powering on

Packaging producer procures power purchase plan with Texas solar projects

The two projects are in Wharton County and Bell County and will add renewable energy to the Texas energy grid. Photo via Pexels

A leading provider of sustainable fiber-based paper and packaging solutions is supporting the first of two Texas-based solar projects.

WestRock set the stage by entering into virtual power purchase agreements with Houston-based ENGIE North America. The two projects are in Wharton County and Bell County and will add renewable energy to the Texas energy grid.

Bernard Creek Solar is the first of two solar projects that are part of the VPPAs between WestRock and ENGIE, and is currently operating southwest of Houston in Wharton County. WestRock contracted 207 megawatts from the project Under the VPPA. The 230 megawatts Bernard Creek solar project is projected to produce approximately 500,000 megawatts an hour annually, which will generate over $45 million in revenue for the county and create more than 250 jobs during construction.

The WestRock VPPA for the Bernard Creek project, and the similar project located in Bell County, will add a total of 282 megawatts of renewable energy to the Texas energy grid.

"We are delighted that Bernard Creek Solar is supporting WestRock’s ambitions to meet its 2030 science-based targets,” Dave Carroll, chief renewables officer at ENGIE, says in a news release. “North AmericaENGIE’s projects are focused on meeting the specific needs of our clients as we work together to accelerate the energy transition in North America, and this agreement reflects that."

The VPPAs with WestRock have contributed to ENGIE to surpass more than 1 gigawatt of signed power purchases. ENGIE is recognized as the top developer to sell corporate energy PPAs and has ranked in the top three since 2019 with a total corporate PPA portfolio in the USA of 7.3 according to BloombergNEF's latest Market Outlook report. Schneider Electric’s Sustainability Business provided the advisory services and strategy management for these pivotal VPPAs with WestRock.

"We are pleased to play a role in the production of clean energy from large-scale solar projects and to join forces with ENGIE and Schneider Electric to reduce greenhouse gas emissions by adding more renewable energy to the grid,” David B. Sewell, president and CEO at WestRock, adds.

Trending News

A View From HETI

Ahmad Elgazzar, Haotian Wang and Shaoyun Hao were members of a Rice University team that recently published findings on how acid bubbling can improve CO2 reduction systems. Photo courtesy Rice.

In a new study published in the journal Science, a team of Rice University researchers shared findings on how acid bubbles can improve the stability of electrochemical devices that convert carbon dioxide into useful fuels and chemicals.

The team led by Rice associate professor Hoatian Wang addressed an issue in the performance and stability of CO2 reduction systems. The gas flow channels in the systems often clog due to salt buildup, reducing efficiency and causing the devices to fail prematurely after about 80 hours of operation.

“Salt precipitation blocks CO2 transport and floods the gas diffusion electrode, which leads to performance failure,” Wang said in a news release. “This typically happens within a few hundred hours, which is far from commercial viability.”

By using an acid-humidified CO2 technique, the team was able to extend the operational life of a CO2 reduction system more than 50-fold, demonstrating more than 4,500 hours of stable operation in a scaled-up reactor.

The Rice team made a simple swap with a significant impact. Instead of using water to humidify the CO2 gas input into the reactor, the team bubbled the gas through an acid solution such as hydrochloric, formic or acetic acid. This process made more soluble salt formations that did not crystallize or block the channels.

The process has major implications for an emerging green technology known as electrochemical CO2 reduction, or CO2RR, that transforms climate-warming CO2 into products like carbon monoxide, ethylene, or alcohols. The products can be further refined into fuels or feedstocks.

“Using the traditional method of water-humidified CO2 could lead to salt formation in the cathode gas flow channels,” Shaoyun Hao, postdoctoral research associate in chemical and biomolecular engineering at Rice and co-first author, explained in the news release. “We hypothesized — and confirmed — that acid vapor could dissolve the salt and convert the low solubility KHCO3 into salt with higher solubility, thus shifting the solubility balance just enough to avoid clogging without affecting catalyst performance.”

The Rice team believes the work can lead to more scalable CO2 electrolyzers, which is vital if the technology is to be deployed at industrial scales as part of carbon capture and utilization strategies. Since the approach itself is relatively simple, it could lead to a more cost-effective and efficient solution. It also worked well with multiple catalyst types, including zinc oxide, copper oxide and bismuth oxide, which are allo used to target different CO2RR products.

“Our method addresses a long-standing obstacle with a low-cost, easily implementable solution,” Ahmad Elgazzar, co-first author and graduate student in chemical and biomolecular engineering at Rice, added in the release. “It’s a step toward making carbon utilization technologies more commercially viable and more sustainable.”

A team led by Wang and in collaboration with researchers from the University of Houston also shared findings on salt precipitation buildup and CO2RR in a recent edition of the journal Nature Energy. Read more here.

Trending News