future to meet ever-escalating energy, operational, and environmental challenges.

We combine capital, technical expertise, infrastructure, and access to GTI’s global network of partners and customers, advanced laboratories, unrivaled training, and resources to help companies expand and grow.

SunGas Renewables (SGR), Inc. was established in 2019 as a wholly-owned subsidiary of GTI International that deploys large-scale proven commercial technologies to optimize production of renewable natural gas (RNG), hydrogen, and liquid transportation biofuels from wood waste. SunGas gasification systems are based on pressurized fluidized bed technology originally developed by GTI, which has been deployed commercially around the globe. The systems produce a clean, tar-free syngas, which is critical for the effective and successful production of renewable low-carbon products.

Frontier Energy, Inc. is a professional consulting firm that specializes in energy efficiency and advanced energy solutions for residential and commercial buildings, food service, transportation, and next generation grid. With a fuel-agnostic perspective, they work on projects involving electricity, natural gas, hydrogen, and renewables to design, implement, and evaluate programs that help clients achieve their goals. Frontier Energy was launched on January 1, 2017, as a wholly-owned subsidiary of GTI International, Inc. (GTII).

Backed by the strong reputation of its predecessor companies as well as the technical expertise and partner network of ultimate parent company GTI, Frontier Energy leverages decades of energy efficiency experience to deliver services, programs, and tools that encourage the intelligent use of energy to preserve resources for current and future generations.

Frontier Energy acquired Energy Insight, a Minnesota-based professional services firm that provides energy efficiency program management and engineering services, in September 2019. Energy Insight helps their customers identify tangible action steps and practical upgrades that save energy. The team designs, administers, and implements utility energy conservation programs that empower a utility’s customers to reduce energy usage and lower demand. They also work directly with commercial/industrial, agricultural, and institutional customers that want to make energy-efficiency improvements, access conservation rebates and incentives, or simply understand and better manage the way they use energy.


LocusView Solutions (LVS) was launched as a Chicago start-up in 2014 by GTI International (GTII). The company has intimate knowledge of the industry’s unique engineering, operational, and regulatory compliance needs and brings advanced commercial-scale mobile geospatial products and services to natural gas operators, leveraging technology developed with industry support.

In April 2018, LVS was sold to NortecView, Ltd., a software company that develops innovative cross-platform mobile, IoT, and web solutions for utility companies. The long-standing partner developed the mobile application platform currently utilized by LocusView. Together, the team will be well positioned to accelerate the pace of product development and rapidly scale deployment of the technology throughout the U.S.

In 2013, GTI helped launch a consulting firm, Enovation Partners, focused exclusively on serving the energy and infrastructure sectors. GTI supports Enovation Partners with technical knowledge and experience as it helps U.S. and multinational clients develop high-impact strategies, evaluate new technologies, assess the regulatory landscape, and navigate the business environment of a rapidly changing market.

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