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Updated 2/28: Energy secretary on visit to an uncertain Oak Ridge shrugs at climate change; offers little concrete update on federal cuts
Written by Ben PoundsU.S. Sen. Bill Hagerty, R-Tenn.; U.S. Secretary of Energy Chris Wright; Rep. Chuck Fleischmann; R-Chattanooga; and Open AI CEO Greg Brockman spoke with the press during a tour of Oak Ridge-area nuclear facilities. Ben Pounds/Hellbender Press
Visit by energy secretary doesn’t address program cuts as former fracking CEO downplays climate change threat; visit comes following diversity program cuts; full extent of Oak Ridge impacts still unknown
Hellbender Press typically avoids the use of anonymous sources. The sources in this story spoke on condition they not be identified so they could speak on a sensitive matter.
This story will be updated. The original stories continue below.
OAK RIDGE — U.S. Secretary of Energy Chris Wright denied that climate change was a “crisis” and downplayed its threat during a visit to an international hub of scientific expertise rattled by early actions of the second Trump Administration. His visit did little to allay fears of cuts to staff and programs at Oak Ridge National Laboratory, where the most concrete signs of change have been the dismantling of diversity efforts.
Wright visited ORNL on Feb. 28, and at a press conference defended the Trump administration’s actions on climate change, energy sources and the Department of Government Efficiency (DOGE), a group headed by Elon Musk that has recommended cutting programs and staff in various government departments.
He did not announce any layoffs at the lab itself, however, and implied research related to climate there will continue. Oak Ridge National Laboratory is home to many kinds of related research, including at the Climate Change Science Institute. CCSI does modeling and gathers data on the climate, as well as working on solutions to the problem.
Wright promoted research on artificial intelligence, which he called “Manhattan Project II,” and nuclear energy, and he appeared alongside Sen. Bill Hagerty, R-Tenn., Rep. Chuck Fleischmann R-Chattanooga and Open AI CEO Greg Brockman, who also spoke and answered questions.
“I don’t think you’ll see any reduction in the science that we do regarding climate change or any of these other really big questions,” said Wright in response to a reporter’s questions about how cuts at the lab might affect climate change-related research at ORNL, which his department funds through a partnership with contractor Battelle and the University of Tennessee. He said, however, he still “100 percent” believed there was no climate “crisis” and said scientific reports backed up his view.
“We haven’t seen an increase in the frequency or intensity of hurricanes, floods, droughts, storms. Wildfires are on an uptick because we stopped managing our forests,” he said. “Deaths from extreme weather, which is what you hear the press and politicians’ fearmongering about, it declined over 90 percent in my lifetime as the population’s grown. So climate change is a real phenomenon. It’s just not even remotely close to the world’s biggest problem.” He also said an intergovernmental climate change report also showed economists saying climate change was not as important as issues like education, free trade and “empowerment.”
These claims are a mixed bag of truth. While the frequency of hurricanes hitting the United States, for example, hasn’t increased, a recent Columbia University study showed the tropical cyclones’ intensity for the East and Gulf Coasts has. Also unmentioned by Wright was any impact the climate has on disease or health conditions apart from extreme weather, a subject on which experts at Tennessee’s own Vanderbilt University have sounded the alarm.
Wright was CEO of a hydraulic fracking company, Liberty Energy, before his appointment.
“It’s a real thing, but nothing in the science of climate change or in the economics of climate change shows it to be the world’s biggest problem,” Wright said. “When you call something a crisis, it means we don’t have time to stop and think. We’ve just got to take action. That’s exactly the opposite of what climate science is.”
During the meeting, he also defended Musk, DOGE and Trump’s actions generally while not announcing any such cuts for the civilian research at Oak Ridge National Laboratory or the weapons maintenance at Y-12, which is managed by a different contractor. A reporter at the event mentioned an earlier instance in which workers at Y-12 National Security Complex received termination letters that were then rescinded. While the reporter asked him to offer reassurance on job security, he sidestepped that question.
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ORNL partnership in Chattanooga tests new method for protecting quantum internet
Written by Oak Ridge National Laboratory
Oak Ridge National Laboratory collaborated with commercial utility EPB and the University of Tennessee Chattanooga to develop and test the first transmission of an entangled quantum signal using multiple wavelength channels and automatic polarization stabilization over a commercial network with no downtime. Morgan Manning/ORNL, U.S. Dept. of Energy
OAK RIDGE — Researchers at the Department of Energy’s Oak Ridge National Laboratory joined forces with EPB of Chattanooga and the University of Tennessee at Chattanooga to demonstrate the first transmission of an entangled quantum signal using multiple wavelength channels and automatic polarization stabilization over a commercial network with no downtime.
The successful trial of this innovation marks another step toward the eventual creation of a quantum internet that could prove to be more capable and secure than existing networks.
Quantum computing relies on quantum bits, or qubits, to store information. Qubits, unlike the binary bits used in classical computing, can exist in more than one state simultaneously via quantum superposition, which allows combinations of physical values to be encoded on a single object.
The demonstration used automatic polarization compensation, or APC, to stabilize the polarization, or direction of the electric field oscillation in a light wave, of a signal sent over the EPB’s fiber-optic commercial quantum network. The approach used reference signals generated by lasers to continuously check the transmitted polarization, detected with an ultrasensitive method known as heterodyne detection.
APCs reduce data interference caused by outside forces like wind and temperature changes that can affect the fiber optic cables used to transmit quantum signals.
“One of our goals all along has been to develop quantum communications systems that operate seamlessly for users,” said Joseph Chapman, an ORNL quantum research scientist who led the study. “This is the first demonstration of this method, which enabled relatively fast stabilization while preserving the quantum signals, all with 100 percent uptime — meaning the people at either end of this transmission won’t notice any interruption in the signal and don’t need to coordinate scheduled downtime.”
The method enabled continuous transmission of the signals with no interruptions for more than 30 hours between the node on the University of Tennessee Chattanooga campus and two other EPB quantum network nodes, each about half a mile away. The UTC node held an entangled-photon source developed by Muneer Alshowkan, an ORNL quantum research scientist.
The quantum network technology using automatic polarization compensation developed by ORNL was demonstrated in Chattanooga, Tennessee. The test utilized EPB’s fiber-optic commercial quantum network and involved the University of Tennessee Chattanooga and industry partner Qubitekk. Joe Chapman, Morgan Manning/ORNL, U.S. Dept. of Energy
ORNL engineering eco-friendly solvents
ORNL researchers are using artificial intelligence to speed the identification of environmentally friendly solvents for industrial applications. Andy Sproles/ORNL, U.S. Department of Energy
OAK RIDGE — Oak Ridge National Laboratory scientists developed a method leveraging artificial intelligence to accelerate the identification of environmentally friendly solvents for industrial carbon capture, biomass processing, rechargeable batteries and other applications.
The research targets a class of solvents known for being nontoxic, biodegradable, highly stable, cost-effective and reusable.
The scientists developed a method to predict solvent viscosity — a key property impacting performance for industrial applications. They compiled nearly 5,000 data points on 672 solvents, evaluated quantum chemical features that guide solvent molecular interactions, and deployed an algorithm called categorical boosting to quickly parse the data and determine the best candidates.
“We reduced computational time and complexity with our approach, while still incorporating all possible molecular interactions,” said ORNL’s Mohan Mood.
ORNL’s Michelle Kidder said, “Interpretable machine learning helps us to design solvents with desired properties for carbon capture by reducing experimental time and cost in the laboratory.”
Less carbon, more chill: ORNL tech reduces refrigerator CO2 emissions by 30 percent
A novel technology developed by ORNL keeps food and beverages refrigerated with an advanced evaporator, phase change materials, metal foam, direct-contact defrosting technology and a low global warming refrigerant. Oak Ridge National Laboratory
OAK RIDGE — A technology developed by Oak Ridge National Laboratory keeps food refrigerated with phase-change materials, or PCMs, while reducing carbon emissions by 30 percent.
More than 100 million household refrigerators in operation across the United States consume up to 2 kilowatts of electricity daily. These refrigerators contribute to energy consumption and carbon emissions by using compressors that cycle on and off day and night, pumping refrigerants across evaporator coils to maintain low temperatures for fresh and frozen compartments.
(Hellbender Press previously reported on the development of new coolants and systems at ORNL).
ORNL’s innovation uses advanced evaporators with PCMs installed in each compartment for cold energy storage. PCMs are useful for heating and cooling because they store and release energy when changing from solids to liquids or vice versa. Researchers applied porous metals, direct-contact defrosting technology and a refrigerant with low-global-warming potential to enhance performance and minimize environmental impact.
“PCMs are integrated with evaporator coils to keep temperature constant, requiring one operating cycle and allowing refrigerators to operate almost 100% at nighttime, when energy use is lower,” ORNL’s Zhiming Gao said. “This reduces electricity demand, saves costs and maintains efficiency.”
— Oak Ridge National Laboratory
Hellbender Press garners first-place award for investigation into proposed Oak Ridge airport
Written by Thomas Fraser
The honor continues Hellbender Press’s tradition of excellence in journalism.
KNOXVILLE — Hellbender Press: The Environmental Journal of Southern Appalachia, was honored with a first-place award by the East Tennessee Society of Professional Journalists (ETSPJ) for its probe into a controversial municipal airport proposed by the city of Oak Ridge.
Reporters Wolf Naegeli and Ben Pounds and Hellbender Press editor and publisher Thomas Fraser accepted the award during ETSPJ’s 2023 Golden Press Card awards, held May 16 at Maple Hall in downtown Knoxville. The honors, which are bestowed upon television, radio, print and digital media, “strive to honor the best journalism in the eastern region of Tennessee from the past year,” according to ETSPJ.
Hellbender Press was honored with first place in the digital space for its investigation into the proposed airport, which the city maintains would juice economic development, especially in the high-tech business realm.
ORNL chemists invent a more efficient way to extract lithium
Oak Ridge National Laboratory
OAK RIDGE — Chemists at the Department of Energy’s Oak Ridge National Laboratory have invented a more efficient way to extract lithium from waste liquids leached from mining sites, oil fields and used batteries. They demonstrated that a common mineral can adsorb at least five times more lithium than can be collected using previously developed adsorbent materials.
“It’s a low-cost, high-lithium-uptake process,” said Parans Paranthaman, an ORNL Corporate Fellow and National Academy of Inventors Fellow with 58 issued patents. He led the proof-of-concept experiment with Jayanthi Kumar, an ORNL materials chemist with expertise in the design, synthesis and characterization of layered materials.
“The key advantage is that it works in a wider pH range of 5 to 11 compared to other direct lithium extraction methods,” Paranthaman said. The acid-free extraction process takes place at 140 degrees Celsius, compared to traditional methods that roast mined minerals at 250 degrees Celsius with acid or 800 to 1,000 degrees Celsius without acid.
Lithium is a lightweight metal commonly used in energy-dense and rechargeable batteries. Electric vehicles, which are needed to achieve net-zero emissions by 2050, rely on lithium-ion batteries. Industrially, lithium is extracted from brines, rocks and clays. The ORNL innovation may help meet rising demand for lithium by making domestic sources commercially viable.
Momentum builds slowly for TVA’s post-coal plans
Written by Ben Pounds
Supercomputer simulation of plasma turbulence in a spherical tokamak, which is an experimental machine designed to harness the energy of fusion. Image courtesy of Walter Guttenfelder, Princeton Plasma Physics Laboratory and Filippo Scotti, Lawrence Livermore National Laboratory via DOE.
Fusion research, natural gas, solar power and battery improvements at heart of TVA’s plans to wean itself off coal
OAK RIDGE — The Tennessee Valley Authority is phasing out coal and announcing developments tied to other energy sources at two plants that sit on either side of Oak Ridge.
One of the options includes a fusion test site. Scientists have long pursued fusion energy, though the technology remains in infancy and has yet to generate electricity anywhere.
The TVA coal plant on Edgemoor Road in the Claxton community in Anderson County closed Dec. 1 last year. TVA remains uncommitted to any plans for most of the land around the plant. A company recently announced, however, that it plans tests connected to fusion power in a small part of one of Bull Run’s old buildings by 2028. It will be an experiment and not generate power directly.
Meanwhile, TVA plans to retire Kingston Fossil Plant on Swan Pond Road in Harriman by the end of 2027. Its nine coal-fired units power about 818,000 homes. To replace the power generated at the plant, TVA plans to build a new complex at the Kingston plant’s site, combining natural gas, solar power and battery storage.
TVA plans to retire all its coal plants by the 2030s.
Experts and citizens plan and commiserate over TVA’s lack of public process
Written by Élan Young
Tennessee state Rep. Justin J. Pearson speaks to community members assembled for the evening discussion during the People’s Voice on TVA’s Energy Plan. John Waterman/Appalachian Voices
A lack of public process brought together a coalition of environmental organizations
NASHVILLE — In every state except Tennessee, for-profit utilities and their regulators are required to get public input about energy-resource planning.
These Integrated Resource Plans (IRPs) provide an opportunity for a utility to demonstrate that the ratepayer money the utility spends is on the best mix of energy investments that meet this objective.
In Tennessee, however, TVA, which is the nation’s largest public power provider, has no process for engaging the public on its IRPs.
It is this lack of public process that brought a coalition of environmental organizations together to host a mock public hearing in a Nashville church last month presided by Ted Thomas, former chair of Georgia Center for Energy Solutions. Their goal was to call attention to the fact that TVA acts more like a corporation or a self-regulated monopoly than as a public utility. The groups say that lack of public involvement in the process harms Tennesseeans across the board.
ORNL wants to leave watercraft carbon emissions in its wake
This Caterpillar in-line 6-cylinder marine diesel engine will be the subject of research and development for efficient, more climate-friendly marine propulsion with methanol fuel. Genevieve Martin, ORNL/U.S. Dept. of Energy
OAK RIDGE — The Department of Energy’s Oak Ridge National Laboratory and Caterpillar Inc. have entered into a cooperative research and development agreement to investigate methanol as an alternative fuel source for four-stroke internal combustion marine engines. The collaboration supports efforts to decarbonize the marine industry, a hard-to-electrify transportation sector.
As the U.S. continues to seek ways to reduce environmentally harmful greenhouse gas emissions, methanol is an attractive fuel alternative to diesel because it reduces carbon emissions. Methanol also reduces emissions of nitrogen oxides and sulfur oxides. In addition, methanol’s relatively high energy density makes it easier to store on marine vessels than gaseous fuels meaning it can be more easily integrated into overall existing engine design and operation.
Greener solution powers new method for lithium-ion battery recycling
ORNL researchers Lu Yu and Yaocai Bai examine vials that contain a chemical solution that causes the cobalt and lithium to separate from a spent battery, followed by a second stage when cobalt precipitates in the bottom. Carlos Jones/ORNL/DOE
OAK RIDGE — Used lithium-ion batteries from cell phones, laptops and a growing number of electric vehicles are piling up, but options for recycling them remain limited mostly to burning or chemically dissolving shredded batteries. The current state-of-the-art methods can pose environmental challenges and be difficult to make economical at the industrial scale.
The conventional process recovers few of the battery materials and relies on caustic, inorganic acids and hazardous chemicals that may introduce impurities. It also requires complicated separation and precipitation to recover the critical metals. However, recovering metals such as cobalt and lithium could reduce both pollution and reliance on foreign sources and choked supply chains.
This research is funded as a project of the Advanced Battery Recycling Consortium, or ReCell, a program of the Vehicle Technologies Office within DOE’s Office of Energy Efficiency and Renewable Energy. Lu Yu and Yaocai Bai and researchers Rachid Essehli and Anuj Bisht contributed to the study, which utilized the DOE’s Center for Nanophase Materials Science at ORNL.
— Oak Ridge National Laboratory
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ORNL separates rare earth from the chaff
Membrane solvent extraction schematic. ORNL
OAK RIDGE — Caldera Holding, the owner and developer of Missouri’s Pea Ridge iron mine, has entered a nonexclusive research and development licensing agreement with Oak Ridge National Laboratory to apply a membrane solvent extraction technique, or MSX, developed by ORNL researchers to process mined ores. MSX provides a scalable, efficient way to separate rare earth elements, or REEs, from mixed mineral ores.
The MSX technology was pioneered at ORNL by researchers in the Department of Energy’s Critical Materials Innovation Hub, or CMI, led by Ames National Laboratory. The inventors, Ramesh Bhave and Syed Islam of ORNL’s Chemical Sciences Division are named in 26 inventions and five active licenses related to the recovery of REEs.
TDEC releases money to help rubber meet the road
KNOXVILLE — The Tennessee Department of Environment and Conservation granted $350,197 to the University of Tennessee from the Tire Environmental Act Program.
“We are seeing great advances in repurposing tires for environmental benefits,” said TDEC Deputy Commissioner Greg Young. ”Programs like this not only help clean up sites of used tires, they involve innovative new uses for them. We congratulate UT-Knoxville on this project.”
UTK is partnering with the Tennessee Department of Transportation (TDOT) to install a series of pavement test sections using the technologies developed from this project. Benefits of including rubber in asphalt pavement mixes include improved skid resistance, cracking resistance, and noise reduction.
The purpose of the Tire Environmental Act Program is to select and fund projects that best result in beneficial uses for waste tires. Projects must qualify for one of three categories: tire processing/recycling, tire-derived material use, or research and development. The program provides grant funding to eligible entities, including local governments, non-profit organizations, higher education institutions, K-12 schools and for-profit businesses.
Tennessee established the Tire Environmental Fund in 2015. Upon the first retail sale of a new motor vehicle to be titled and registered in Tennessee, a flat fee based on the number of a vehicle’s wheels is assessed. The fee goes into the fund, which is used for projects creating or supporting beneficial end uses for waste tires.
Since 2015, grantees have been awarded almost $6.8 million, and approximately 5.5 million tires or nearly 58,000 tons of scrap tires have been diverted from landfills. The tires are repurposed for use in rubberized asphalt, tire-derived aggregate, tire-derived fuel, granulated rubber porous flexible pavement, and other beneficial end uses that result in tires being diverted from landfills for a higher and better use.
— Tennessee Department of Environment and Conservation
Residential glass collection program to launch in November, as Knoxville startups tackle sustainability
Written by MaryBeth Mahne
KnoxFill founder Dr. Michaela Barnett was recently featured on WUOT to address trash and sustainability. KnoxFill
This article was originally published on WUOT in a collaboration with students from the University of Tennessee's Department of Journalism and Media
Two Knoxville-based startups are tackling the challenges of waste and sustainability, one household at a time
KnoxFill, founded by Dr. Michaela Barnett, is the city’s only refillery, and provides household and food products, ranging from shampoo and laundry detergent to coffee and tea.
Vitriform3D, a 3D printer technology focused on using glass waste and converting it into architectural building products, was founded by Alex Stiles, PhD and Dustin Gilmer, PhD.
Both businesses are filling a void left by a lack of state and local policies to address sustainability issues, and by the logistics challenges of recycling. “We know from the science that recycling can be part of a sustainable waste management program, but it really comes after trying to reduce source waste,” Barnett said. “Recycling really should be a last resort.”
Vitriform3D offers consumers the chance to recycle, and know that their recyclables are also being re-used. Knoxville has long lacked easy glass recycling capabilities; currently, residents have to transport their own glass to one of five repositories around the city. “We’re launching a service we call Fourth & Glass, Stiles said. “That is Knoxville’s first dedicated glass only recycling program. We do have the equipment to handle glass and turn it into new products.”
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Solar for All: An opportunity to expand alternative-energy access
Written by Southern Environmental Law Center
The historic federal climate legislation known as the Inflation Reduction Act passed last summer. The $7 billion program will help fund rooftop solar projects benefiting communities with lower incomes and provide workforce development enabling millions of households’ access to affordable, resilient, and clean solar energy. Southern Environmental Law Center
A competitive grant program to bring solar power to people with limited incomes has found huge demand in the South
CHARLOTTESVILLE — Alabama, Georgia, North Carolina, South Carolina, Tennessee and Virginia, as well as other tribal governments, municipalities and nonprofits submitted applications for Solar for All, a new program designed to expand solar access.
Part of the historic federal climate legislation, the Inflation Reduction Act passed last summer, the $7 billion program will fund rooftop solar projects benefiting communities with lower incomes and provide workforce development enabling millions of households’ access to affordable, resilient and clean solar energy and related jobs. These funds have the potential to double the number of rooftop solar customers with 100 percent of cost saving solar, benefiting customers that would not otherwise be able to access solar.
“This is a generational opportunity to enable low-income households in the South to access affordable, resilient, and clean solar energy,” Thompson said.