Plus Power, which recently relocated its HQ to Houston, has moved into a larger office space. Image via cushmanwakefield.com

A Northern California-born energy storage startup has established its headquarters in The Woodlands.

Plus Power, which develops battery systems designed to store backup power for electric grids, recently signed a lease for nearly 7,000 square feet at Three Hughes Landing in The Woodlands. The company previously was based in coworking space at the Rayford Office Park in Spring.

The company, founded in 2018, shifted its headquarters from San Francisco to the Houston area last year.

“We chose The Woodlands for its beauty, and walkable access to great nearby hotels, restaurants, and healthy groceries,” says Brandon Keefe, CEO of Plus Power. “A Houston base reflects our deep focus on the Texas market, as we are investing nearly $1 billion in several projects here that will be online by the first quarter of 2024, with more in [the works] behind that.”

About 40 employees work from Plus Power’s new office in The Woodlands. Across North America, the company employs about 130 people, including several in Austin. As of July 10, the startup listed nine job openings.

Plus Power develops, owns, and operates utility-scale systems that store energy in huge lithium-ion batteries during low-demand periods. In times of peak demand, power providers can tap into this stored energy.

“Standalone energy storage is rapidly transforming the U.S. energy markets, because it is cheaper than new natural gas plants, faster to build than fossil peakers or transmission, and able to perform diverse energy services,” the company explains in its job postings.

Peakers are backup power plants that run on fossil fuels.

One of Plus Power’s storage facilities is the 100-megawatt Gambit project, which opened two years ago in Angleton. The nearly eight-acre facility supports power supplies for the Electric Reliability Council of Texas (ERCOT), which runs the power grid for 90 percent of Texas.

The company says the Angleton facility has fed backup energy to ERCOT during this year’s and last year’s heatwaves, as well as last December’s winter freeze.

The Gambit facility might ring a bell with some folks in the Houston area. In January 2022, Austin-based automaker Tesla unveiled a backup power storage facility in Angleton. Plus Power bought the project from Tesla in June 2022.

Plus Power’s development pipeline contains 10 gigawatts’ worth of energy storage projects in 28 states and Canada. That includes massive projects on tap for Hawaii and Arizona.

Last November, Plus Power announced it had secured $219 million in debt financing for construction of the 185-megawatt Kapolei project on a roughly eight-acre site in Oahu, Hawaii. The facility will be tied to Hawaiian Electric’s power grid. Mizuho Securities USA and KeyBank led the financing.

This April, Plus Power held a groundbreaking ceremony for the Sierra Estrella project in Tolleson, a Phoenix suburb. The 250-megawatt system will serve Salt River Project (SRP), a utility provider in the Phoenix area. The roughly 11-acre Tolleson facility is set to open next year, as is another Plus Power project for SRP — the 90-megawatt Superstition facility in Gilbert, another Phoenix suburb.

As its development pipeline demonstrates, Plus Power is firmly plugged into the fast-growing energy storage market.

According to the Houston-based energy research and consulting firm Wood Mackenzie and the American Clean Power Association, the U.S. energy storage market installed a record-breaking 4.8 gigawatts of capacity in 2022. This year, that number is projected to approach 75 gigawatts.

In a March 2023 news release, John Hensley, the clean power group’s vice president of research and analytics, says the U.S. market “is on a rapid growth curve and is already a key component of building a resilient grid that supports abundant clean energy.”

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Here are 10+ must-attend Houston energy transition events for Q2 2025

On the Agenda

Editor's note: Spring is here, and this quarter is packed with must-attend events for those in the energy transition sector. Houston plays host to myriad summits, conferences, and expos that you won't want to miss. Mark your calendars and begin registering today. Please note: this article may be updated to include additional events.

March 31-April 2 — World Hydrogen North America 2025

Seize the opportunity to connect with industry leaders from across the hydrogen value chain, fostering long-term business partnerships and exploring potential collaborations. Engage with prominent off-takers, both nationally and internationally, and gain first-hand insights into the latest projects shaping the future of hydrogen in the USA and Canada.

This event begins March 31 at the Marriott Marquis. Click here to register.

April 1-2 — 8th Annual LNG Summit USA

The LNG Summit USA brings together leaders in the LNG sector, who in turn bring solutions to glaring industry challenges. The event addresses key challenges and opportunities within the LNG industry and the broader energy landscape. The conference will also provide insights into alternative energy options that could potentially replace or complement LNG.

This event begins April 1. Click here to register.

April 17 — 2025 UH Energy Symposium Series on Plastics Circularity

Celebrating its 12th year, the UH Energy Symposium Series tackles critical issues impacting the energy sector. This year’s focus on plastics circularity will bring together industry leaders, researchers, and visionaries to explore the intersection of plastics, sustainability, and energy.

This event begins at 8 am on April 17 at UH Student Center South. Click here to register.

April 28-30 — PPDM Energy Data Convention Houston 2025

This flagship conference is dedicated to exploring the latest advancements and trends in energy data, offering opportunities for networking, knowledge exchange, and collaboration. Gain insights into cutting-edge data management practices and how they can enhance operational efficiency, support strategic decision-making, and contribute to achieving long-term objectives. Highlights include keynote presentations from renowned experts, interactive panel discussions, hands-on workshops, and an exhibitor showcase.

This event begins April 28 at Norris Conference Center. Click here to register.

May 12-15 — Enverus Evolve Conference

Staying ahead of the curve in the energy sector is critical. This conference is designed to equip energy leaders with foresight in the energy market, providing cutting-edge technological know-how, sessions and networking opportunities industry leaders, and offering practical guidance on how to apply technology to solve big problems.

This event begins May 12 at Hilton Americas Houston. Click here to register.

May 27-28 — 6th American LNG Forum

Join LNG industry professionals, innovators, and policymakers to discover groundbreaking technologies that are driving the future of liquified natural gas. Topics will include market dynamics and decarbonization strategies, offering attendees the chance to connect, learn, and become part of the LNG revolution.

This event begins May 27 at the Westin Galleria Houston. Click here to register.

May 28-30 — CHARGE North America

This intimate, immersive experience is tailored to forward-thinking energy professionals. The conference includes hands-on interactive workshops led by top strategists; real-world case studies; and insights from leading speakers on resilient branding, consumer expectations, and climate action. Attendees will engage in panel discussions on sustainability and energy diversification and enjoy exclusive networking opportunities with global executives and innovators.

This event begins May 28 at The Ion. Click here to register.

May 29-30 — 5th Annual American Hydrogen Forum

Connect with hydrogen industry leaders, innovators, and policymakers at the American Hydrogen Forum. Discover groundbreaking technologies and strategies focusing on hydrogen fuel cell technology, hydrogen energy, and low-carbon hydrogen solutions.

This event begins May 29 at the Westin Galleria Houston. Click here to register.

June 4-5 — 2025 AWS Energy Symposium

The fourth annual AWS Energy Symposium is the premier AWS event for the energy industry. Hear from leading energy and utility customers, partners, and startups about how they're using AWS to scale innovation and transform their organizations. The event is invitation only and is geared toward senior leaders and director-level executives from across the energy value chain. Click here to submit a registration request.

June 11-12 — Energy Projects Conference & Expo

The Energy Projects Conference & Expo (EPC Show) is the largest event in North America for professionals working at the heart of major energy projects. The show will bring together five leading conferences under one roof for the first time, uniting 3,000-plus engineering, construction, commissioning, supply chain, operations, and maintenance professionals. Conference subjects span LNG exporting, hydrogen and ammonia, midstream, petrochem and refining, and sustainable aviation fuels.

This event begins June 11 at the George R Brown Convention Center. Click here to register.

June 25-26 — Carbon Capture Technology Expo

Tackling climate change is one of the biggest global challenges that requires immediate action, and many industrial sectors are now looking to new technology to help meet net-zero emission targets. The Carbon Capture Technology Expo is North America's leading event for carbon capture, utilization, and storage. The expo offers opportunities to network with industry frontrunners and best-in-class solution providers.

This event begins June 25 at NRG Center. Click here to register. It is co-located with the Hydrogen Technology Conference & Expo North America. Expo passes are free.


8 Houston energy companies land on Time's top greentech list for 2025

top honor

The accolades keep rolling in for Houston-based Fervo Energy, a producer of geothermal power.

Fervo lands at No. 6 on Time magazine and Statista’s new list of America’s Top GreenTech Companies of 2025. The ranking recognizes sustainability-focused companies based on factors such as impact, financial strength, and innovation.

Time notes that Fervo broke ground in 2023 in Utah on what the company claims will be the world’s largest geothermal plant. The plant is scheduled to start supplying carbon-free electricity to the grid next year and to reach its 400-megawatt capacity in three years.

“Technologies like this only make a difference if we deploy them at large-scale in a way that can reduce carbon emissions and increase the reliability of the grid,” Fervo CEO Tim Latimer told Time in 2023.

The startup was named North American Company of the Year by research and consulting firm Cleantech Group for 2025. Fervo topped the Global Cleantech 100, Cleantech Group’s annual list of the world’s most innovative and promising cleantech companies.

Last year, Fervo also made Time’s list of the 200 Best Inventions of 2024. Fervo was recognized in the green energy category for its FervoFlex geothermal power system.

Founded in 2017, Fervo is now a unicorn, meaning its valuation as a private company exceeds $1 billion. The startup’s valuation is estimated at $1.4 billion. According to PitchBook data, the company raised $634 million in the fourth quarter of 2024.

In all, eight Houston-area companies appear among the top 250 greentech companies ranked by Time and Statista. Other than Fervo, they are:

  • No. 43 Lancium Technologies, an energy storage and distribution company
  • No. 50 Solugen, a producer of sustainable chemicals.
  • No. 56 Quaise Energy, which specializes in terawatt-scale geothermal power.
  • No. 129 Plus Power, a developer, owner and operator of battery storage projects.
  • No. 218 Dream Harvest, which promotes sustainable vertical farming.
  • No. 225 Cemvita, which uses synthetic biology to convert carbon emissions into bio-based chemicals.
  • No. 226 Syzygy Plasmonics, which decarbonizes chemical production.
Vermont-based BETA Technologies claimed the No. 1 spot. The company manufactures electric aircraft.