M&A moves

Houston private equity firm acquires German magnetic materials producer

In M&A news, a decarbonization-focused firm has acquired only producer in the Western Hemisphere of electric-vehicle-grade permanent magnets. Photo via arapartners.com

Houston-based private equity firm Ara Partners has purchased Germany’s Vacuumschmelze (VAC), a producer of magnetic materials for products such as electric vehicles, from funds overseen by asset manager Apollo. The purchase price wasn’t disclosed.

VAC is the only producer in the Western Hemisphere of electric-vehicle-grade permanent magnets. It also makes magnetic materials for the industrial, aerospace, medical, and renewable energy sectors.

Earlier this year, VAC announced a deal with automotive giant General Motors to build a North American factory for the production of magnets for the electric motors of GM-made EVs. The factory, set to open in 2025, will initially product enough magnets to supply 1 million EVs each year. The magnets will be made of alloys of rare-earth elements.

GM forecasts it will manufacture 1 million EVs per year in North America by 2025.

“We believe the demand for VAC’s differentiated, customized products will continue to grow rapidly as companies around the world decarbonize their industrial processes and the electrification of mobility advances, and we look forward to leveraging our expertise to further enable VAC’s continued success,” Tuan Tran, a partner at Ara Partners, says in a news release.

Ara Partners specializes in investments in the decarbonization sector.

Founded in 1923, VAC was owned by technology conglomerate Siemens for more than 65 years. Ohio’s OM Group acquired VAC in 2011. Four years later, Apollo purchased OM Group for more than $1 billion, putting VAC in the hands of the asset manager.

As of June 30, Ara Partners had about $4.4 billion in assets under management, while Apollo had $617 billion in assets under management.

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A View From HETI

Sage Geosystems has selected a site for its next major geothermal facility. Photo via sagegeosystems.com

Sage Geosystems, a Houston-based developer of geothermal power systems, has chosen a site in Nevada for its commercial-scale Project Vector facility.

The company’s two-well enhanced geothermal system (EGS) will deliver around-the-clock geothermal heat to Ormat Technologies’ Blue Mountain geothermal power plant in Winnemucca, Nevada.

The startup expects to begin drilling the first well later this year, with the first electricity to be generated in 2027 and full-scale production to start in 2028.

In the Nevada system, fluid will circulate through an engineered subsurface reservoir, absorb heat from the surrounding rock and return heat to the surface. The heat will be delivered to the Blue Mountain plant for conversion into electricity.

Project Vector builds on the performance of Sage’s SMECI facility in South Texas. That facility’s results, combined with Sage’s digital twin platform, will be used to shape to the design and development of Project Vector.

Project Vector supports Sage’s growing commercial pipeline, including a 150-megawatt geothermal power agreement with Meta Platforms, the parent company of Facebook and Instagram.

“Blue Mountain is an ideal location for Sage to take the next step in continuing to commercialize our proprietary EGS approach,” Jason Peart, chief operating officer at Sage, said in a release. “By delivering geothermal heat into an existing power plant, Project Vector can demonstrate the model for bringing firm, 24/7 geothermal power to market at scale.”

Project Vector extends Sage’s relationship with Ormat.

In August 2025, Sage and Ormat agreed to accelerate commercialization of Sage’s geothermal technology at an Ormat power plant. This January, Ormat co-led Sage’s $97 million Series B funding round.

Sage, founded in 2020, has raised about $159 million across three funding rounds.

As the startup ramps up its ESG platform, Sage is targeting data centers as customers, among other large-scale users of electricity.

“The energy needs are huge, and they need it now,” CEO Cindy Taff said on Data Center Frontiers’ podcast. “They can’t depend on the grid anymore.”

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