Houston clean energy startup acquired by battery storage company FlexGen

m&a activity

Houston-based Clean Energy Services will operate as a subsidiary of FlexGen. Photo via flexgen.com

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.

From Your Site Articles

Devon Energy will buy Houston-based Coterra Energy. Photo via Coterra Energy

$21.5 billion merger will create Houston-based energy powerhouse

Major Merger

Oklahoma City, Oklahoma-based Devon Energy has agreed to buy Houston-based Coterra Energy in a $21.5 billion all-stock deal, forming an energy powerhouse that will be headquartered in Houston. The combined company, boasting an enterprise value of $58 billion, will adopt the Devon brand name.

Revenue for the two publicly traded companies totaled nearly $18.8 billion in the first nine months of 2025. Devon is a Fortune 500 company, but Coterra doesn’t appear in the most recent ranking.

The deal, already approved by the boards of both companies, is expected to close in the second quarter of 2026. Once the transaction is completed, Devon shareholders will own about 54 percent of the combined company and Coterra shareholders will own 46 percent.

“This transformative merger combines two companies with proud histories and cultures of operational excellence, creating a premier shale operator,” says Clay Gaspar, Devon’s president and CEO.

The combined company will be one of the world’s largest shale producers, with third-quarter 2025 production exceeding 550 thousand barrels of oil per day and 4.3 billion cubic feet of gas per day. A significant presence in the Delaware Basin, encompassing hundreds of thousands of acres, will anchor the company’s operations. The 10,000-square-mile Delaware Basin is in West Texas and southeastern New Mexico.

The new Devon also will operate in the Permian Basin, located in West Texas and New Mexico; Marcellus Shale, located in five states in the East; and Anadarko Basin, located in the Texas Panhandle, Colorado, Kansas, and Oklahoma.

Gaspar will be president and CEO of the combined company, and Tom Jorden, chairman, president, and CEO of Coterra, will be non-executive chairman.

In January 2025, Constellation Energy Corp. announced plans to acquire Houston's Calpine Corp. Photo via LinkedIn

6 major acquisitions that fueled the Houston energy sector in 2025

2025 In Review

Editor's note: As 2025 comes to a close, we're revisiting the biggest headlines and major milestones of the energy transition sector this year. Here are six major acquisitions that fueled the Houston energy industry in 2025:

Houston-based Calpine Corp. to be acquired in clean energy megadeal

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

In January 2025, Baltimore-based nuclear power company Constellation Energy Corp. and Houston-based Calpine Corp. entered into an agreement where Constellation would acquire Calpine in a cash and stock transaction with an overall net purchase price of $26.6 billion. The deal received final regulatory clearance this month.

Investment giant to acquire TXNM Energy for $11.5 billion

Blackstone Infrastructure, an affiliate of Blackstone Inc., will acquire a major Texas electricity provider. Photo via Shutterstock

In May 2025, Blackstone Infrastructure, an investment giant with $600 million in assets under management, agreed to buy publicly traded TXNM Energy in a debt-and-stock deal valued at $11.5 billion. The deal recently cleared a major regulatory hurdle, but still must be approved by the Public Utility Commission of Texas.

Houston's Rhythm Energy expands nationally with clean power acquisition

PJ Popovic, founder and CEO of Houston-based Rhythm Energy, which has acquired Inspire Clean Energy. Photo courtesy of Rhythm

Houston-based Rhythm Energy Inc. acquired Inspire Clean Energy in June 2025 for an undisclosed amount. The deal allowed Rhythm to immediately scale outside of Texas and into the Northeast, Midwest and mid-Atlantic regions.

Houston American Energy closes acquisition of New York low-carbon fuel co.

Houston American Energy Corp. has acquired Abundia Global Impact Group, which converts plastic and certified biomass waste into high-quality renewable fuels. Photo via Getty Images.

Renewable energy company Houston American Energy Corp. (NYSE: HUSA) acquired Abundia Global Impact Group in July 2025. The acquisition created a combined company focused on converting waste plastics into high-value, drop-in, low-carbon fuels and chemical products.

Chevron gets green light on $53 billion Hess acquisition

With the deal, Chevron gets access to one of the biggest oil finds of the decade. Photo via Chevron

In July 2025, Houston-based Chevron scored a critical ruling in Paris that provided the go-ahead for a $53 billion acquisition of Hess and access to one of the biggest oil finds of the decade. Chevron completed its acquisition of Hess shortly after the ruling from the International Chamber of Commerce in Paris.

Investors close partial acquisition of Phillips 66 subsidiary with growing EV network

Two investment firms have scooped up the majority stake in JET, a subsidiary of Phillips 66 with a rapidly growing EV charging network. Photo via Jet.de Facebook.

In December 2025, Energy Equation Partners, a London-based investment firm focused on clean energy companies, and New York-based Stonepeak completed the acquisition of a 65 percent interest in JET Tankstellen Deutschland GmbH, a subsidiary of Houston oil and gas giant Phillips 66.

Two investment firms have scooped up the majority stake in JET, a subsidiary of Phillips 66 with a rapidly growing EV charging network. Photo via Jet.de Facebook.

Investors close partial acquisition of Phillips 66 subsidiary with growing EV network

M&A activity

Energy Equation Partners, a London-based investment firm focused on clean energy companies, and New York-based Stonepeak have completed the acquisition of a 65 percent interest in JET Tankstellen Deutschland GmbH, a subsidiary of Houston oil and gas giant Phillips 66.

JET is one of the largest and most popular fuel retailers in Germany and Austria with a rapidly growing EV charging network, according to a news release. It also operates approximately 970 service stations, convenience stores and car washes.

“We are delighted to complete this acquisition and to partner with Stonepeak and Phillips 66 to take JET to the next level,” Javed Ahmed, managing partner of Energy Equation Partners, said in a news release. “This investment reflects EEP’s commitment to investing in established players in the energy sector who have the potential to make a meaningful impact on the energy transition, and we are excited to work alongside the entire JET team, including its dedicated service station operators, to realize this vision.”

The deal values JET at approximately $2.8 billion. Phillips 66 will retain a 35 percent non-operated interest in JET and received about $1.6 billion in pre-tax proceeds.

“Under Phillips 66’s ownership, JET has grown into one of the largest fuel retailers in Germany and Austria," Anthony Borreca, senior managing director and co-head of energy at Stonepeak, added in a news release. "We are excited to join forces with them, as well as Javed and the EEP team, who have long-standing experience investing in and operating retail fuel distribution and logistics globally, to support the next phase of JET’s growth.”

Acquisitions, consolidations, divestitures — here's what news of energy transition deals in Houston trended this year. Photo via Getty Images

M&A moves: Most trending Houston energy transition news on big deals from 2024

year in review

Editor's note: As the year comes to a close, EnergyCapital is looking back at the year's top stories in Houston energy transition. From acquisitions to consolidations, this year marked a big one for some of Houston's energy companies. Here were the top five most-read articles covering deals of 2024 — be sure to click through to read the full story.

PE firm acquires Houston renewables fuels infrastructure company

Ara Partners announced this week that it has acquired a majority interest in Houston-based USD Clean Fuels. Image via Shutterstock.

Fresh off its $3 billion fund closure, a Houston private equity firm has made its latest acquisition.

Ara Partners announced this week that it has acquired a majority interest in Houston-based USD Clean Fuels, a developer of logistics infrastructure for renewable fuels. The terms of the deal were not disclosed.

"We have high conviction that the green molecules economy – whether it's renewable fuel feedstocks or biofuels – offers disproportionate opportunity for returns and impact," George Yong, partner and co-head of Infrastructure at Ara Partners, says. Continue reading.

McKinsey acquires Houston-area co. to enhance sustainability services

According to McKinsey data, more than $3.5 trillion will be invested in green hydrogen, carbon capture, renewable energy, and other projects that are working toward net-zero transition by 2050. Photo via ses-estimating.com

A global management consulting company has executed on an acquisition key to its plans amid the energy transition.

McKinsey & Company announced the acquisition of Strategic Estimating Systems, a Sugar Land-based consulting firm specializing in cost estimation for oil, gas, and chemical process industries. The acquisition provides McKinsey with enhanced benchmarking capabilities across capital project management — especially within the energy transition.

The terms of the deal were not disclosed.

"The capital projects ecosystem is presented with a once-in-a-generation chance to aid in transforming economies to achieve net zero," Justin Dahl, partner and global leader of McKinsey & Company's Capital Analytics, says. Continue reading.

Houston chemical company divests new tech arm to PE

Merichem Company has created a new business unit that's been acquired by a private equity firm. Photo via Getty Images

A New Orleans-based private equity firm has announced the acquisition of a Houston chemical company's technology business unit, the business announced today.

Black Bay Energy Capital acquired a portion of Merichem Company’s business — including its Merichem Process Technologies and Merichem Catalyst Products, which will collectively be renamed Merichem Technologies. Merichem's caustic services business, which handles spent caustic for beneficial reuse, will be maintained by the company.

Cyndie Fredrick has been promoted to CEO of Merichem Technologies. She previously served as Merichem's senior vice president and general manager of Merichem Process Technologies. She's joined by CFO Rene Campos, Senior Vice President of Technology Jeff Gomach, and Senior Vice President of Catalysts William Rouleau, who are all former managers within Merichem.

“The Merichem Technologies team has successfully deployed highly engineered and patented technologies, chemical catalysts, and mechanical solutions to various end markets including liquified natural gas, midstream oil and gas, refining of traditional crude and renewable feedstocks, biogas/landfill/RNG production, geothermal energy production, and chemical manufacturing," Fredrick says. Continue reading.

SLB to consolidate carbon capture business in partnership

The combined technology portfolios will accelerate the introduction of promising early-stage decarbonization technology. Photo via Getty Images

SLB announced its plans to combine its carbon capture business with Norway company, Aker Carbon Capture.

Upon completion of the transaction, which is expected to close by the end of the second quarter of this year, SLB will own 80 percent of the combined business and ACC will own 20 percent.

According to a SLB news release, the combined technology portfolios will accelerate the introduction of promising early-stage decarbonization technology.

“For CCUS to have the expected impact on supporting global net-zero ambitions, it will need to scale up 100-200 times in less than three decades,” Olivier Le Peuch, CEO of SLB, says. Continue reading.

Houston-based co. closes acquisition of 50 percent stake in Texas cogeneration facility

Fengate has completed the acquisition of a 50 percent stake in a Texas cogeneration facility, which supplies power and steam to a major industrial site. Photo via Fengate

Fengate Asset Management announced the financial close on the acquisition of a 50 percent interest in Freeport Power Limited, which owns a 440-megawatt cogeneration facility in Freeport, Texas.

FPL is located near the Freeport Energy Center, which is a 260-megawatt cogeneration facility that is currently owned and managed by Fengate. The two facilities work to provide cost-effective power and steam to Dow’s Freeport site, which is the largest integrated chemical manufacturing complex in the Western Hemisphere.

“We are thrilled to have closed this acquisition, which aligns with our strategy of acquiring behind-the-meter cogeneration projects with strong industrial partners like Dow,” Greg Calhoun, managing director of Infrastructure Investments at Fengate, says. Continue reading.

Ian Goldberg joins the Houston office of Akin. Photo via akingump.com

Law firm's Houston office expands energy expertise

new hire

Leading adviser to energy companies, Akin Gump Strauss Hauer & Feld, has announced a new energy transactions partner in the firm’s Houston office.

Ian Goldberg will advise clients on various energy transactions, which will include project development, mergers and acquisitions, divestitures, and financial transactions that will involve oil and gas assets, energy transition investments and rare earth mineral deposits.

He previously led the energy transactions practice at Hunton Andrews Kurth.

“Akin has a top-tier integrated platform across the entire energy value chain,” Goldberg says in a news release.” I’m excited to be joining a growing and dynamic team.”

He will be joining recent additions to Akin’s energy practice that include projects & energy transition partners Ike Emehelu (New York), Alex Harrison, Matt Hardwick and Dan Giemajner (London), energy regulatory partners Emily Mallen and Stephen Hug (Washington, D.C.), tax equity partner Sam Guthrie (Washington, D.C.) and projects & energy transition partner Vanessa Richelle Wilson (Washington, D.C.)..

“Ian adds depth to our energy team with extensive experience in the onshore and offshore upstream and midstream sectors, and his current representation of clients in the carbon capture, utilization & storage and hydrogen spaces further strengthens our growing projects & energy transition practice,” corporate practice co-head Zachary Wittenberg adds in the release.

Ad Placement 300x100

Ad Placement 300x600

CultureMap Emails are Awesome

Property Showcase

Report shows geoscientists earn largest salary premium in Texas

Career Day

A move to Texas bolsters earnings for some, and a new SmartAsset study has revealed the top professions where the median annual earnings in the Lone Star State exceed the national median.

The report, "When it Pays to Work in Texas — and When It Doesn’t," published in April, analyzed over 700 occupations to determine which have the biggest "Texas premium" — meaning jobs where the price-adjusted median annual pay in Texas most exceeds the national median for the same occupation — and which jobs have the biggest “Texas penalty,” where the statewide median annual pay falls furthest below the national median. Salaries were sourced from the U.S. Bureau of Labor Statistics (BLS) and adjusted for regional price parity.

According to the report's findings, geoscientists have the biggest "Texas premium" and make a $159,903 median annual salary. Texas' salary for geoscientists is 61 percent higher than the national median for the same position (after adjusting for regional price parity).

"Texas’s large petroleum industry helps explain why employers in the state retain so many geoscientists," the report's author wrote. "In fact, the Lone Star State is home to more geoscientists than any other state except California."

There are more than 3,600 geoscientists working in Texas, SmartAsset said.

These are the remaining top 10 occupations with the biggest "Texas premiums" (salaries are price-adjusted):

No. 2 – Commercial pilots: $167,727 median Texas earnings; 37 percent higher than the national median
No. 3 – Sailors: $67,614 median Texas earnings; 36 percent higher than the national median
No. 4 – Aircraft structure assemblers: $83,519 median Texas earnings; 35 percent higher than the national median
No. 5 – Ship captains: $108,905 median Texas earnings; 27 percent higher than the national median
No. 6 – Nursing instructors (postsecondary): $100,484 median Texas earnings; 26 percent higher than the national median
No. 7 – Tax preparers: $63,321 median Texas earnings; 25 percent higher than the national median
No. 8 – Chemists: $104,241 median Texas earnings; 24 percent higher than the national median
No. 9 – Health instructors (postsecondary): $128,680 median Texas earnings; 22 percent higher than the national median
No. 10 – Engineering instructors (postsecondary): $129,030 median Texas earnings; 22 percent higher than the national median

---

This article originally appeared on CultureMap.com.

Solar manufacturer expands Houston footprint with new 4 GW factory

coming soon

Houston-based SEG Solar plans to open a new 4-gigawatt solar module manufacturing facility in Cypress.

The facility represents more than a $200 million investment and will raise SEG's total annual U.S. module production capacity to approximately 6 gigawatts, according to a new release. The expansion is part of SEG’s long-term goal of becoming one of the largest 100 percent U.S.-owned module manufacturers.

The new 500,000-square-foot facility will be located on Telge Road and is expected to create 800 new jobs, according to reports.

“This new facility marks an important milestone for SEG,” Timothy Johnson, VP of operations, said in the release. “It will further strengthen our U.S. manufacturing capabilities while supporting ongoing technology innovation. The plant is designed with the flexibility to integrate next-generation technologies, including (heterojunction solar technology) as the industry evolves.”

Commercial operations at the new facility are expected to commence in Q3 2026.

SEG is also developing a 5-gigawatt ingot and wafer manufacturing facility in Indonesia. Construction on the facility is expected to begin in Q2 2026.

In 2024, SEG Solar opened a new $60 million, 250,000-square-foot facility in Houston to house its production workshops, raw material warehouses, administrative offices, finished goods warehouses and supporting infrastructure. Read more here.

Fervo Energy bumps up IPO target to $1.82B

IPO update

Houston-based geothermal power company Fervo Energy is now eyeing an IPO that would raise $1.75 billion to $1.82 billion, up from the previous target of $1.33 billion.

In paperwork filed Monday, May 11 with the U.S. Securities and Exchange Commission, Fervo says it plans to sell 70 million shares of Class A common stock at $25 to $26 per share.

In addition, Fervo expects to grant underwriters 30-day options to buy up to 8.33 million additional shares of Class A common stock. This could raise nearly $200 million.

When it announced the IPO on May 4, Fervo aimed to sell 55.56 million shares at $21 to $24 per share, which would have raised $1.17 billion to $1.33 billion. The initial valuation target was $6.5 billion.

A date for the IPO hasn’t been scheduled. Fervo’s stock will be listed on Nasdaq under the ticker symbol FRVO.

Fervo, founded in 2017, has attracted about $1.5 billion in funding from investors such as Bill Gates-founded Breakthrough Energy Ventures, Google, Mitsubishi Heavy Industries, Devon Energy (which is moving its headquarters to Houston), Tesla co-founder JB Straubel, CalSTRS, Liberty Mutual Investments, AllianceBernstein, JPMorgan, Bank of America and Sumitomo Mitsui Trust Bank.

Fervo’s marquee project is Cape Station in Beaver County, Utah, the world’s largest EGS (enhanced geothermal system) project. The first phase will deliver 100 megawatts of baseload clean power, with the second phase adding another 400 megawatts. The site can accommodate 2 gigawatts of geothermal energy. Fervo holds more than 595,000 leased acres for potential expansion.

Cape Station has secured power purchase agreements for the entire 500-megawatt capacity. Customers include Houston-based Shell Energy North America and Southern California Edison.

View All Listings

ENERGYCAPITALHTX EMAILS ARE AWESOME