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US Air Force awards Houston geothermal co. $1.9M grant project

Houston startup Sage Geosystems has announced a new $1.9 million deal with the Air Force. Photo via sagegeosystems.com

The Department of the Air Force awarded Houston geothermal company Sage Geosystems Inc. a grant of $1.9 million in a first-of-its kind contract to determine whether a power plant using Geopressured Geothermal Systems is able to generate clean energy “needed for a base to achieve energy resilience,” according to a news release. The Sage facility will be the first GGS facility in the world to generate electricity, and the system will be constructed at an off-site test well in Starr County, Texas.

”We are excited to partner with the U.S. Air Force on this geothermal demonstration project,” CEO of Sage Geosystems Cindy Taff says in a news release. “Next generation geothermal technologies, like Sage Geosystems’ GGS, will be critical in providing energy resiliency at U.S. military installations.”

In addition to the grant, the company will match the grant with an additional $1.9 million for the demonstration project. The collaboration with Sage is one of three geothermal pilot projects the DAF has initiated in regards to next-generation geothermal technologies in 2024.

“We feel this is the launch pad of helping not only the DoD but many other applications throughout global markets,” 147th Civil Engineer Squadron Commander Lt Col Christian Campbell says in the release.

According to the DAF, the possibility of a full-scale project at Ellington Field Joint Air Reserve Base in Houston could usher in a new era of clean power producing plants to help meet the requirements for bases.

“This initial contract is a step forward in the Air Force’s push for energy resilience,” Kirk Phillips, director of the Air Force Office of Energy Assurance, adds in the release. “This project will improve Ellington Field’s ability to maintain operations during electrical grid outages and be completely self-sufficient for their energy needs.”

The GGS process works by repurposing fracking technology to extract thermal energy from below the Earth’s surface.GGS also demonstrates the opportunity for the civilian sector by surpassing the intermittency challenges for solar and wind energy generation. GSS can also work towards minimizing land use, which enables the technology to be used in urban areas without relying on transmission line build outs that can be expensive.

“This project, and the future Department of the Air Force projects that it paves the way for, will help to assure that our national security needs are met by our installations during critical emergencies,” Phillips continues.

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A View From HETI

Enbridge Inc. is now generating 130 megawatts of energy from its Orange Grove solar project near Corpus Christi. Photo courtesy Enbridge

Canadian energy company Enbridge Inc., whose gas transmission and midstream operations are based in Houston, has flipped the switch on its first solar power project in Texas.

The Orange Grove project, about 45 miles west of Corpus Christi, is now generating 130 megawatts of energy that feeds into the grid operated by the Electric Reliability Council of Texas (ERCOT). ERCOT supplies electricity to 90 percent of the state.

Orange Grove features 300,000 solar panels installed on more than 920 acres in Jim Wells County. Construction began in 2024.

Telecom giant AT&T has signed a long-term power purchase agreement with Enbridge to buy energy from Orange Grove at a fixed price. Rather than physically acquiring this power, though, AT&T will receive renewable energy certificates. One renewable energy certificate represents the consumption of one megawatt of grid power from renewable energy sources such as solar and wind.

“Orange Grove is a key part of our commitment to develop, construct, and operate onshore renewable projects across North America,” Matthew Akman, executive vice president of corporate strategy and president of renewable power at Enbridge, said in 2024.

Orange Grove isn’t Enbridge’s only Texas project. Enbridge owns the 110-megawatt Keechi wind farm in Jacksboro, about 60 miles northwest of Fort Worth, and the 249.1-megawatt Chapman Ranch wind farm near Corpus Christi, along with a majority stake in the 203.3-megatt Magic Valley I wind farm near Harlingen. The company’s 815-megawatt Sequoia solar project, east of Abilene, is scheduled to go online in early 2026. Enbridge has signed long-term power purchase agreements with AT&T and Toyota North America for energy produced by Sequoia.

During a recent earnings call, Enbridge President and CEO Greg Ebel said that given the “unprecedented demand for power generation across North America,” driven largely by explosive growth in the data center sector, the company expects to unveil more renewable energy projects.

“The policy landscape for renewables is dynamic,” Ebel said, “but we think we are well-positioned with our portfolio of late-stage (projects).”

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