The Supreme Court will not hear an appeal from oil and gas companies. Photo by Getty Images

The Supreme Court said Monday, January 13, it won’t hear an appeal from oil and gas companies trying to block lawsuits seeking to hold the industry liable for billions of dollars in damage linked to climate change.

The order allows the city of Honolulu's lawsuit against oil and gas companies to proceed. The city's chief resilience officer, Ben Sullivan, said it's a significant decision that will protect "taxpayers and communities from the immense costs and consequences of the climate crisis caused by the defendants’ misconduct.”

The industry has faced a series of cases alleging it deceived the public about how fossil fuels contribute to climate change. Governments in states including California, Colorado and New Jersey are seeking billions of dollars in damages from things like wildfires, rising sea levels and severe storms. The lawsuits come during a wave of legal actions in the U.S. and worldwide seeking to leverage action on climate change through the courts.

The oil and gas companies appealed to the Supreme Court after Hawaii's highest court allowed the lawsuit to proceed. The companies include Sunoco, Shell, Chevron, Exxon Mobil and BP, many of which are headquartered in Texas.

The companies argued emissions are a national issue that should instead be fought over in federal court, where they've successfully had suits tossed out.

“The stakes in this case could not be higher," attorneys wrote in court documents. The lawsuits “present a serious threat to one of the nation’s most vital industries.”

The American Enterprise Institute, a conservative think tank, said declining to hear the Honolulu case now means the companies could face more lawsuits from activists trying to “make themselves the nation's energy regulators.”

“I hope that the Court will hear the issue someday, for the sake of constitutional accountability and the public interest,” said Adam White, a senior fellow at the institute.

The Democratic Biden administration had weighed in at the justices' request and urged them to reject the case, saying it's fair to keep it in state court at this point — though the administration acknowledged that the companies could eventually prevail.

The incoming Republican Trump administration is expected to take a sharply different view of environmental law and energy production.

Honolulu argued it's made a strong case under state laws against deceptive marketing and it should be allowed to play out there. “Deceptive commercial practices fall squarely within the core interests and historic powers of the states,” attorneings wrote.

Environmental regulations, meanwhile, have not always fared well overall before the conservative-majority court. In 2022, the justices limited the Environmental Protection Agency’s authority to regulate carbon dioxide emissions from power plants. In June, the court halted the agency’s air-pollution-fighting “good neighbor” rule.

Justice Samuel Alito recused himself from consideration of the appeal. He did not specify a reason, but he owns stock in companies affected by the lawsuits, according to his most recent financial disclosure.

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Houston climatech startup raises $29M funding round​

fresh funding

Houston-based NanoTech Materials has closed a $29.4 million Series A.

The round was led by Austin-based HPI Real Estate & Investments. Houston-based Goose Capital and Austin-based Milliken & Company also participated.

Nanotech has developed its patented Insulative Ceramic Particle (ICP) technology, which reduces heat transfer in buildings and outdoor infrastructure, improving efficiency and safety. It's known for its Cool Roof Coat, Wildfire Shield and Insulative Coat: Cool Touch product lines.

With the new funding, Nanotech plans to scale operations and expand its market reach for its products.

“We’re addressing one of the pressing and urgent challenges facing infrastructure owners today: controlling energy costs and extending asset life,” Mike Francis, CEO and co-founder of NanoTech Materials, said in a news release. “This financing marks a transformative moment for us. It allows us to rapidly scale production and bring our high-performance materials to market faster, while delivering measurable cost savings and redefining what resilience looks like in today’s built environment.”

Nanotech launched in 2020 and was the first company selected for Halliburton Labs. It moved into a 43,000-square-foot space in Katy in 2023. It brought on new partners that expanded the company's reach in the Middle East and Singapore the following year. Its technology was recognized as one of Time magazine's 200 Best Inventions of 2024.

“We were early investors in Nanotech Materials and are pleased to continue supporting the company as it becomes a leader in breakthrough materials science and technology,” John Chaney, investor at Goose Capital and board member at NanoTech, added in the release. “NanoTech’s ability to elevate fire resilience and energy efficiency in the built environment is critical for strengthening and hardening infrastructure. Its pioneered approach is transforming current building standards and making our lives safer.”

The company has secured $34.4 million in total to date, according to the release. It raised an oversubscribed funding round in 2023 and a $5 million seed round in 2020.

Houston clean energy startup acquired by battery storage company FlexGen

m&a activity

A North Carolina company has acquired Houston-based Clean Energy Services, a provider of services for battery energy storage systems and utility-scale solar, for an undisclosed amount.

The buyer is Durham, North Carolina-based FlexGen Power Systems, a provider of battery energy storage software and services.

Clean Energy Services (CES), whose offices are at the Ion, will operate as a subsidiary of FlexGen. Existing CES customers will continue to receive services from CES without disruption or change, FlexGen says.

“Demand for reliable, high-performance power is accelerating, and customers need partners who can deliver at scale,” Kelcy Pegler, CEO of FlexGen, said in a news release. “The addition of CES strengthens our service platform and reinforces our leadership in energy storage technology.”

Ahmad Atwan and Constantine Triantafyllides co-founded CES in 2022. As a startup, CES had raised $8 million in venture capital, according to PitchBook.

“CES has achieved a market leadership position in battery storage services by focusing on reliable speed of service delivery and optimizing asset performance,” Atwan, the company’s CEO, added the release. “FlexGen and CES have been strong partners for years, and this transaction enables us to deliver more robust solutions across a complementary set of customers and markets.”

CES will continue to operate its remote operations center in Houston for over 1 gigawatt of solar assets and 4.5 gigawatt-hours of battery assets, while FlexGen will maintain its remote operations center in Durham.

Halliburton Labs names 4 new clean energy startups to incubator

green team

Four new companies have joined Halliburton Labs, the incubator for early-stage energy and climate startups run by Houston energy giant Halliburton.

Halliburton Labs provides the emerging companies with mentorship, industry connections, laboratory access and other resources as they work toward commercialization, according to a news release.

The four new members include:

  • Nandina REM, a Singapore-based company that delivers carbon fiber thermoplastics. It turns end-of-life assets into new, reliable, high-performance materials for the aviation, aerospace and defense industries in a fraction of the time of standard supply chains.
  • Noon Energy, a California-based company that delivers clean, reliable electricity with ultra-long duration energy storage. Its system uses solid oxide electrochemical cells and stores energy as abundant, flexible industrial gases.
  • Proof Energy, a Silicon Valley-based company developed by the Lawrence Berkeley National Laboratory that is commercializing next-generation metallic solid oxide fuel cell (M-SOFC) technology. Its system uses widely available fuels such as ethanol, methanol, ammonia, and natural gas as hydrogen carriers to enable lower-cost, low-emission commercial transportation, and also offers a zero-emission heating solution to preserve battery range in electric vehicles.
  • Tidal Metals, a New Jersey-based company that has developed technology to economically make decarbonized magnesium metal from seawater and electricity.

"Halliburton Labs exemplifies our commitment to advance a secure and pragmatic energy future," Jeff Miller, chairman, president and CEO of Halliburton, said in the news release. "We welcome these companies into our ecosystem, where they will gain access to the tools, expertise, and connections needed to scale their technologies."

Auckland-based Aquafortus Technologies and California-based Sunchem joined Halliburton Labs in September. With the addition of the four new members, the incubator currently supports six early-stage companies.

Read more about the incubator's 2025 cohort here.