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. and Houston-based Calpine Corp. have entered into an agreement where Constellation will acquire Calpine in a cash and stock transaction with an overall net purchase price of $26.6 billion.

The companies say the agreement has the potential to create America’s “largest clean energy provider,” with what is reported to be the largest fleet of U.S. power stations servicing about 2.5 million customers.

“This is an incredible opportunity to bring together top tier generation fleets, leading retail customer businesses and the best people in our industry to help drive a stronger American economy for a cleaner, healthier and more sustainable future,” Andrew Novotny, president and CEO of Calpine, said in a news release.

Calpine is the largest U.S. producer of energy from low-emission natural gas generation and oversees the largest geothermal generation operation in the U.S. Last year it announced plans to build the Baytown Carbon Capture and Storage Project (Baytown CCS Project), a first-of-its-kind carbon capture demonstration facility, as part of a cost-sharing agreement with the U.S. Department of Energy.

Constellation is considered the top clean energy producer in the U.S., which provides 10 percent of the country’s emissions-free energy. The deal will add to Constellation’s already diverse portfolio of zero- and low-emission sources, including nuclear, natural gas, geothermal, hydro, wind, solar, cogeneration and battery storage.

“Both companies have been at the forefront of America’s transition to cleaner, more reliable and secure energy, and those shared values will guide us as we pursue investments in new and existing clean technologies to meet rising demand,” Joe Dominguez, president and CEO of Constellation, said the release. “What makes this combination even more special is it brings together two world-class teams, with the most talented women and men in the industry, who share a noble passion for safety, sustainability, operational excellence and helping America’s families, businesses and communities thrive and grow. We look forward to welcoming the Calpine team upon closing of this transaction.”

Constellation also announced that it will invest in adding more zero-emission energy to the grid to create “the most reliable generation portfolio in the U.S.” It plans to explore new advanced nuclear projects, invest in renewables and increase the output of existing nuclear plants.

“Together, we will be better positioned to bring accelerated investment in everything from zero-emission nuclear energy to battery storage that will power our economy in a way that puts people and our environment first,” Novotny said in a news release. “It’s a win for every American family and business in our newly combined footprint that wants clean and reliable energy. ECP’s commitment to these goals over the last seven years was critical to the progress we have made as a company and to laying a foundation for future growth.”

Houston power company Calpine announced plans to build the Baytown Carbon Capture and Storage Project, a carbon capture demonstration facility that aims to capture carbon dioxide from the Baytown Energy Center. Photo via DOE

First-of-its-kind, DOE-backed plant coming to Houston area

Carbon capture and storage

The first full-scale implementation of carbon capture and storage technology at a natural gas combined cycle power plant in the U.S. is coming to Baytown.

Houston power company Calpine announced plans to build the Baytown Carbon Capture and Storage Project (Baytown CCS Project), which is a carbon capture demonstration facility that aims to capture carbon dioxide from the Baytown Energy Center (BEC). The BEC is a natural gas combined-cycle power plant in Baytown.

The Department of Energy recently announced that it will share in the cost of up to $270 million on the Baytown project. The DOE revealed more details on the project on its website.

The project aims to utilize Shell’s CANSOLV point-source technology to capture up to 2 million metric tons of CO2 per year, which is equivalent to the annual emissions of nearly 450,000 gasoline-powered cars. In addition, the project plans to sequester the CO2 in saline storage sites on the Gulf Coast.

Evaluating the use of greywater cooling to minimize freshwater consumption by reusing wastewater, the project’s primary power and steam off-taker Covestro hopes to prove “technologies that showcase the benefits of decarbonized process heat and electricity in the industrial sector,” according to a news release.

In December of 2023, Calpine was selected by the Department of Energy's Office of Clean Energy Demonstrations for a cost-sharing agreement for a commercial-scale carbon capture and storage project.

"This is a critical step towards decarbonizing Calpine’s facility, which is located on our Covestro Baytown site,” Demetri Zervoudis, Covestro head of operations for North America and Baytown site general manager, said in a previous news release. “Carbon capture and storage technology is an important tool for the chemical industry to reduce carbon emissions, and it is encouraging to see Calpine at the forefront of this transition.”

The Baytown Decarbonization Project was developed collaboratively with local stakeholders in East Houston. According to the company, the project has already incorporated community feedback into the project designs to reduce non-CO2 air pollutants and minimize the usage of freshwater. The company estimates creating 22-26 permanent jobs and 1,500,000 hours of construction jobs and has partnerships with minority-serving institutions.

“Carbon capture is an important technology for decarbonizing the electricity sector and the economy,” Thad Hill, CEO of Calpine Corp said in 2023 when the DOE decided to work with the CSS program. “Calpine is very grateful for the commitment and support for the project by our stakeholders.”

Calpine’s Baytown Decarbonization Project will capture around two million metric tons of carbon dioxide for permanent sequestration each year. Photo via LinkedIn

DOE taps Houston company's facility to advance carbon capture, storage infrastructure

greenlight

Earlier this month, a Houston power company was selected by the Department of Energy's Office of Clean Energy Demonstrations for a cost-sharing agreement for a commercial-scale carbon capture and storage project.

Calpine's Baytown Decarbonization project is projected to capture and store about two million metric tons of carbon dioxide each year. The Baytown Energy Center is an existing 896-megawatt natural gas combined heat and power facility, according to a news release, "that provides steam and power to the adjacent Covestro chemicals manufacturing facility as well as power to the Texas electric grid."

The project will add post-combustion carbon capture equipment that will reduce the emissions intensity of two of its three combustion turbines at a design capture rate of 95 percent. In addition to the Baytown project, the DOE also selected Calpine’s carbon capture project at its Sutter Energy Center in California.

“We are very pleased and honored that the DOE has recognized the quality of this project and the strength of Calpine’s CCS program,” Thad Hill, CEO of Calpine Corp., says in the release. “We are looking forward to working with the DOE to finalize the cost-sharing agreement and with our other stakeholders to advance the development of the Baytown Decarbonization Project. Carbon capture is an important technology for decarbonizing the electricity sector and the economy. Calpine is very grateful for the commitment and support for the project by our stakeholders.”

The Baytown Decarbonization Project is being developed collaboratively with local stakeholders in East Houston. In addition to expanding full-time job opportunities, Calpine will enhance workforce development programs, target procurement with diverse and small business enterprises, and work with local schools and other organizations.

"This is a critical step towards decarbonizing Calpine’s facility, which is located on our Covestro Baytown site,” Demetri Zervoudis, Covestro head of operations for North America and Baytown site general manager, says in the release. “Carbon capture and storage technology is an important tool for the chemical industry to reduce carbon emissions, and it is encouraging to see Calpine at the forefront of this transition.”

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Innovative Houston clean hydrogen company expands to Brazil

on the move

Houston biotech company Cemvita has expanded into Brazil. The company officially established a new subsidiary in the country under the same name.

According to an announcement made earlier this month, the expansion aims to capitalize on Brazil’s progressive regulatory framework, including Brazil’s Fuel of the Future Law, which was enacted in 2024. The company said the expansion also aims to coincide with the 2025 COP30, the UN’s climate change conference, which will be hosted in Brazil in November.

Cemvita utilizes synthetic biology to transform carbon emissions into valuable bio-based chemicals.

“For decades Brazil has pioneered the bioeconomy, and now the time has come to create the future of the circular bioeconomy,” Moji Karimi, CEO of Cemvita, said in a news release. “Our vision is to combine the innovation Cemvita is known for with Brazil’s expertise and resources to create an ecosystem where waste becomes opportunity and sustainability drives growth. By joining forces with Brazilian partners, Cemvita aims to build on Brazil’s storied history in the bioeconomy while laying the groundwork for a circular and sustainable future.”

The Fuel of the Future Law mandates an increase in the biodiesel content of diesel fuel, starting from 15 percent in March and increasing to 20 percent by 2030. It also requires the adoption of Sustainable Aviation Fuel (SAF) and for domestic flights to reduce greenhouse gas emissions by 1 percent starting in 2027, growing to 10 percent reduction by 2037.

Cemvita agreed to a 20-year contract that specified it would supply up to 50 million gallons of SAF annually to United Airlines in 2023.

"This is all made possible by our innovative technology, which transforms carbon waste into value,” Marcio Da Silva, VP of Innovation, said in a news release. “Unlike traditional methods, it requires neither a large land footprint nor clean freshwater, ensuring minimal environmental impact. At the same time, it produces high-value green chemicals—such as sustainable oils and biofuels—without competing with the critical resources needed for food production."

In 2024, Cemvita became capable of generating 500 barrels per day of sustainable oil from carbon waste at its first commercial plant. As a result, Cemvita quadrupled output at its Houston plant. The company had originally planned to reach this milestone in 2029.

Capitalism and climate: How financial shifts will shape our behavior

guest column

I never imagined I would see Los Angeles engulfed in flames in this way in my lifetime. As someone who has devoted years to studying climate science and advocating for climate technology solutions, I'm still caught off guard by the immediacy of these disasters. A part of me wants to believe the intensifying hurricanes, floods, and wildfires are merely an unfortunate string of bad luck. Whether through misplaced optimism or a subconscious shield of denial, I hadn't fully processed that these weren't just harbingers of a distant future, but our present reality. The recent fires have shattered that denial, bringing to mind the haunting prescience of the movie Don't Look Up. Perhaps we aren't as wise as we fancy ourselves to be.

The LA fires aren't an isolated incident. They're part of a terrifying pattern: the Canadian wildfires that darkened our skies, the devastating floods in Spain and Pakistan, and the increasingly powerful hurricanes in the Gulf. A stark new reality is emerging for climate-vulnerable cities, and whether we acknowledge the underlying crisis or not, climate change is making its presence felt – not just in death and destruction, but in our wallets.

The insurance industry, with its cold actuarial logic, is already responding. Even before the recent LA fires, major insurers like State Farm and Allstate had stopped writing new home policies in California, citing unmanageable wildfire risks. In the devastated Palisades area, 70% of homes had lost their insurance coverage before disaster struck. While some homeowners may have enrolled in California's limited FAIR plan, others likely went without coverage. Now, the FAIR plan faces $5.9 billion in potential claims, far exceeding its reinsurance backup – a shortfall that promises delayed payments and costlier coverage.

The insurance crisis is reverberating across the nation, and Houston sits squarely in its path. As a city all too familiar with the destructive power of extreme weather, we're experiencing our own reckoning. The Houston Chronicle recently reported that local homeowners are paying a $3,740 annually for insurance – nearly triple the national average and 60% higher than the Texas state average. Our region isn't just listed among the most expensive areas for home insurance; it's identified as one of the most vulnerable to climate hazards.

For Houston homeowners, Hurricane Harvey taught us a harsh lesson: flood zones are merely suggestions, not guarantees. The next major hurricane won't respect the city's floodplain designations. This reality poses a sobering question: Would you risk having your largest asset – your home – uninsured when flooding becomes increasingly likely in the next decade or two?

For most Americans, home equity represents one of the largest components of household wealth, a crucial stepping stone to financial security and generational advancement. Insurance isn't just about protecting physical property; it's about preserving the foundation of middle-class economic stability. When insurance becomes unavailable or unaffordable, it threatens the very basis of financial security for millions of families.

The insurance industry's retreat from vulnerable markets – as evidenced by Progressive and Foremost Insurance's withdrawal from writing new policies in Texas – is more than a business decision. It's a market signal. These companies are essentially pricing in the reality of climate change, whether we choose to call it that or not.

What we're witnessing is the market beginning to price us out of areas where we've either built unsustainably or perhaps should never have built at all. This isn't just about insurance rates; it's about the future viability of entire communities and regional economies. The invisible hand of the market is doing what political will has failed to do: forcing us to confront the true costs of our choices in a warming world.

Insurance companies aren't the only ones sounding the alarm. Lenders and investors are quietly rewriting the rules of capital access based on climate risk. Banks are adjusting mortgage terms and raising borrowing costs in vulnerable areas, while major investment firms are factoring carbon intensity into their lending decisions. Companies with higher environmental risks have faced higher loan spreads and borrowing costs – a trend that's accelerating as climate impacts intensify. This financial reckoning is creating a new economic geography, where access to capital increasingly depends on climate resilience.

The insurance crisis is the canary in the coal mine, warning us of the systemic risks ahead. As actuaries and risk managers factor climate risks into their models, we're seeing the beginning of a profound economic shift that will ripple far beyond housing, affecting businesses, agriculture, and entire regional economies. The question isn't whether we'll adapt to this new reality, but how much it will cost us – in both financial and human terms – before we finally act.

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Nada Ahmed is the founding partner at Houston-based Energy Tech Nexus.

Houston renewables developer powers two new California solar parks

now open

EDP Renewables North America LLC, a Houston-based developer, owner, and operator of renewable energy projects, has unveiled a solar energy park in California whose customers are Houston-based Shell Energy North America and the Eureka, California-based Redwood Coast Energy Authority.

Sandrini I & II Solar Energy Park, located near Bakersfield, is capable of supplying 300 megawatts of power. The park was completed in two phases.

“Sandrini I & II represent EDP Renewables’ continued commitment to investing in California and are a direct contribution to California's admirable target of achieving 100 percent clean electricity by 2045,” says Sandhya Ganapathy, CEO of EDP. “The Golden State is known for its leadership in solar energy, and EDP Renewables is elated to meet the growing demand for reliable clean energy sources.”

Shell signed a 15-year deal to buy power from the 200-megawatt Sandrini I, and the Redwood Coast Energy Authority signed a 15-year deal to buy power from the 100-megawatt Sandrini II.

In July, EDP announced the opening of the 210-megawatt Pearl River Solar Park in Mississippi. Earlier in 2024, the company debuted the 175-megawatt Crooked Lake Solar Park in Arkansas and the 74-megawatt Misenheimer Solar Park in North Carolina. Click here to read more.