reorganization

ERCOT makes major leadership changes, names COO

ERCOT has made four leadership changes. Photo courtesy of ERCOT

Last week, the Electric Reliability Council of Texas, or ERCOT, announced a reorganization amongst its leadership.

“These changes were designed to harness the collaborative talents and strengths of our experienced team in supporting the delivery of reliable and efficient energy to the millions of Texans that we serve,” Pablo Vegas, ERCOT President and CEO, says in a news release.

Effective September 1, four ERCOT leaders have new titles and positions.

Woody Rickerson has been named to the newly created position of senior vice president and COO of ERCOT. He previously served as vice president of system planning and weatherization. In his new role, he will maintain control over weatherization and planning while adding grid and commercial operations to his responsibilities.

“This new position will leverage Rickerson’s deep operations experience and support ERCOT’s continued investments in grid innovations,” adds Vegas.

Kristi Hobbs, who previously served as vice president of corporate strategy and public utility commission relations, will replace Rickerson as vice president of system planning and weatherization and will report directly to Rickerson. She will oversee transmission planning, generator interconnection activities, modeling, and weatherization in her new role.

ERCOT announced two other appointments:

  • Betty Day, vice president of security and compliance and chief compliance officer, has assumed oversight of business continuity.
  • Rebecca Zerwas will serve as director of state policy and public utility commission relations, board liaison.

“As our industry faces dynamic changes, ERCOT is continuously evolving and making the necessary improvements to the grid to support the needs of a growing population and robust economy," Vegas says. "This reorganization allows us to sharpen our focus on daily operations while implementing our long-term strategic plan."

Images via ERCOT.com

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A View From HETI

Houston researchers have uncovered why solid-state batteries break down and what could be done to slow the process. Photo via Getty Images.

A team of researchers from the University of Houston, Rice University and Brown University has uncovered new findings that could extend battery life and potentially change the electric vehicle landscape.

The team, led by Yan Yao, the Hugh Roy and Lillie Cranz Cullen Distinguished Professor of Electrical and Computer Engineering at UH, recently published its findings in the journal Nature Communications.

The work deployed a powerful, high-resolution imaging technique known as operando scanning electron microscopy to better understand why solid-state batteries break down and what could be done to slow the process.

“This research solves a long-standing mystery about why solid-state batteries sometimes fail,” Yao, corresponding author of the study, said in a news release. “This discovery allows solid-state batteries to operate under lower pressure, which can reduce the need for bulky external casing and improve overall safety.”

A solid-state battery replaces liquid electrolytes found in conventional lithium-ion cells with a solid separator, according to Car and Driver. They also boast faster recharging capabilities, better safety and higher energy density.

However, when it comes to EVs, solid-state batteries are not ideal since they require high external stack pressure to stay intact while operating.

Yao’s team learned that tiny empty spaces, or voids, form within the solid-state batteries and merge into a large gap, which causes them to fail. The team found that adding small amounts of alloying elements, like magnesium, can help close the voids and help the battery continue to function. The team captured it in real-time with high-resolution videos that showed what happens inside a battery while it’s working under a scanning electron microscope.

“By carefully adjusting the battery’s chemistry, we can significantly lower the pressure needed to keep it stable,” Lihong Zhao, the first author of this work, a former postdoctoral researcher in Yao’s lab and now an assistant professor of electrical and computer engineering at UH, said in the release. “This breakthrough brings solid-state batteries much closer to being ready for real-world EV applications.”

The team says it plans to build on the alloy concept and explore other metals that could improve battery performance in the future.

“It’s about making future energy storage more reliable for everyone,” Zhao added.

The research was supported by the U.S. Department of Energy’s Battery 500 Consortium under the Vehicle Technologies Program. Other contributors were Min Feng from Brown; Chaoshan Wu, Liqun Guo, Zhaoyang Chen, Samprash Risal and Zheng Fan from UH; and Qing Ai and Jun Lou from Rice.

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