Ørsted, which maintains offices in Houston and Austin, just flipped the switch on its 468-megawatt Mockingbird Solar Center in Lamar County, a project that also established a nearby nature preserve. Photo courtesy of Ørsted

The largest solar project in the global portfolio of Danish renewable energy company Ørsted is now supplying power to the Electric Reliability Council of Texas (ERCOT) grid.

Ørsted, which maintains offices in Houston and Austin, just flipped the switch on its 468-megawatt Mockingbird Solar Center in Lamar County, which is northeast of Dallas-Fort Worth and directly south of the Texas-Oklahoma border. The $500 million project can produce enough power for 80,000 homes and businesses.

ERCOT provides power to more than 25 million Texas customers, representing 90 percent of the state’s electric load.

In conjunction with the solar project, Ørsted donated 953 acres to The Nature Conservancy to establish the Smiley Meadow Preserve. This area, adjacent to the Mockingbird facility, protects a tallgrass prairie habitat featuring more than 400 species of grasses and wildflowers. Accounting for land already owned by the conservancy, Smiley Meadow exceeds 1,000 acres.

“Through the power of partnership, Ørsted has helped The Nature Conservancy protect an irreplaceable landscape that might otherwise have been lost to development,” Suzanne Scott, The Nature Conservancy’s Texas state director, says in a news release.

Mockingbird Solar Center is part of Ørsted’s $20 billion investment in U.S. energy generation. With this project now online, Ørsted owns a portfolio of more than six gigawatts of onshore wind, solar, and battery storage projects that either are operating or are being built.

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UH researchers develop breakthrough material to boost efficiency of sodium-ion batteries

future of batteries

A research lab at the University of Houston has developed a new type of material for sodium-ion batteries that could make them more efficient and boost their energy performance.

Led by Pieremanuele Canepa, Robert Welch assistant professor of electrical and computer engineering at UH, the Canepa Research Laboratory is working on a new material called sodium vanadium phosphate, which improves sodium-ion battery performance by increasing the energy density. Energy density is the amount of energy stored per kilogram, and the new material can do so by more than 15 percent. With a higher energy density of 458 watt-hours per kilogram — compared to the 396 watt-hours per kilogram in older sodium-ion batteries — this material brings sodium technology closer to competing with lithium-ion batteries, according to the researchers.

The Canepa Lab used theoretical expertise and computational methods to discover new materials and molecules to help advance clean energy technologies. The team at UH worked with the research groups headed by French researchers Christian Masquelier and Laurence Croguennec from the Laboratoire de Reáctivité et de Chimie des Solides, which is a CNRS laboratory part of the Université de Picardie Jules Verne, in Amiens France, and the Institut de Chimie de la Matière Condensée de Bordeaux, Université de Bordeaux, Bordeaux, France for the experimental work on the project.

The researchers then created a battery prototype using the new materia sodium vanadium phosphate, which demonstrated energy storage improvements. The material is part of a group called “Na superionic conductors” or NaSICONs, which is made to let sodium ions move in and out of the battery during charging and discharging.

“The continuous voltage change is a key feature,” Canepa says in a news release. “It means the battery can perform more efficiently without compromising the electrode stability. That’s a game-changer for sodium-ion technology.”

The synthesis method used to create sodium vanadium phosphate may be applied to other materials with similar chemistries, which could create new opportunities for advanced energy storage. A paper of this work was published in the journal Nature Materials.

"Our goal is to find clean, sustainable solutions for energy storage," Canepa adds. "This material shows that sodium-ion batteries can meet the high-energy demands of modern technology while being cost-effective and environmentally friendly."

Pieremanuele Canepa, Robert Welch assistant professor of electrical and computer engineering at UH, is leading a research project that can change the effectiveness of sodium-ion batteries. Photo courtesy of UH

Texas A&M awarded $1.3M federal grant to develop clean energy tech from electronic waste

seeing green

Texas A&M University in College Station has received a nearly $1.3 million federal grant for development of clean energy technology.

The university will use the $1,280,553 grant from the U.S. Department of Energy to develop a cost-effective, sustainable method for extracting rare earth elements from electronic waste.

Rare earth elements (REEs) are a set of 17 metallic elements.

“REEs are essential components of more than 200 products, especially high-tech consumer products, such as cellular telephones, computer hard drives, electric and hybrid vehicles, and flat-screen monitors and televisions,” according to the Eos news website.

REEs also are found in defense equipment and technology such as electronic displays, guidance systems, lasers, and radar and sonar systems, says Eos.

The grant awarded to Texas A&M was among $17 million in DOE grants given to 14 projects that seek to accelerate innovation in the critical materials sector. The federal Energy Act of 2020 defines a critical material — such as aluminum, cobalt, copper, lithium, magnesium, nickel, and platinum — as a substance that faces a high risk of supply chain disruption and “serves an essential function” in the energy sector.

“DOE is helping reduce the nation’s dependence on foreign supply chains through innovative solutions that will tap domestic sources of the critical materials needed for next-generation technologies,” says U.S. Energy Secretary Jennifer Granholm. “These investments — part of our industrial strategy — will keep America’s growing manufacturing industry competitive while delivering economic benefits to communities nationwide.”