Houston firm's portfolio co. goes online with solar, energy storage facility in Nevada

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Primergy says Gemini is the biggest solar-and-storage duo in the U.S. Photo via primergysolar.com

A portfolio company of Quinbrook Infrastructure Partners, an energy-focused investment manager with U.S. offices in Houston and New York, has flipped the switch on its solar power and battery energy storage system in Nevada’s Mojave Desert.

The portfolio company, Oakland, California-based Primergy Solar, says its Gemini Solar + Storage project near Las Vegas is now fully operational.

Gemini’s 1.8 million solar panels can generate up to 690 megawatts of power, enough to meet 10 percent of Nevada’s peak power demand. The panels are paired with 380 megawatts of four-hour battery storage.

“Gemini creates a blueprint for holistic and innovative clean energy development at mega scale, and we are proud to have brought this milestone project to life and to have delivered so many positive impacts across job creation, environmental stewardship, and local community engagement,” David Scaysbrook, co-founder and managing partner of Quinbrook, says in a news release.

Primergy says Gemini is the biggest solar-and-storage duo in the U.S.

“Achieving full commercial operations marks a significant technical and financial milestone for our team. We successfully navigated challenging supply chain and inflation issues through proactive planning and collaboration to bring this project online,” Primergy CEO Ty Daul says.

Primergy develops, owns, and operates utility-scale solar power and battery storage projects across the U.S. It manages projects in several U.S. energy markets, including the one served by the Electric Reliability Council of Texas (ERCOT).

As Gemini was taking shape, Primergy and Quinbrook closed on $1.9 billion in debt and tax equity financing for construction and development.

In October 2022, APG, the largest pension asset manager in the Netherlands, acquired a 49 percent ownership stake in Gemini on behalf of pension fund client ABP.

In April 2024, the remaining 51 percent share of the project was acquired by the $600 million Quinbrook Valley of Fire Fund. Funds associated with Blackstone Strategic Partners and Ares Management Infrastructure Secondaries were the lead investors.

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Catalyze’s proprietary suite of technology will bring solar development practices to Lancaster and Amherst areas. Photo courtesy of Catalyze

Houston company secures $100M to fund solar projects across New York

fueling up

Houston’s Catalyze announced that it secured $100 million in financing from NY Green Bank to support a 79 megawatt portfolio of community distributed generation solar projects across the state of New York.

The loan is part of Catalyze’s increased presence in New York State with operational projects coming to Lancaster and Amherst. Catalyze’s proprietary suite of technology will bring solar development practices to the area.

Catalyze is a Houston-headquartered clean energy transition company that builds, owns, finances, and operates solar and battery storage systems. Catalyze is backed by leading energy investors EnCap Investments L.P. and Actis. NY Green Bank is a division of the New York State Energy Research and Development Authority.

The deal aims to advance New York State’s Climate Leadership and Community Protection Act goal of installing six gigawatts of distributed solar by 2025. This is part of a larger goal to 10 GW by 2030.

Catalyze owns two proprietary technologies in REenergyze, which is an origination-to-operations software integration platform to accelerate and scale nationwide adoption of commercial and industrial solar and storage, and SolarStrap. SolarStrap isa mounting technology to install rooftop panels.

“We are excited to leverage our extensive community solar expertise to ensure the success of NY Green Bank’s term loan supporting a community distributed generation (CDG) portfolio,” Jared Haines CEO of Catalyze, says in a news release. “CDG is one of the most effective means of making solar energy more accessible to low-to-moderate income communities, and we look forward to how this partnership will support both the goals of NY Green Bank and New York State.”

Aggreko’s Energy Transition Solutions division acquired a portfolio of nine community solar projects in the state of New York. Photo courtesy of Aggreko

Houston solar company secures 9 New York solar projects

solar solutions

A Houston-based energy solution company has made some big moves on the East Coast.

Aggreko’s Energy Transition Solutions division acquired a portfolio of nine community solar projects in the state of New York.

The ground-mounted installations will total approximately 59 MW of generating capacity Aggreko ETS also successfully connected the first of the nine projects to the grid, a 5.9 MWdc project in the town of Vernon, 40 miles east of Syracuse.

The nine community solar sites aim to assist low-and-moderate income New Yorkers in benefiting from clean solar energy without residential solar installations.

Aggreko ETS will be in charge of the construction of these projects. Aggreko, which is headquartered in Houston, is actively investing in more sustainable products, fuels, innovative technology, and services to make greener solutions accessible.

“We’re thrilled to complete this important transaction, which reinforces Aggreko’s capabilities as an experienced renewable energy developer, owner, and operator that can deftly structure and execute complicated asset acquisitions to scale its business,” says Prashanth Prakash, Aggreko ETS’s chief commercial officer in a news release.

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Large-scale battery storage project slated for Houston and more energy news to know

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Editor's note: The top energy transition news for the first half of May 2025 includes two global energy projects with Houston ties. Plus, we look at Houston's new Climate Justice Plan. Get the details on EnergyCapitalHTX's most-read stories below.

1. China-based company to launch its largest U.S. energy storage project in Houston

China-based Trina Storage is starting its U.S. expansion in Houston. Photo via trinasolar.com

Trina Storage and FlexGen, a North Carolina-based company that develops integrated energy storage systems, are bringing a 371-megawatt battery energy storage system to Houston. The project will be the largest grid-scale deployment project in North America by Trina Storage, which is a business unit of China-based Trina Solar.

"This project is a testament to Trina Storage's ability to provide a fully bankable, integrated energy storage solution that meets the evolving needs of the market," Terry Chen, vice president of Trina Storage North America, said.

"As our first grid-scale deployment in North America, this achievement reflects the industry's confidence in our technology and our commitment to de-risking energy storage investments and supporting the energy transition in the region." Continue reading.

2. Houston climatech company signs on to massive carbon capture project in Malaysia

HYCO1 has signed an agreement to convert 1 million tons per year of raw CO2 into industrial-grade syngas at a new carbon capture project in Malaysia. Photo via Getty Images.

Houston-based CO2 utilization company HYCO1 has signed a memorandum of understanding with Malaysia LNG Sdn. Bhd., a subsidiary of Petronas, for a carbon capture project in Malaysia, which includes potential utilization and conversion of 1 million tons of carbon dioxide per year.

The project will be located in Bintulu in Sarawak, Malaysia, where Malaysia LNG is based, according to a news release. Malaysia LNG will supply HYCO1 with an initial 1 million tons per year of raw CO2 for 20 years starting no later than 2030. The CCU plant is expected to be completed by 2029.

"This is very exciting for all stakeholders, including HYCO1, MLNG, and Petronas, and will benefit all Malaysians," HYCO1 CEO Gregory Carr said. "We approached Petronas and MLNG in the hopes of helping them solve their decarbonization needs, and we feel honored to collaborate with MLNG to meet their Net Zero Carbon Emissions by 2050.” Continue reading.

3. Oxy opens energy-focused innovation center in Midtown Houston

The Oxy Innovation Center is now open at the Ion in Houston, and a new coworking space launches this week. Photo courtesy of the Ion

Houston-based Occidental officially opened its new Oxy Innovation Center with a ribbon cutting at the Ion last month.

The opening reflects Oxy and the Ion's "shared commitment to advancing technology and accelerating a lower-carbon future," according to an announcement from the Ion.

Oxy, which was named a corporate partner of the Ion in 2023, now has nearly 6,500 square feet on the fourth floor of the Ion. Continue reading.

4. Harris County looks to future with new Climate Justice Plan

Harris County commissioners approved a plan that seeks to address issues of ecology, infrastructure, economy, community and culture. Photo via Getty Images.

Harris County commissioners approved a five-point Climate Justice Plan last month with a 3-1 vote by Harris County commissioners. The plan was created by the Office of County Administration’s Office of Sustainability and the nonprofit Coalition for Environment, Equity and Resilience.

“Climate action planning that centers on justice has the potential to spark innovative thinking and transformative actions that will lead to meaningful and just transitions in communities, policies, funding mechanisms, and implementation strategies,” the 59-page report reads.

The plan seeks to address issues relating to ecology, infrastructure, economy, community and culture. Continue reading.

5. Houston company completes orphan well decommission project in the Gulf

Promethean Energy had completed a significant decommissioning project in the Matagorda Island area. Photo via Getty Images.

Houston-based Promethean Energy announced this month that it has successfully decommissioned offshore orphaned wells in the Matagorda Island lease area.

Around this time last year, the company shared that it would work on the temporary abandonment of nine orphan wells on behalf of the Department of Interior's Bureau of Safety and Environmental Enforcement, or BSEE, in the area. Promethean is known for decommissioning mature assets in a cost-effective and environmentally sustainable manner.

“Our team is incredibly proud to have completed this critical work efficiently, safely, and ahead of budget,” Steve Louis, SVP of decommissioning at Promethean Energy, said. “By integrating our expertise, technologies and strategic partnerships, we have demonstrated that decommissioning can be both cost-effective and environmentally responsible.” Continue reading.

Engie signs deal to supply wind power for Texas data center

wind deal

Houston-based Engie North America, which specializes in generating low-carbon power, has sealed a preliminary deal to supply wind power to a Cipher Mining data center in Texas.

Under the tentative agreement, Cipher could buy as much as 300 megawatts of clean energy from one of Engie’s wind projects. The financial terms of the deal weren’t disclosed.

Cipher Mining develops and operates large data centers for cryptocurrency mining and high-performance computing.

In November, New York City-based Cipher said it bought a 250-acre site in West Texas for a data center with up to 100 megawatts of capacity. Cipher paid $4.1 million for the property.

“By pairing the data center with renewable energy, this strategic collaboration supports the use of surplus energy during periods of excess generation, while enhancing grid stability and reliability,” Engie said in a news release about the Cipher agreement.

The Engie-Cipher deal comes amid the need for more power in Texas due to several factors. The U.S. Energy Information Administration reported in October that data centers and cryptocurrency mining are driving up demand for power in the Lone Star State. Population growth is also putting pressure on the state’s energy supply.

Last year, Engie added 4.2 gigawatts of renewable energy capacity worldwide, bringing the total capacity to 46 gigawatts as of December 31. Also last year, Engie signed a new contract with Meta (Facebook's owner) and expanded its partnership with Google in the U.S. and Belgium.

Houston researchers make headway on developing low-cost sodium-ion batteries

energy storage

A new study by researchers from Rice University’s Department of Materials Science and NanoEngineering, Baylor University and the Indian Institute of Science Education and Research Thiruvananthapuram has introduced a solution that could help develop more affordable and sustainable sodium-ion batteries.

The findings were recently published in the journal Advanced Functional Materials.

The team worked with tiny cone- and disc-shaped carbon materials from oil and gas industry byproducts with a pure graphitic structure. The forms allow for more efficient energy storage with larger sodium and potassium ions, which is a challenge for anodes in battery research. Sodium and potassium are more widely available and cheaper than lithium.

“For years, we’ve known that sodium and potassium are attractive alternatives to lithium,” Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering at Rice, said in a news release. “But the challenge has always been finding carbon-based anode materials that can store these larger ions efficiently.”

Lithium-ion batteries traditionally rely on graphite as an anode material. However, traditional graphite structures cannot efficiently store sodium or potassium energy, since the atoms are too big and interactions become too complex to slide in and out of graphite’s layers. The cone and disc structures “offer curvature and spacing that welcome sodium and potassium ions without the need for chemical doping (the process of intentionally adding small amounts of specific atoms or molecules to change its properties) or other artificial modifications,” according to the study.

“This is one of the first clear demonstrations of sodium-ion intercalation in pure graphitic materials with such stability,” Atin Pramanik, first author of the study and a postdoctoral associate in Ajayan’s lab, said in the release. “It challenges the belief that pure graphite can’t work with sodium.”

In lab tests, the carbon cones and discs stored about 230 milliamp-hours of charge per gram (mAh/g) by using sodium ions. They still held 151 mAh/g even after 2,000 fast charging cycles. They also worked with potassium-ion batteries.

“We believe this discovery opens up a new design space for battery anodes,” Ajayan added in the release. “Instead of changing the chemistry, we’re changing the shape, and that’s proving to be just as interesting.”

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