Rice University engineers have created a device that absorbs light, converts it into electricity, and then uses the electricity to split water molecules and generate hydrogen. Photo courtesy Gustavo Raskoksy/Rice University

A team of Rice University engineers have developed a scalable photoelectrochemical cell that converts sunlight into clean hydrogen at a record-setting pace.

The lab led by Aditya Mohite, an associate professor at Rice, published the findings in a study in Nature Communications late last month, in collaboration with the National Renewable Energy Laboratory, which is backed by the Department of Energy. In it, the team details how they created a device that absorbs light, converts it into electricity, and then uses the electricity to split water molecules and generate hydrogen.

Austin Fehr, a chemical and biomolecular engineering doctoral student at Rice and one of the study’s lead authors, says in a statement that the device "could open up the hydrogen economy and change the way humans make things from fossil fuel to solar fuel."

The device has a high solar-to-hydrogen conversion efficiency rate of 20.8 percent, which has yet to be reached with this type of technology, according to a release from Rice. In addition to its speed, this device is groundbreaking because it uses low-cost metal-halide perovskite semiconductors to power the reaction.

A photoreactor developed by Rice University’s Mohite research group and collaborators achieved a 20.8 percent solar-to-hydrogen conversion efficiency. Photo courtesy Gustavo Raskoksy/Rice University

“Using sunlight as an energy source to manufacture chemicals is one of the largest hurdles to a clean energy economy,” Fehr says in the statement. “Our goal is to build economically feasible platforms that can generate solar-derived fuels. Here, we designed a system that absorbs light and completes electrochemical water-splitting chemistry on its surface.”

To create the device the Mohite lab turned their existing solar cell into a reactor to split water into oxygen and hydrogen. However they continued running into issues with the semiconductors being "extremely unstable in water," according to Rice.

After two years of trials and errors, the team uncovered that by adding two layers of barriers to the semiconductors they were able to reach these record-breaking efficiency rates.

The team has also shown uses for their double barrier design with different semiconductors and for different reactions.

“We hope that such systems will serve as a platform for driving a wide range of electrons to fuel-forming reactions using abundant feedstocks with only sunlight as the energy input,” Mohite says in the statement.

The device joins another game-changing product shared in a Rice research study in recent weeks. Last month, a Rice University lab led by Haotian Wang, the William Marsh Rice Trustee Chair and an associate professor at Rice, shared their findings on how their simple plug-and-play device removes carbon dioxide from air capture to induce a water-and-oxygen-based electrochemical reaction.

Rice also recently opened registration for its 20th anniversary of Energy Tech Venture Day. Click here to register for the event on Sept. 21.

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San Antonio company breaks ground on 347MW solar project outside of Houston

coming soon

Crews have broken ground on the forthcoming 347-megawatt direct-current SunRoper Solar project in Wharton County, Texas, that will add capacity to the ERCOT grid.

The solar project, which is slated to begin operations in December 2027, will provide electricity to an undisclosed Fortune 100 company under a long-term power purchase agreement, according to a news release.

San Antonio’s OCI Energy and Israel's Arava Power are developing the project. It's being financed by ING Capital and constructed by Louisiana-based WHC Inc. The project received $394 million in construction financing in February.

"SunRoper demonstrates how strategic partnerships can help meet Texas' growing demand for electricity through investments in critical energy infrastructure," Sabah Bayatli, president of OCI Energy, said in the release.

Project partners, landowners and company executives attended a groundbreaking event for SunRoper on Sept. 1 at the site outside of the Houston metro area. The companies say they are advancing this energy project to strengthen grid reliability and to help deliver affordable power to one of the highest-demand areas in the state.

“WHC is proud to serve as EPC contractor on the SunRoper Solar project, bringing our construction expertise to bear on a facility that will deliver meaningful power to the Houston region,” Randel Badeaux, president of power North America for WHC, added in the news release. “This groundbreaking reflects months of careful planning and coordination with OCI Energy, Arava Power and our project partners, and we look forward to executing a safe, high-quality build through to completion in 2027.”

OCI Energy currently operates several utility-scale solar and battery energy storage system projects outside of the San Antonio area, and has five other projects under construction outside of San Antonio and Waco, with more than 30 under development in Arkansas, Mississippi, Georgia, Colorado and Alberta, Canada. The company also has existing projects in New Jersey and Georgia.

In $2 billion deal, NVIDIA takes 20% stake in Woodlands-based Lancium

power play

With an initial investment of $2 billion, AI chip manufacturer NVIDIA just acquired a 20 percent stake in The Woodlands-based Lancium, which develops large-scale campuses that combine AI data centers and onsite power supplies.

Lancium recently announced the investment but didn’t disclose the dollar amount. The Information news website reported NVIDIA’s investment totaled $2 billion, with the possibility of an additional $1 billion if Lancium achieves certain milestones.

Dealroom.co calls NVIDIA’s investment a “form of supply-chain insurance.”

NVIDIA “is gaining exposure to the scarce physical assets that determine whether its chips can be deployed,” Dealroom.co says. “The move makes Nvidia look less like a pure chip company and more like an allocator of infrastructure capacity.”

Investment precedes possible IPO in 2027

Thanks to NVIDIA’s cash infusion, Lancium and its portfolio of land and power connections carry an enterprise value of about $10 billion, according to The Information.

The investment should enable Lancium to expand as it explores a potential IPO next year, The Information reported.

Neither Lancium nor NVIDIA is responding to requests for comment about the deal.

Lancium’s marquee project is a 1,000-acre data center and power generation campus in West Texas for the $500 billion Stargate initiative. Stargate, a joint venture comprising MGX, OpenAI, Oracle and SoftBank, is building data centers equipped to handle AI-level workloads.

“Epicenter of energy and AI infrastructure”

Founded in 2017, Lancium has 4 gigawatts of leased capacity and a more than 15-gigawatt development pipeline. In 2024, Blackstone Energy Transition Partners invested about $500 million in Lancium, giving Blackstone a roughly 50 percent stake.

“This partnership with NVIDIA is a strong testament to Lancium’s position at the epicenter of energy and AI infrastructure … . We look forward to continuing to partner with these leading companies to help power the next generation of AI innovation,” Bilal Khan, senior managing director at Blackstone, said in a release.

Through the NVIDIA partnership, Lancium’s data center and power generation campuses will use the tech company’s “AI factory” platform, including software, computing, and networking capabilities. This will give NVIDIA customers and partners access to power capacity that supports heavy AI workloads.

“We have spent years assembling the power, the land, and the infrastructure expertise needed to deliver AI data center capacity at a scale the world has never seen,” Michael McNamara, co-founder and CEO of Lancium, said in the release.

“Partnering with NVIDIA — the definitive technology platform for AI computing — ensures that every campus in our portfolio will be deployed with the industry’s most advanced technology and that NVIDIA’s customers will have access to the capacity they need to compete and lead in the AI era.”

U.S. oil giant Chevron confirms it will expand operations in Venezuela

O&G News

Oil giant Chevron confirmed that it will expand operations in Venezuela after President Donald Trump announced an ambitious deal to develop the nation’s oil reserves and give the Pentagon a stake in the profits.

Chevron, the only U.S. oil company with a major presence in Venezuela, said Wednesday that it has been assigned additional acreage in the Orinoco Belt, where it has active operations. The company plans to invest more than $7 billion over the next five years, with the goal of more than doubling its current production to about 600,000 barrels a day.

“Chevron’s history in Venezuela spans more than a century, and our expanded position reflects our confidence in the country’s deep resource potential,” CEO Mike Wirth said in a prepared statement.

Venezuela holds the world's largest proven reserves, totaling more than 303 billion barrels of crude oil, according to OPEC's 2025 Annual Statistical Bulletin. Saudi Arabia is a distant second with 267 billion barrels.

Yet because Venezuela's energy infrastructure is severely degraded and the nation is operating under international sanctions, its daily production is just over 1 million barrels, compared with the 10 million to 11 million barrels that Saudi Arabia produces each day. The U.S. produces almost 14 million barrels per day.

Chevron, the second-largest U.S. oil company, has had a presence in Venezuela since 1923.

“President Trump’s mission in Venezuela is straightforward. The mission is to bring peace, freedom, opportunity and prosperity to the people of Venezuela,” Energy Secretary Chris Wright said Wednesday in Caracas, Venezuela. “I believe the deals that are signed today – tens of billions of dollars of investment, ultimately many thousands of jobs – are critical in starting this ball rolling of peace, opportunity and prosperity for everyone in Venezuela.”

The White House confirmed Monday that it is partnering with North American Blue Energy Partners, NABEP, as part of Trump ’s push to tap into Venezuela’s oil industry.

Yet the agreement has been met with skepticism from energy experts who say it will take years to revive Venezuela’s oil industry, which is in disarray after years of neglect.

There are also questions about whether Venezuela’s acting president, Delcy Rodríguez, has the authority to give NABEP 100-year rights over 17 oil fields with reserves of 65 billion barrels — and whether future Venezuelan or American administrations would overturn the agreement.

Venezuela's constitution states that arrangements like the one that the United States announced this week must be approved by the National Assembly, which has not happened, wrote Ian Vásquez, vice president for international studies at the Cato Institute.

“The deal lacks legitimacy since it was agreed to with a dictatorship that has clung to power for decades through violence and by committing what was probably the largest electoral fraud in Latin American history in 2024,” Vásquez wrote. “The agreement was also reached under overwhelming pressure, military and otherwise, from the United States. As such, any future Venezuelan democracy will question the deal, thus undermining confidence in the current arrangement.”

Wright on Wednesday told reporters during a joint press conference with Rodríguez pushed back on criticism.

“This is a deal that’s a massive win and benefit for the people of the United States of America and a massive win for the people of Venezuela," he said. "Because what it’s going to do is take resources that are underground, not helping anyone, and invest capital and money and technology and bring them to the surface to better the lives of Venezuelans, better supply energy to Americans.”

Trump has eyed Venezuela’s oil since the January capture of then-President Nicolás Maduro and has pressed to get U.S. businesses back into the country. “We have Exxon going in, we have Chevron going in. We have our big oil companies going in,” he said that same month.

He suggested again on Monday that other U.S. oil majors were preparing for a return, though other than Chevron, there is no evidence of that.

Exxon Mobil CEO Darren Woods said in January that Venezuela was “ uninvestable.” An Exxon spokesman said this week that “nothing has changed.”

The history of U.S. oil majors in Venezuela explains the hesitation.

Venezuela nationalized its oil industry in 1976 and created the state-owned company Petróleos de Venezuela S.A. A second nationalization occurred in 2007, when President Hugo Chávez pushed foreign oil companies into state-controlled joint ventures and seized the assets of companies that refused. Chevron agreed to a joint venture. Others, including Exxon and ConocoPhillips, refused, and Venezuela took their assets.

Trump has said that the agreement with Venezuela would “substantially lower” gasoline prices in the U.S. However, analyst have repeatedly warned that Venezuela’s dilapidated oil infrastructure will require years of restoration work and tens of billions of dollars to resuscitate.

“It could take 2 to 4 years to get new greenfield facilities online in the Orinoco region,” Amy Jaffe, director of the Global Energy, Climate, and Sustainability Lab at New York University, said in an email. "Other places where there is no pipeline and other kinds of support infrastructure could take longer.”

Meanwhile, the national average price for a gallon of regular gasoline jumped overnight to $4.12, according to the motor club AAA. That is 93 cents more than it cost at this point last year.