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8+ can't-miss events at Houston Energy and Climate Startup Week 2025

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Houston Energy and Climate Startup Week returns Sept. 15-19. Photo via rice.edu

Editor's note: This article may be updated to include additional events.

The second annual Houston Energy and Climate Startup Week is less than a month away—and the calendar of events is taking shape.

The series of panels, happy hours and pitch days will take place Sept. 15-19. The Ion District will host many of the week's events.

Here are the details on some of the can't-miss events of the week:

Houston Energy & Climate Startup Week Kickoff Panel and Block Party

Join fellow innovators, founders, investors and energy leaders at this kick-off event hosted by The Ion and HETI, which will feature brief welcome remarks, a panel discussion and networking, followed by a block party on the Ion Plaza.

This event is Monday, Sept. 15, at 4 p.m. at The Ion. Register here.

Energytech Nexus Pilotathon

Grab breakfast and take in keynotes and panels by leaders from New Climate Ventures, V1 Climate, Halliburton, Energy Tech Nexus and many others. Then hear pitches during the Pilotathon, which targets startups ready to implement pilot projects within six to 12 months.

This event is Tuesday, Sept. 16, from 8 a.m.-5 p.m. at GreenStreet. Get tickets here.

Meet the Activate Houston Cohort 2025 Fellows

Meet Activate's latest cohort, which was named this summer, and also learn more about its 2024 group.

This event is Tuesday, Sept. 16, at 5 p.m. at the Ion. Register here.

New Climate Ventures Afterparty

Enjoy music, networking and carbon-negative spirits at Axelrad. Houston startups Quaise Energy, Solidec, Dimensional Energy, Rheom Materials, and Active Surfaces will also be on-site.

This event is Tuesday, Sept. 16, from 6:30-9:30 p.m. at Axelrad. Register here.

Green ICU Conference: Sustainability in Health Care for a Healthier Future

Houston Methodist will host its inaugural Green ICU Conference during Houston Energy & Climate Week. The conference is designed to bring together healthcare professionals, industry leaders, policymakers and innovators to explore solutions for building a more sustainable healthcare system.

This event is Wednesday, Sept. 17. from 8 a.m.-3 p.m. at TMC Helix Park. Register here.

Rice Alliance Energy Tech Venture Forum

Hear from clean energy startups from nine countries and 19 states at the 22nd annual Energy Tech Venture Forum. The 12 companies that were named to Class 5 of the Rice Alliance Clean Energy Accelerator will present during Demo Day to wrap up their 10-week program. Apart from pitches, this event will also host keynotes from Arjun Murti, partner of energy macro and policy at Veriten, and Susan Schofer, partner at HAX and chief science officer at SOSV. Panels will focus on corporate innovation and institutional venture capital.

This event is Thursday, Sept. 18, from 7:30 a.m.-5 p.m. at Rice University’s Jones Graduate School of Business. Register here.

Shell STCH Open House

Get a behind-the-scenes look at how Shell is leveraging open innovation to scale climate tech. The open house will spotlight two Houston-based startups—Mars Materials, which converts captured CO2 into acrylonitrile, and DexMat, which transforms methane into high-performance carbon nanotube fibers.

This event is Thursday, Sept. 18, from 8:30 a.m.-12:15 p.m. at Shell Technology Center. Register here.

ACCEL Year 3 Showcase

Celebrate Advancing Climatetech and Clean Energy Leaders Program, or ACCEL, an accelerator program for startups led by BIPOC and other underrepresented founders from Greentown Labs and Browning the Green Space. Two Houston companies and one from Austin are among the eight startups to be named to the 2025 group. Hear startup pitches from the cohort, and from Greentown's Head of Houston, Lawson Gow, CEO Georgina Campbell Flatter and others.

This event is Thursday, Sept. 18, from 5-8 p.m. at Greentown Labs. Get tickets here.

Halliburton Labs Finalists Pitch Day

Hear from Halliburton Labs' latest cohort of entrepreneurs. The incubator aims to advance the companies’ commercialization with support from Halliburton's network, facilities and financing opportunities. Its latest cohort includes one company from Texas.

This event is Friday, Sept. 19, from 8 a.m.-noon at The Ion. Register here.

Chevron Energy Innovation Finals

The University of Houston will present the 4th Annual Chevron Innovation Commercialization Competition.

The event is Friday, Sept. 19, from 10 a.m.-1:30 p.m. at the University of Houston. Register here.

Houston Energy and Climate Startup Week was founded in 2024 by Rice Alliance for Technology and Entrepreneurship, Halliburton Labs, Greentown Labs, Houston Energy Transition Initiative (HETI), Digital Wildcatters and Activate.

Last year, Houston Energy and Climate Startup Week welcomed more than 2,000 attendees, investors and industry leaders to more than 30 events. It featured more than 100 speakers and showcased more than 125 startups.





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Houston energy giants among top AI adopters and more news to know

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Editor's note: The top energy transition news for Oct. 15-31 includes AI integration among energy leaders and the most promising startups from an annual pitch competition. Here are the most-read EnergyCapitalHTX stories for the second half of October:

1. 2 Houston energy giants appear on Fortune’s inaugural AI ranking

ExxonMobil is on Fortune's first-ever AIQ ranking. Getty Images

Two Houston-area energy leaders appear on Fortune’s inaugural list of the top adopters of AI among Fortune 500 companies. They are: No. 7 energy company ExxonMobil, based in Spring and No. 47 energy company Chevron, based in Houston. They are joined by Spring-based tech company Hewlett Packard Enterprise, No. 19. All three companies have taken a big dive into the AI pool. Continue reading.

2. Energy Tech Nexus names 8 startup winners from Pilotathon pitch event

Eight startups were given awards at Energy Tech Nexus' Pilotathon. Photo via Getty Images.

Energy Tech Nexus held its Pilotathon and Showcase during the second annual Houston Energy & Climate Startup Week last month and granted awards to eight startups. This year's event, focused on the theme "Energy Access and Resilience," offered 24 startups an opportunity to pitch their pilot projects. Continue reading.

3. Houston organization proposes Gulf Coast index for hydrogen market

The Clean Hydrogen Buyers Alliance plans to create the Gulf Coast Hydrogen Index to bring to bring transparency and confidence to hydrogen pricing. Photo via Getty Images

The Clean Hydrogen Buyers Alliance has proposed an index aimed at bringing transparency to pricing in the emerging hydrogen market. The Houston-based alliance said the Gulf Coast Hydrogen Index, based on real-time data, would provide more clarity to pricing in the global market for hydrogen. The benchmarking effort is being designed to benefit clean hydrogen buyers, sellers and investors. The index would help position the U.S. “as the trading anchor for hydrogen’s next chapter as a globally traded commodity,” the alliance said. Continue reading.

4. Houston clean energy company to develop hybrid renewable project in Port Arthur

The new Pleasure Island Power Collective in Port Arthur is expected to generate 391 megawatts of clean power. Photo via unsplash.

Houston-based clean energy company Diligence Offshore Services has announced a strategic partnership with Florida-based floating solar manufacturing company AccuSolar for the development of a renewable energy project in the Port Arthur area. Known as the Pleasure Island Power Collective, it will be built on 2,275 acres across Pleasure Island and Sabine Lake. It is expected to generate 391 megawatts of clean power, alongside a utility-scale battery energy storage system. Continue reading.

5. Port Houston reports emissions progress as cargo volumes climb

Ric Campo says Port Houston is “moving in the right direction.” Photo via Getty Images.

Port Houston’s initiatives to reduce emissions have shown some positive results, according to new data from the Port of Houston Authority. Pulling from the Goods Movement Emissions Inventory (GMEI) report, which tracks port-related air emissions, Port Houston cited several improvements compared to the most recent report from 2019. Continue reading.

3 energy transition cos. in the running for Houston Startup of the Year

People's Choice

We're just two weeks away from the 2025 Houston Innovation Awards, presented by InnovationMap.com, and while an expert panel of judges will determine the winners in most categories, one award is up to the public.

Voting is now open for 2025 Houston Startup of the Year, the people's choice award. Six exceptional finalists are in the running for the title, including three from the energy transition sector.

From next-gen biobased materials to technology that creates chemicals without carbon emissions, these companies are shaping the future.

Read about all of the Startup of the Year finalists and their missions below, then cast your vote. You can vote once per day through November 12.

The winner, along with winners in all other categories, will be revealed live on November 13 at Greentown Labs. Tickets to the 2025 Houston Innovation Awards are available now — get yours today.

2025 Houston Startup of the Year finalists:

Eclipse Energy

Eclipse Energy, previously known as Gold H2, is a climatetech startup converting end-of-life oil fields into low-cost, sustainable hydrogen sources. The company completed its first field trial this summer, which demonstrated subsurface bio-stimulated hydrogen production. Eclipse Energy says Its technology could yield up to 250 billion kilograms of low-carbon hydrogen.

Rheom Materials

Rheom Materials is a next-generation startup developing biobased materials for a more sustainable future. Its two flagship offerings are Shorai, a sustainable leather alternative that is usable for apparel, accessories, car interiors, and more, and Benree, an alternative to plastic without the carbon footprint.

Solidec

Solidec is a chemical manufacturing company developing autonomous generators that extract molecules from water and air and convert them into pure chemicals and fuels that are free of carbon emissions. The technology eliminates the need for transport, storage, and permitting.

FlowCare

FlowCare is developing a period health platform that integrates smart dispensers, education, and healthcare into one system to make free, high-quality, organic period products more accessible. FlowCare is live at prominent Houston venues, including Discovery Green, Texas Medical Center, The Ion, and, most recently, Space Center Houston, helping make Houston a “period positivity” city.

MyoStep

MyoStep is a next-generation, lightweight, soft exoskeleton developed at University of Houston for children with cerebral palsy. The soft skeleton aims to address motor impairments that impact their ability to participate in physical activities, self-care, and academics, via an affordable, child-friendly solution that empowers mobility and independence.

Persona AI

Persona AI is a humanoid robotics startup that is creating rugged, autonomous robots for skilled, heavy industry work for various "4D" (dull, dirty, dangerous, and declining) jobs. In May, the company announced a memorandum of understanding with HD Korea Shipbuilding & Offshore Engineering, HD Hyundai Robotic, and Vazil Company to create and deploy humanoid robots for complex welding tasks in shipyards. The project will deliver prototype humanoids by the end of 2026.

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The Houston Innovation Awards program is sponsored by Houston Community College, Houston Powder Coaters, FLIGHT by Yuengling, and more to be announced soon. For sponsorship opportunities, please contact sales@innovationmap.com.

What to expect from the 2025 Greentown Labs' Climatetech Summit Houston

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Greentown Labs' Climatetech Summit Houston will take place next Tuesday, Nov. 4, bringing together philanthropists, executives and innovators in the energy transition space.

John Arnold, co-founder and co-chair of Arnold Ventures, will participate in the keynote fireside chat with Greentown CEO Georgina Campbell Flatter. The conversation will explore "top priorities and opportunities in energy innovation today—with a special focus on how these dynamics are playing out in Houston," according to Greentown.

Other highlights will include:

  • Welcome remarks from Houston Mayor John Whitmire
  • A course led by TEX-E Executive Director Sandy Guitar
  • A philanthropy panel featuring Greentown Labs new Head of Philanthropy Stacey Harris
  • The Energy Jobs of the Future, featuring Sameer Bandhu, GE Vernova’s managing director, ventures and licensing
  • An Energy-transition Roadmap, featuring Monica Krishnan, Hermann Lebit and Bobby Tudor and moderated by Varun Rai
  • What is Climatetech? featuring Kyle Judah, Emerson Denka Wangdi, Laureen Meroueh and Head of Greentown Houston Lawson Gow

Ten Greentown Labs startups will also present their pitches at the event. Expect to hear from:

  • MCatalysis Inc. CEO, President, and Founder Michael D. Irwin. Dallas-based MCatalysis develops novel, high-efficiency industrial microwave processes and catalysts to produce low-cost, clean synthetic fuels and chemicals from waste carbon resources.
  • Pike Robotics CEO and co-founder Connor Crawford. Austin-based Pike Robotics provides next-gen robotic solutions for in-service inspection of floating roof storage tanks.
  • Helix Earth CEO and co-founder Rawand Rasheed. Houston-based Helix Earth retrofits commercial HVAC systems to improve energy efficiency.
  • 10DQ CEO Steven Reece. Greentown Boston member 10DQ has developed its Redox Loop Battery, which uses novel, water-based electrolytes to store energy in dense, low-cost, earth-abundant battery materials.
  • Janta Power CEO Mohammed Njie. Dallas-based Janta Power is developing 3D solar towers.
  • Neuralix business operations and product developer Annorah Lewis. Houston-based Neuralix offers a suite of rapid, customizable templates for the data lifecycle for the energy and manufacturing sectors.
  • Ententia co-founder Nishant Shah. Houston-based Etenitia develops enterprise AI platforms and systems that use domain expertise, rich multi-modal industrial datasets, and generative AI technology to power more effective and efficient business workflows.
  • Locoal CEO Miles Murray. Boerne, Texas-based Locoal is a waste-to-energy company that has developed a proprietary mobile containerized fluidized gasifier that diverts waste, converts it to clean energy and captures carbon in value-added co-products.
  • SpiralWave co-founder Adam Amad. San Francisco-based SpiralWave has developed novel electrochemical carbon capture technology that lowers costs.
  • Biatech founder and CEO Nathan Hartwig. Tampa-based Biatech has built an application-layer AI platform to help energy, mining and infrastructure operators optimize asset performance, reduce risk and improve decision-making.

In addition to the startup pitches, attendees will also be able to meet founders and Greentown members during the afternoon startup showcase. A networking reception at Axelrad Houston follows. A separate ticket offers admission to the showcase and networking event only.

See the full agenda here.

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