Texas — along with 24 other states — has filed lawsuits against a recent set of soot pollution standards from the EPA. Photo via Pixabay/Pexels

A new Biden administration rule that sets tougher standards for deadly soot pollution faced a barrage of legal challenges Wednesday, as 25 Republican-led states — including Texas — and a host of business groups filed lawsuits seeking to block the rule in court.

Twenty-four states, led by attorneys general from Kentucky and West Virginia, filed a joint challenge stating that new Environmental Protection Agency rule would raise costs for manufacturers, utilities and families and could block new manufacturing plants and infrastructure such as roads and bridges. Texas filed a separate suit, as did business groups led by the U.S. Chamber of Commerce and National Association of Manufacturers.

“The EPA’s new rule has more to do with advancing President (Joe) Biden’s radical green agenda than protecting Kentuckians’ health or the environment, said Kentucky Attorney General Russell Coleman, who is leading the joint lawsuit along with West Virginia Attorney General Patrick Morrisey.

The EPA rule “will drive jobs and investment out of Kentucky and overseas, leaving employers and hardworking families to pay the price,” Coleman said.

The soot rule is one of several EPA dictates under attack from industry groups and Republican-led states. The Supreme Court heard arguments last month on a GOP challenge to the agency's “good neighbor rule,” which restricts smokestack emissions from power plants and other industrial sources that burden downwind areas.

Three energy-producing states — Ohio, Indiana and West Virginia — challenged the rule, along with the steel industry and other groups, calling it costly and ineffective. The rule is on hold in a dozen states because of the court challenges.

In opposing the soot rule, Republicans and industry groups say the United States already has some of the strictest air quality standards in the world — tougher than the European Union or major polluters such as China and India.

Tightening U.S. standards "wouldn't improve public health, but it would put as many as 30% of all U.S. counties out of compliance under federal law, leading to aggressive new permitting requirements that could effectively block new economic activity,'' Coleman said.

The EPA rule sets maximum levels of fine particle pollution — more commonly known as soot — at 9 micrograms per cubic meter of air, down from 12 micrograms established a decade ago under the Obama administration.

Environmental and public health groups hailed the rule as a major step to improve the health of Americans, including future generations. EPA scientists have estimated exposure at previous limits contributed to thousands of early deaths from heart disease and lung cancer, along with other health problems.

EPA Administrator Michael Regan said the new soot rule, finalized last month, would create $46 billion in net health benefits by 2032, including prevention of up to 800,000 asthma attacks and 4,500 premature deaths. The rule will especially benefit children, older adults and those with heart and lung conditions, Regan said, as well as people in low-income and minority communities adversely affected by decades of industrial pollution.

"We do not have to sacrifice people to have a prosperous and booming economy,″ Regan said.

Biden is seeking reelection, and some fellow Democrats have warned that a tough new soot standard could harm his chances in key industrial states such as Pennsylvania, Michigan and Wisconsin.

The EPA and White House officials brushed aside those concerns, saying the industry has developed technical improvements to meet previous soot standards and can adapt to meet the new ones. Soot pollution has declined by 42% since 2000, even as the U.S. gross domestic product has increased by 52%, Regan said.

The new rule does not impose pollution controls on specific industries. Instead, it lowers the annual standard for fine particulate matter for overall air quality. The EPA will use air sampling to identify counties and other areas that do not meet the new standard. States would then have 18 months to develop compliance plans for those areas. States that do not meet the new standard by 2032 could face penalties, although EPA said it expects that 99% of U.S. counties will be able to meet the revised annual standard by 2032.

Industry groups and Republican officials dispute that and say a lower soot limit could put hundreds of U.S. counties out of compliance.

The U.S. Chamber of Commerce warned the White House in January that 43% of total particulate emissions come from wildfires, and called the pollution standard "the wrong tool to address this problem.''

The EPA said it will work with states, counties and tribes to account for and respond to wildfires, an increasing source of soot pollution, especially in the West, where climate change has led to longer wildfire seasons, with more frequent and intense fires. The agency allows states and air agencies to request exemptions from air-quality standards due to “exceptional events," including wildfires and prescribed fires.

Besides Kentucky, West Virginia and Texas, other states challenging the EPA rule include: Alabama, Alaska, Arkansas, Florida, Georgia, Idaho, Indiana, Iowa, Kansas, Louisiana, Mississippi, Missouri, Montana, Nebraska, North Dakota, Ohio, Oklahoma, South Carolina, South Dakota, Tennessee, Utah and Wyoming.

All three cases were filed before the U.S. Court of Appeals for the District of Columbia.

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Houston companies win big at Elon Musk-backed carbon removal competition

xprize winners

Houston-based Mati Carbon has won the $50 million grand prize in the XPRIZE Carbon Removal competition, backed by Elon Musk’s charitable organization, The Musk Foundation.

Mati was selected in 2024 as one of 20 global finalists. The company removes carbon through its Enhanced Rock Weathering (ERW) program that works with agricultural farms in Africa and India.

The 3-year-old startup accelerates the natural process of rock weathering (ERW) by applying pulverized basalt to croplands of partnered smallholder farmers, free of charge. Mati says the farmers it partners with are some of the most vulnerable to the impacts of climate change.

“Winning this XPRIZE competition is an incredible honor and a definitive validation of our research and development, and building out the infrastructure needed to impact millions of farmers while delivering verifiable carbon dioxide removal at a gigaton scale,” Mati Carbon Founder and CEO Shantanu Agarwal, said in a news release. “I couldn’t be prouder, not just of the Mati team, but of our collaborators, research partners and the thousands of smallholder farmers who let us be part of their lives. This XPRIZE recognition will allow us to collaborate with local partners to accelerate the use of enhanced rock weathering across the Global South.”

Mati reports that it plans to use the award to “scale its efforts working with smallholder farmers worldwide.” Apart from the XPRIZE funding, Mati plans to grow its model through the sale of CDR credits. According to the company, it counts Shopify, Stripe, and H&M among its early carbon credit buyers.

“Mati Carbon’s deployments bolster farmers’ livelihoods through improved soil health, reduced agricultural inputs, and increased income at zero cost to them. Mati Carbon’s team has developed a scientifically rigorous approach to monitoring and verification, and excelled across each of XPRIZE’s prize evaluation criteria – operational, sustainability, and cost metrics – giving the XPRIZE judges the highest confidence in Mati Carbon’s solution’s long-term scalability,” the XPRIZE judges wrote.

Houston-based Vaulted Deep took home the second-runner-up prize in the competition and $8 million for its organic waste storage process. The company provides permanent carbon storage by injecting nonhazardous organic waste deep underground. It spun off with $8 million in seed funding from Advantek Waste Management Services in 2023.

"Our approach is grounded in geomechanical injection techniques that have been safely deployed globally for decades by our team and predecessors," Omar Abou-Sayed, co-founder and executive chairman of Vaulted, said in a separate release. "XPRIZE recognized that this is a proven approach—already in use, delivering impact, and built on the kind of reliability the industry needs to scale responsibly."

Launched in 2021, the four-year XPRIZE Carbon Removal competition challenged global innovators to deploy scalable solutions for removing carbon dioxide from the atmosphere and oceans. More than 1,300 teams from 88 countries competed. XPRIZE finalists were required to remove at least 1,000 tonnes of CO2 over a one-year demonstration period.

French company NetZero took home the first-runner-up prize of $15 million, and London-based UNDO came in as third-runner-up with a $5 million prize.

Since the announcement of the XPRIZE Carbon Removal competition, the Musk-led Department of Government Efficiency has cut climate funding for agencies, projects and research. While the Musk Foundation sponsored the XPRIZE event, it is not affiliated with the California-based organization, according to the Associated Press.

Houston Energy Transition Initiative announces new members for 2025

The view from heti

The Greater Houston Partnership’s Houston Energy Transition Initiative (HETI) has welcomed three new member companies who aim to accelerate global solutions for an energy-abundant, low-carbon future.

HETI members are champions in their fields, each with their distinctive advantage to help region lead the energy transition with innovative solutions. New members include:

Kanin Energy

A purpose-built, turnkey developer that focuses on transforming industrial waste heat into emission-free power, providing bundled solutions to industrial facilities that include the design, construction, operation, and financing of waste heat to power and other decarbonization projects.

TerraPower

A developer of advanced technologies that deliver safe, affordable, and abundant carbon-free energy. Their work supports industrial decarbonization and economic growth by harnessing heat and electricity in innovative ways. Additionally, they are advancing processes to extract radioisotopes for use in lifesaving cancer treatments.

TotalEnergies

A global integrated energy company that produces and markets energies: oil and biofuels, natural gas, biogas and low-carbon hydrogen, renewables and electricity. Our more than 100,000 employees are committed to provide as many people as possible with energy that is more reliable, more affordable and more sustainable. Active in about 120 countries, TotalEnergies places sustainability at the heart of its strategy, its projects and its operations.

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This article originally appeared on the Greater Houston Partnership's Houston Energy Transition Initiative blog. HETI exists to support Houston's future as an energy leader. For more information about the Houston Energy Transition Initiative, EnergyCapitalHTX's presenting sponsor, visit htxenergytransition.org.

Houston renewables developer lands $85M for nationwide solar projects

fresh funding

Houston-based Catalyze, a developer of independent power systems, announced it has secured an $85 million tax equity investment from RBC Community Investments.

“RBC’s investment in this portfolio demonstrates our commitment to advancing clean energy solutions within local communities,” Jonathan Cheng, managing director at RBC, said in a news release. “We are excited to partner with Catalyze on the strategic deployment of these and future projects.”

The financing will go toward the construction and completion of 75 megawatts of commercial and industrial solar projects nationwide in 2025. Catalyze’s current generation portfolio now totals 300 megawatts of projects in operations and construction.

The transaction will help Catalyze’s existing relationship with RBC, which demonstrates a commitment to advancing renewable energy solutions at scale.

“RBC is a valued financing partner, and we are pleased to further expand our relationship with this latest investment,” Jared Haines, CEO of Catalyze, said in a news release. “This financing enables us to further our mission to bring scalable distributed generation projects to businesses and communities nationwide.”

Catalyze also has other private equity sponsors in EnCap Investments and Actis.

Last May, Catalyze announced that it secured $100 million in financing from NY Green Bank to support a 79-megawatt portfolio of community distributed generation solar projects across New York state.