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Constellation and Calpine's $26B clean energy megadeal clears final regulatory hurdle

big deal

Houston's Calpine Corp. will be acquired by Baltimore-based nuclear power company Constellation Energy Corp. Photo via DOE

Baltimore-based nuclear power company Constellation Energy Corp. received final regulatory clearance this month to acquire Houston-based Calpine Corp. for a net purchase price of $26.6 billion.

The acquisition has the potential to create America’s “largest clean energy provider,” the companies reported when the deal was first announced in January.

The Department of Justice approved the acquisition contingent on Calpine divesting several assets, including one in the Houston area.

The company agreed to divest the Jack Fusco Energy Center natural gas-fired combined cycle facility in Richmond, Texas; four generating assets in the Mid-Atlantic region; and other natural gas plants in Pennsylvania and Corpus Christi, Texas.

The Federal Energy Regulatory Commission, the Public Utility Commission of Texas and the New York Public Service Commission previously approved the deal. The companies can move toward closing the acquisition once the court finalizes the stipulation and order.

"We are very pleased to reach a settlement that allows us to bring together two magnificent companies to create a new Constellation with unprecedented scale, talent and capability to better serve our customers and communities while building the foundation for America’s next great era of growth and innovation," Joe Dominguez, president and CEO of Constellation, said in a news release. "We thank the Department for its professionalism and tireless work reviewing this transaction through these many months. It’s now time for us to complete the transaction, welcome our new colleagues from Calpine, and together begin our journey to light the way to a brilliant tomorrow for all."

Andrew Novotny, CEO of Calpine, will continue to lead the Calpine business and Constellation's fleet of natural gas, hydro, solar and wind generation, according to the company. He will report to Dominguez and also serve as senior executive vice president of Constellation Power Operations.

Constellation is considered one of the top clean energy producers in the U.S. Earlier this month, the company was approved to receive a $1 billion loan from the Department of Energy's Energy Dominance Financing Program to restart its 835-megawatt nuclear reactor in Pennsylvania known as Crane Clean Energy Center.

"Work to restart the reactor comes at a time of unprecedented electric demand growth from electrification and the new data centers needed to support a growing digital economy and to help America win the AI race," a news release from the company reads. "Crane will support grid stability by delivering reliable, around-the-clock electric supply."

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The Department of Energy has axed federal funding for Houston-area clean energy projects from ExxonMobil, Calpine and Ørsted. Photo via exxonmobil.com

Houston-area clean energy projects lose more than $700M in federal funds

funding cut

The federal government has canceled more than $700 million in funding for three clean energy projects in the Houston area.

In all, the U.S. Department of Energy (DOE) recently wiped out $3.7 billion in funding for 24 carbon capture and decarbonization projects across the country.

Houston-area projects that took a hit are:

It’s unclear how the loss of federal funding will affect the three Houston-area projects.

All $3.7 billion from the DOE was awarded in 2024 and 2025 during the Biden administration—in some cases days before President Trump took office.

“While the previous administration failed to conduct a thorough financial review before signing away billions of taxpayer dollars, the Trump administration is doing our due diligence to ensure we are utilizing taxpayer dollars to strengthen our national security, bolster affordable, reliable energy sources, and advance projects that generate the highest possible return on investment,” U.S. Energy Secretary Chris Wright said in a release.

Advocates for clean energy sharply criticized the DOE’s action:

  • Jessie Stolark, executive director of the Carbon Capture Coalition, said cancellation of the 24 DOE-funded projects “is a major step backward in the nationwide deployment of carbon management technologies. It is hugely disappointing to see these projects canceled — projects that had already progressed through a rigorous, months-long review process by technical experts at DOE.”
  • Iliana Paul, deputy director for the Sierra Club’s industrial transformation campaign, complained that the Trump administration “killed dozens of major investments in American competitiveness, good jobs, and cleaner air to support Trump’s tax cuts and line the pockets of billionaires. These projects were not just pro-climate; they were pro-jobs, pro-innovation, and pro-public health. American workers, fenceline communities, and forward-thinking companies have had the rug pulled out from under them.”
  • Conrad Schneider, senior U.S. director of the Clean Air Taskforce, said the DOE’s move “is bad for U.S. competitiveness in the global market and also directly contradictory to the administration’s stated goals of supporting energy production and environmental innovation. Canceling cutting-edge technology demonstrations, including support for carbon capture and storage projects, undercuts U.S. competitiveness at a time when there is a growing global market for cleaner industrial products and technologies.”
ExxonMobil has agreed to transport CO2 from Calpine Corp.’s Baytown Energy Center. Photo via Getty Images.

Exxon expands CO2 storage network with Calpine agreement

power deal

ExxonMobil Corp. has agreed to transport and permanently store up to 2 million metric tons per year of CO2 from Calpine Corp.’s Baytown Energy Center.

The strategic agreement is part of Calpine’s Baytown Carbon Capture and Storage (CCS) Project, which is designed to capture the energy center’s CO2 emissions and enable the supply of low-carbon electricity. It’s also in line with Exxon’s broader strategy to expand its CCS infrastructure along the Gulf Coast.

“Calpine is excited to partner with ExxonMobil to achieve this important project milestone,” Caleb Stephenson, Calpine Executive Vice President, said in a news release. “As the largest U.S. generator of electricity from natural gas, we understand that the nation’s gas fleet will remain the backbone of the grid for decades to come. We believe CCS is an actionable and cost-effective way to meet customers' demand for reliable power and alleviate concerns about the indisputable long-term need for gas-fired facilities. Low-cost natural gas along with carbon capture technology and widespread geologic storage resources can bolster U.S. energy, natural gas use, jobs, and export strength.”

The Baytown CCS Project is expected to produce about 500 megawatts of low-carbon electricity, which Calpine said is enough to power more than 500,000 homes. It can also provide steam for nearby industrial purposes.

The project anticipates creating construction and other full-time jobs, with engineering, permitting, and other development activities coming soon.

"We’re thrilled to work with Calpine on this project that supports American energy security, enhances industrial competitiveness and leverages America’s abundant low-cost natural gas resources," Barry Engle, President of ExxonMobil Low Carbon Solutions, said in a news release. “This agreement underscores the growing confidence our customers across diverse sectors—including steel, fertilizer, industrial gases, natural gas processing, and now power generation—have in our unique end-to-end CCS system.”

This is ExxonMobil’s sixth CCS customer, bringing the company's total amount of CO2 under contract to approximately 16 million tons a year, according to the company. The CO2 from Calpine’s facility will tie into ExxonMobil’s CO2 pipeline system on the Gulf Coast.

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Solid-state generator company secures $9M in financing, names CTO

fresh financing

ATS Energy has secured a $9 million investment to help commercialize its solid-state generator technology, a representative from the company tells Energy Capital.

The Colorado-based company is a member of Houston's Greentown Labs climatech community and was named the second most-promising startup in the Innovations for Traditional Energy, Electricity, & the Grid track during CERA Week's Energy Venture Day and Pitch Competition in March.

ATS's technology converts industrial waste heat into electricity via its proprietary thermoelectric cartridges, according to a news release. The cartridges convert the otherwise wasted thermal energy directly into usable electricity with no turbine, no moving parts and no emissions.

"We have spent years building a proven track record of breakthrough technology," Doug Hudson, CEO of ATS Energy, said in the release. "What has developed over the past year is that markets are moving toward ATS Energy, said in the release. We've moved well beyond early interest to commercial commitments, active proposals and a pipeline that continues to expand across multiple industrial sectors. That puts us in a tremendous position to meet the moment in delivering energy to industry. This investment responds to real commercial opportunity, and it positions ATS Energy to scale production, meet customer demand faster, and drive commercial deployments."

According to the release, ATS plans to complete and deploy its first commercial generator using the thermoelectric cartridges by mid-2027. The company shared that it plans to begin revenue-generating operations next year, as well.

ATS has also named Edward Ganja as its new CTO. Ganja previously served as a technology advisor for ATS and spent more than 30 years at Shell, most recently as vice president of catalyst and analytical technology in Houston, according to LinkedIn.

"Having worked closely with the team as a Technology Adviser, I am thrilled to step into the Chief Technology Officer role to lead our technology strategy and advanced materials scale-up," Ganja shared in a LinkedIn post. "ATS is tackling crucial energy challenges, and I look forward to working with our talented team, partners, and industry colleagues to accelerate our commercial development and technological footprint."

A representative from the company shares that ATS has three employees in Texas, including two in Houston. The company is targeting industrial facilities, including Gulf Coast refineries and petrochemical plants, for its production model, which will leverage established manufacturing capabilities to help quickly scale its commercial pipeline.

"We are scaling manufacturing with the discipline required for commercial-grade industrial deployment, moving beyond proof-of-concept to deliver mission-critical equipment," Terry Hill, COO of ATS, added in the release. "We've been building the supply chain, identifying the right manufacturing partners and putting the processes in place to move toward repeatable production. By leveraging contract manufacturing, we can focus our capital on the technology, the product and our customers rather than building factories. Just as importantly, we're working to reduce the time between installations so we can respond to the demand we're seeing in the market."

ATS won the prestigious Earthshot Prize in the Fix Our Climate category in 2024. The Earthshot Prize, founded by Prince William, awards £1 million to five energy startups each year over a decade.

Trump says he's ending restrictions on methane emissions from oil drilling

In the News

President Donald Trump said Tuesday that his administration is “terminating” a Biden-era rule that aimed to cut planet-warming emissions of methane from oil and gas drilling.

Trump said during a campaign rally in Texas that the change would save companies and consumers billions of dollars and unlock 210 million barrels of oil. That’s equivalent to about 10 days of U.S. petroleum consumption.

The move aims to encourage more domestic drilling as Trump faces criticism over high fuel prices amid the war in Iran.

Methane is responsible for about a third of planet-warming greenhouse gas emissions, scientists estimate.

Cuts in methane emissions have emerged in recent years as a global priority to slow the rate of climate change. Oil and gas operations are the largest industrial source of methane, which is the main component in natural gas and far more potent to the atmosphere than carbon dioxide in the short term.

The invisible gas leaks from equipment and is released into the atmosphere or burned off as a waste product by oil drillers.

Environmental Protection Agency Administrator Lee Zeldin previewed the changes last month, saying they would eliminate the agency’s “Super Emitter Program” that requires companies to investigate and repair major methane releases from oil and natural gas facilities. The agency would also set less restrictive standards for small oil and gas wells.

Trump said during Tuesday's rally in Lubbock for Texas Republican Senate candidate Ken Paxton that Biden's plan “crushed the small operators” with crippling regulations.

“I’m officially terminating Biden’s expensive and unnecessary methane regulations to save consumers and energy producers $45 billion in costs,” Trump said.

The loosening of the emissions rule comes as Trump and Republicans in Congress have been methodically dismantling climate policies enacted under former President Joe Biden. That's included the revocation of a scientific finding that was central to U.S. action on greenhouse gas emissions, lower fuel economy standards for vehicles and a move to repeal emission restrictions for coal and natural gas power plants.

Environmental groups said the latest rollback will let companies continue polluting the atmosphere with gas that could be captured and provide energy to millions of households.

Environmental Defense Fund President Fred Krupp said it gives a “free pass” to companies at the expense of American consumers.

“EPA should be fighting this waste, not making it easier,” he said.

Zeldin has said the methane rule would have cost $18 billion and was holding back the U.S. energy industry.

The Biden methane rule was announced by officials including former Vice President Kamala Harris during a 2023 U.N. climate conference in the United Arab Emirates.

Federal officials under Biden said it would prevent an estimated 58 million tons (52.6 million metric tonnes) of methane emissions by 2038 and reduce other pollutants that cause health problems.

By 2034, the rule was projected to yield $98 billion in benefits. That figure was derived by calculating the future “social costs” of greenhouse gas emissions on public health and the environment, an approach rejected by Trump's EPA.

While previous regulations focused only on new oil and gas wells in the U.S., the Biden rule regulated existing wells. Operators also would have needed to plug leaking methane from smaller wells that produce just 6% of the nation’s oil and gas while accounting for up to half of all methane emissions from oil and gas fields.

The final rule was published in 2024. The EPA last year imposed an 18-month delay to give companies time to meet new inspection requirements and other provisions.

The rule was crafted to be coordinated with a methane fee, approved in the 2022 climate law. The fee program would have levied a “waste emissions charge” of as much as $1,500 per metric ton of methane on energy producers that exceed a certain level of methane emissions.

The fee marked the first time the U.S. government directly imposed a fee, or tax, on greenhouse gas emissions. Congress repealed it weeks after Trump took office.

Officials also tried to rein in methane from oil and gas under former President Barack Obama, but that effort was scaled back during Trump's first term.

Houston energy company expands battery storage deal with Samsung

battery boost

Houston-based Alpha Omega Power, which develops, invests in and runs utility-scale battery energy storage systems, has signed a deal to add more storage capacity from a subsidiary of South Korean tech giant Samsung.

The latest deal adds 1 gigawatt-hour of storage capacity to Alpha Omega’s existing contract with Samsung SDI America, bringing total storage capacity to 1.5 gigawatts.

The Michigan-based Samsung subsidiary is manufacturing the systems’ cells and modules at a plant in Indiana, Alpha Omega said. Samsung SDI plans to deliver them by the end of this year.

“This second agreement strengthens our domestic supply chain supporting the next generation of energy infrastructure,” Paul Choi, CEO of Alpha Omega, said in a press release.

Houston-based Fengate Asset Management owns Alpha Omega. In 2023, they formed a partnership to build, acquire, and operate utility-scale battery energy storage projects in the U.S. Their 200-megawatt Vertus battery facility in Galveston County came online this month.

Alpha Omega plans to use the Samsung SDI systems to improve grid reliability and meet greater demand for power in markets served by the Electric Reliability Council of Texas (ERCOT) and the Salt Lake City-based Western Electricity Coordinating Council.

ERCOT covers 90 percent of power customers in Texas. The Western Interconnection grid covers all or part of 14 states, as well as parts of Canada and Mexico.

Samsung SDI is the only non-Chinese supplier of rigid-metal “prismatic” energy storage batteries in North America, according to Alpha Omega.

“With strong durability and fire safety compared with pouch-type batteries, its prismatic batteries have helped the company meet the stringent requirements of U.S. energy companies,” Alpha Omega said.

The Samsung Battery Box 1.7 equipment being purchased by Alpha Omega offers AI-powered algorithms and 25 years of continuous use, along with greater energy density than its predecessor. It also features the ability to directly inject fire-extinguishing agents on a module-by-module basis.

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