tapping into tech

Houston company names new tech partner on projects aimed at increasing grid reliability

Grid United announced a new partnership with Hitachi Energy that it's entered into a collaboration to work on high-voltage direct current technology for Grid United transmission projects. Photo via hitachienergy.com

A Houston company has tapped a new tech partner to work on projects that are expected to help boost transmission capacity across the U.S. amidst increased, continued demands for energy.

Houston-based electrical transmission developer Grid United and Hitachi Energy announced at CERAWeek that it's entered into a collaboration to work on high-voltage direct current technology for Grid United transmission projects. These projects will aim to interconnect the eastern and western regional power grids in the U.S. The Eastern Interconnection east of the Rocky Mountains, the Western Interconnection west of the Rockies and the Texas Interconnection run by the Electric Reliability Council of Texas, make up the three main power grids.

This technology and these projects play a key role in the U.S. government’s commitment to accelerating the energy transition, which includes the priorities of the U.S. Department of Energy. The collaboration is considered a capacity reservation agreement in which Hitachi Energy will provide HVDC technology to support the development of multiple Grid United HVDC interconnections. The interconnections aim to mitigate the impact of extreme events and accommodate demands for electricity.

“With industry leading HVDC technology and a global track record, Hitachi Energy is a needed collaborator for the development of a more resilient and reliable electric power grid,” Michael Skelly, CEO and co-founder of Grid United, says in a news release. “By working with companies like Hitachi Energy and partnering with incumbent utilities, we’re confident we can quicken the pace of modernizing and strengthening the U.S. electric grid to meet rapidly increasing electricity demand.”

The multi-contract framework is one of the first of new business models, which allows Hitachi Energy to plan in “advance to increase manufacturing capacity, expand and train the workforce, and maximize standardization to increase efficiency between successive projects” according to a news release.

We are proud to collaborate with Grid United to strengthen the U.S. power grid, making it more flexible, reliable, and secure,” Managing Director of Grid Integration Business Niklas Persson says in a news release. “By applying our innovative new business model which enables speed and scale in the supply chain, we are confident we can make important contributions to streamlining the development process to help accelerate the energy transition.”

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A View From HETI

A rendering of a Quaise Energy geothermal plant. Rendering via quaise.com

Houston-based Quaise Energy, a producer of utility-scale geothermal power, raised $134 million in a Series B round to advance its “superhot” geothermal power plant.

Climate-focused San Francisco-based investment firm Prelude Ventures led the round, with participation from JERA Co., Japan’s largest power generation company, and Idemitsu Kosan, one of Japan’s largest energy companies. Nearly all existing investors, including cleantech-focused investment firm Safar Partners, participated in the round.

“We have backed Quaise since the beginning because we believed accessing superhot rock would unlock geothermal energy at a scale the world has never seen,” Mark Cupta, managing director at Prelude Ventures, said in a press release.

The startup expects more equity and debt deals to close “imminently.” Quaise has raised $230 million since its founding in 2018.

Quaise says some of the fresh funding will go toward building the world’s first commercial-scale “superhot” geothermal power plant —Project Obsidian in central Oregon. In addition, Quaise is earmarking money for continued development and commercialization of its millimeter-wave drilling system toward depths exceeding 5 kilometers (about 16,400 feet).

Quaise uses a millimeter-wave drilling system developed at the Massachusetts Institute of Technology to remove rock at depths and temperatures that aren’t economically feasible with conventional drilling. With this technology, Quaise can reach rock at temperatures of around 570 degrees to 930 degrees in most places worldwide, enabling construction of geothermal systems that rival fossil fuels and nuclear energy in power density and that rival renewables in cost.

“Our ambition is to power civilization with Earth's most compelling energy source. This round takes us from field-proven technology to first commercial revenues,” Carlos Araque, co-founder, president and CEO of Quaise, added in the release.

Quaise has demonstrated the capability of its millimeter-wave drilling system at its Central Texas test site, drilling more than about 330 feet through granite in 2025—the first time the technology penetrated basement rock at full scale in the field. The company is approaching a depth of about 3,300 feet at the same site.

Construction of Project Obsidian is underway at Oregon’s Deschutes National Forest. The project, which has the potential to generate gigawatt-scale power, is slated to deliver electricity to the Pacific Northwest grid by 2030.

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