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Houston clean energy storage facility goes online to power ERCOT grid

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Jupiter Power's Callisto I is up and running. Photo courtesy of jupiterpower.io

A new battery energy storage facility in Houston is officially up and running to power the ERCOT grid with a supply of reliable, zero emissions power.

Jupiter Power announced the commercial operations launch of its 400-megawatt-hour battery facility, Callisto I, in central Houston on the site of the former HL&P H.O. Clarke fossil fuel power plant.

"Jupiter couldn't be prouder about bringing the Callisto I project online," Andy Bowman, CEO of Jupiter Power, says in a news release. "This project responds to lawmakers' calls to increase affordable and dispatchable new generation in an area where people need more power. Callisto I is the first energy storage project at this scale in the City of Houston and will help meet Houston's growing power needs while also increasing resiliency from extreme weather events."

The new project is Jupiter Power's ninth project to deliver energy storage to ERCOT — bringing its total ERCOT fleet to 1,375-megawatt-hour capacity — but its the first in the Houston area. The company is currently developing over 11,000 megawatts of projects across the country. Founded in 2017, Jupiter Power is headquartered in Austin and has offices in Houston and Chicago.

"The announcement of Jupiter Power's Callisto I Energy Storage project is significant and exciting for the region, as it's the first large-scale transmission-connected energy storage project in the City of Houston," Jane Stricker, senior vice president at the Greater Houston Partnership and executive director at the Houston Energy Transition Initiative, adds. "This critical project will help address peak power demand and is another great example of our region's leadership in scaling and deploying impactful solutions for an all the above energy future."

Among the company's financial backers is Houston-based EnCap Energy Transition, which invested in Jupiter Power via its Fund II.

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EnCap is ready to deploy growth capital to advance the energy transition. Photo via Getty Images

Houston energy transition growth capital firm closes $1.5B fund

A Houston-based energy transition-focused growth capital firm announced the close of its second fund to the tune of $1.5 billion.

EnCap Energy Transition's Fund II, or EETF II, was created to invest in solutions to decarbonize the power industry, and invest in low carbon fuels and carbon management.This second energy transition fund follows EnCap Energy Transition Fund I, a $1.2 billion fund that deployed capital to seven material portfolio company investments and four fund realizations with Broad Reach Power, Jupiter Power, Triple Oak, and Paloma Solar & Wind.

Previously, the company made investment commitments to five portfolio companies through EETF II, including Bildmore Renewables, Linea Energy, Parliament Solar, Power Transitions, and Arbor Renewable Gas. With the Bildmore arm, the EnCap fund aims to fuel development of renewable energy projects that can’t attract traditional tax equity financing.

EnCap expects to have 8-10 portfolio companies in EETF II in total.

"The EnCap Energy Transition team is proud to have raised a sizeable pool of capital to continue to invest in the opportunity created by the shift to a lower-carbon energy system,” EnCap Energy Transition Managing Partner Jim Hughes says in a news release.

“We greatly appreciate the strong support from our existing investor base and are pleased to have added a number of new, high-quality investors, both domestically and internationally," he continues. "Since our inception in 2019, we now manage approximately $2.7 billion of capital commitments to invest in decarbonization and are excited for the opportunities ahead of us."

Recently,EnCap was part of a deal in the battery energy storage business carrying an equity value of more than $1 billion. Engie purchased the majority of a startup . Broad Reach’s battery storage business from EnCap Energy Transition Fund I. Broad Reach launched in 2019 with backing from EnCap.

“We continue to believe all sources of energy are needed to support the world’s growing energy needs and that our Energy Transition Team will build off the significant success achieved to date,” said EnCap Managing Partner Jason DeLorenzo in a news release.

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This article originally ran on InnovationMap.

Bildmore expects to invest in 10 to 15 third-party, utility-scale clean energy projects each year. Photo via Bildmore.com

Houston renewables developer launches platform to invest in energy transition projects

new in Hou

Houston-based EnCap Energy Transition Fund has launched a platform that will take minority equity stakes in battery storage systems, solar energy systems, and other energy transition projects in the U.S.

With its new Bildmore arm, the EnCap fund aims to fuel development of renewable energy projects that can’t attract traditional tax equity financing. Bildmore expects to invest in 10 to 15 third-party, utility-scale clean energy projects each year.

Bildmore seeks to capitalize on clean energy incentives tucked into the federal Inflation Reduction Act of 2022, including the ability of projects to sell tax credits. Specifically, the platform says it hopes to address “a chronic short supply” of tax equity deals due to heightened demand triggered by the inflation reduction law.

EnCap is no stranger to utility-scale solar power and battery storage systems. The fund backs Houston-based Broad Reach Power and Austin-based Jupiter Power, two of the largest players in the U.S. market for battery storage.

David Haug leads Bildmore as its CEO. He is co-founder and senior managing director of Houston-based Arctas Capital Group, which invests in energy infrastructure projects.

“Bildmore will focus on … battery storage and solar projects, particularly those which have chosen to leave all or part of their energy output available for ‘merchant’ sale rather than be sold under long-term contracts,” Haug says in a news release. “We want to help those development teams lacking the deep balance sheets typically required by tax equity providers.”

EnCap Investments, sponsor of the EnCap Energy Transition Fund, manages capital from more than 350 U.S. and international investors. Since its founding in 2019, EnCap Investments has raised 25 institutional investment funds totaling about $41 billion to support independent energy businesses in the U.S.

Broad Reach Power's battery storage assets piqued a French company's interest. Photo via broadreachpower.com

French company to acquire Houston-based battery storage startup in $1B deal

M&A Moves

A French utility company is buying the bulk of Houston-based Broad Reach Power’s battery energy storage business in a deal carrying an equity value of more than $1 billion.

Engie, has agreed to purchase the majority of the startup’s battery storage business from EnCap Energy Transition Fund I and three investment partners — New York City-based Yorktown Partners, Switzerland-based Mercuria Energy, and New York City-based Apollo Infrastructure Funds.

“This acquisition is fully in line with Engie’s strategy: It will contribute to the development of a low-carbon, affordable, and resilient energy system where flexible assets will play a critical role alongside renewables,” says Catherine MacGregor, the utility’s CEO.

Broad Reach launched in 2019 with backing from EnCap Energy Transition, an arm of Houston-based private equity firm EnCap Investments. Apollo Global Management, an asset manager that controls Apollo Infrastructure Funds, bought a 50 percent stake in Broad Reach in 2021.

The deal includes 350 megawatts of grid-scale battery assets that already are operating and 880 megawatts of assets under construction, primarily in the territory served by the Electric Reliability Council of Texas (ERCOT). It also includes a 1.7-gigawatt pipeline of battery storage projects that are in the advanced stage of development and a significant pipeline of early-stage projects.

In July, Broad Reach said it had lined up $435 million in credit facilities to support the 880 megawatts’ worth of systems under construction in Texas and California.

The Broad Reach acquisition does not include the company’s 1.8-gigawatt portfolio of solar and wind power projects, or its four gigawatt-hours’ worth of battery storage in the Mountain West.

The deal is expected to close in the fourth quarter of this year. The purchase price wasn’t disclosed, but the Bloomberg news service reports the deal will cause Engie to “take a $1.6 billion hit” to it net debt.

Shawn Cumberland, managing partner of EnCap and chairman of Broad Reach, calls Broad Reach “the top battery storage player in the U.S. market.” And Corinne Still, an infrastructure partner at Apollo, refers to Broad Reach as “the leading and most innovative” battery energy storage operator in North America.

“It has been a terrific honor and pleasure to be part of the rapid growth of the U.S. energy storage sector from the very beginning and see our company grow into one of the top developers,” says Doug Moorehead, founder and COO of Broad Reach.

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Houston cleantech company closes $12M seed round

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Houston-based Helix Earth Technologies has closed a $12 million Seed 2 funding round to scale manufacturing of its energy-efficient commercial HVAC add-on technology.

Veriten, a Houston-based energy investment firm, led the round. Rua Ventures, Carnrite Ventures, Skywriter LLC and Textbook Ventures also participated.

Helix Earth—which was founded based on NASA technology, spun out of Rice University and has been incubated at Greentown Labs—is developing high-efficiency retrofit dehumidification systems that aim to reduce the energy consumption of commercial HVAC units. The company reports that its technology can lead to "healthier indoor air, lower energy bills, reduced building maintenance, and more comfortable spaces for building owners and occupants."

"Building owners are dealing with rising energy costs, uncontrolled humidity, and aging infrastructure with no viable, cost-effective path forward. We are in the field today solving these problems for commercial customers, and this capital puts us on an aggressive path to scale,” Rawand Rasheed, Helix Earth co-founder and CEO, said in a news release.

“The strength of this round reinforces our team's conviction that we can transform innovation-starved sectors with transformational solutions that deliver order-of-magnitude improvements to owners and operators, for both their bottom line and the environment,” Rasheed added.

Maynard Holt, Veriten’s founder and CEO, said that the investment firm is tripling its investment in Helix Earth.

"The team has built breakthrough technology with real applicability across multiple industries,” Holt said in the release. “Their first product will have an immediate and measurable impact on our energy system, and they are already pursuing adjacent innovations to help heavy industries operate more efficiently and with less waste. This is a well-rounded team with a proven track record of strong execution and disciplined capital management.”

Helix Earth also closed a $5.6 million seed funding round in 2024, led by Veriten.

Last year, the company secured a $1.2 million Small Business Innovation Research (SBIR) Phase II grant and won in the Smart Cities, Transportation & Sustainability contest at the 2025 SXSW Pitch Showcase. Rasheed was also named to the Forbes 30 Under 30 Energy and Green Tech list for 2025.

SLB and NVIDIA expand partnership to scale AI across energy sector

AI partnership

Houston-based energy technology company SLB has expanded its 18-year tech collaboration with chipmaker NVIDIA to include the development of an “AI factory for energy.”

Through their partnership, SLB and NVIDIA will create AI infrastructure and models built around SLB’s existing digital platforms to help energy companies scale AI for data and operations.

In addition to the development of the “AI factory,” SLB will:

  • Provide modular design services to enhance NVIDIA’s blueprint for building, launching and operating gigawatt-scale AI data centers. In this case, modular design involves manufacturing data center components off-site.
  • Use NVIDIA’s AI infrastructure to improve the processing of large datasets and AI models across SLB’s digital platforms.

Energy companies generate vast amounts of operational data, which can slow down and silo decision-making, SLB says. By combining NVIDIA’s Omniverse libraries and its Nemotron open models with SLB’s digital and AI platforms, the companies aim to more rapidly transform data into actionable insights.

Omniverse libraries are sets of prebuilt 3D elements, such as objects, surfaces and interactive features, that make it easier to construct detailed virtual spaces without having to design everything manually. They’re commonly used for building immersive environments, digital replicas of real-world systems and simulation scenarios.

Nemotron open models are AI models that are freely available to download and modify. Instead of relying on a hosted service, you can run them on your own infrastructure and tailor them to fit specific needs.

Vladimir Troy, vice president of AI infrastructure at NVIDIA, says the energy sector is at the forefront of AI driving a “new industrial revolution.”

“The winners in AI will be companies with the best data, the deepest domain expertise, and the ability to scale,” Demos Pafitis, SLB’s chief technology officer, added. “By collaborating with NVIDIA to advance modular data center construction and harness our domain expertise and digital platforms, we’re enabling the energy industry to deploy AI at scale and transform operational data into smarter decisions.”

Houston poised for Texas-sized data center growth and more energy news

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Editor's note: The top energy transition news of the month looks at the future of data centers in Houston; a big step for Fervo; and what hotter, longer summers mean for Texans. Below are the five most-read EnergyCapital stories published March 16-30, 2026:

1. Houston data center capacity could more than double by 2028, CBRE report says

Houston's data center scene has received its latest bullish forecast. Photo via serverfarmllc.com

The Houston market could more than double its data center capacity by the end of 2028, a new report indicates. The report, published by commercial real estate services provider CBRE, says greater demand for data center capacity in the Houston area is being fueled by energy companies, along with large-scale cloud services and AI-driven tenants. In the second half of 2025, the Houston market had 154 megawatts of data center capacity, which was on par with capacity in the second half of 2024. Another 28.5 megawatts of capacity was under construction during that period. Continue reading.

2. Fervo secures $421M in financing for Cape Station construction

Fervo Energy has closed financing to support the remaining construction costs for the first phase of Cape Station. Photo via fervoenergy.com

Houston geothermal unicorn Fervo Energy has closed $421 million in non-recourse debt financing for the first phase of its flagship Cape Station project in Beaver County, Utah. Fervo believes Cape Station can meet the needs of surging power demand from data centers, domestic manufacturing and an energy market aiming to use clean and reliable power. According to the company, Cape Station will begin delivering its first power to the grid this year and is expected to reach approximately 100 megwatts of operating capacity by early 2027. Fervo added that it plans to scale to 500 megawatts. Continue reading.

3. Energy expert: What record heat and extended summers mean for Texans

Extreme weather in Texas is not only increasing but also becoming more hazardous for communities, infrastructure, and the economy. Photo by Jarosław Kwoczała on Unsplash

Earth’s third-warmest year on record occurred in 2025, reinforcing a decades-long pattern of rising global temperatures. This warming trend is increasingly reflected in regional weather patterns across the United States, particularly in Texas, where hotter summers, prolonged droughts, and heavier rainfall events are becoming more common. A 2024 report from Texas A&M University highlights how these shifts are already reshaping weather conditions across the Lone Star State. The assessment analyzes climate and weather data from 1900 through 2023 and projects likely trends through 2036. Continue reading.

4. TotalEnergies strikes $1B federal deal to exit offshore wind sector

TotalEnergies is canceling its U.S. offshore wind projects. Photo via totalenergies.com

TotalEnergies, a French company whose U.S. headquarters is in Houston, has agreed to redirect nearly $930 million in capital from two offshore wind leases on the East Coast to oil, natural gas and liquefied natural gas (LNG) production. In its agreement with the U.S. Department of the Interior, TotalEnergies has also promised not to develop new offshore wind projects in the U.S. “in light of national security concerns.” Continue reading.

5. 30+ CERAWeek events featuring Houston energy leaders

Heading to CERAWeek? Here's where to find Houston energy leaders on the Agora track. Photo courtesy of CERAWeek

CERAWeek returned to Houston March 23-27, bringing more than 1,000 speakers, executives and energy innovators to Houston.Here are some of the many events that featured Houston leaders on the Agora track. Continue reading.

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