Helix Earth was one of the winners of SXSW's 2025 pitch competition. Photo by Sergei A/Pexels

Houston had a strong showing at the 2025 SXSW Pitch showcase in Austin, with two local startups claiming top prizes, including a novel clean-tech startup.

Clean-tech company Helix Earth, which spun out of Rice University and was incubated at Greentown Labs, won in the Smart Cities, Transportation & Sustainability contest.

"We faced impressive competition from a well-chosen set of finalists, and we're honored to be chosen as the winners. One of the judges even commented, ‘Who knew you could make air conditioning sexy,’” Brad Husick, Helix's co-founder and chief business officer, said in a release.

Helix Earth was launched in 2022 and is known for its space capsule air filtration system that was co-developed for NASA. The commercial air conditioner add-on technology, now in a pilot phase, has been used to retrofit HVAC systems for commercial buildings and can save up to 50 percent of the net energy, cutting down on emissions and operating costs, according to the company. Its co-founder and CEO Rawand Rasheed was named to the Forbes 30 Under 30 Energy and Green Tech list for 2025.

“This win validates our mission to drive sustainable innovation in commercial air conditioning and beyond. We are excited about the future of Helix Earth and the impact we will have in reducing energy consumption and emissions," Rasheed said in a statement.

Little Place Labs, a Houston space data startup, also walked away a winner in the Security, GovTech & Space competition. The company uses advanced AI and machine learning to deliver near-real-time space analytics for both ground and space-based applications. Its software aims to help first responders, mission planners and decision-makers detect anomalies and make informed decisions quickly. It was co-founded in 2020 at Oxford by Houstonian and CEO Bosco Lai and Gaurav Bajaj and participated in the 2023 AWS Space Accelerator.

"This all started with a simple mission: To deliver real-time space insights to help first responders, mission planners, and decision-makers act before problems arise,” Little Place Labs wrote on LinkedIn. "Today, that mission feels even stronger."

One of SWSX's marquee events, the pitch competition, held March 8-10, featured 45 finalists, selected from 589 applicants, in nine categories.

Two other Houston companies were finalists this year:
  • Trez, a Latino-focused fintech company that uses AI and voice-command payroll through WhatsApp to provide culturally relevant payroll and streamline financial operations for Latino business owners.
  • Tempesst Droneworx, a veteran-owned software company that's Harbinger software providing real-time contextual intelligence for early warning detection, reducing time to decision and speeding time to action.

Jesse Martinez, founder of invincible, and Anu Puvvada of KPMG were two judges representing Houston.

According to SXSW, 647 companies have participated in SXSW Pitch over the years, with over 93 percent receiving funding and acquisitions totaling nearly $23.2 billion. See the full list of 2025 winners here.

At a recent SXSW panel, four Houston energy experts discussed the importance of research, commercialization, and more in Houston to drive the energy transition. Photo via Getty Images

Experts address Houston's energy transition role — from research to commercialization

HOUSTON @ SXSW

Every part of the energy industry is going to have a role in the energy transition — from the universities where the research and development is happening to the startups and the incumbent industry leaders, as a recent SXSW panel discussed.

“We are well known in Houston for being the energy capital of the world," Jane Stricker, executive director of the Houston Energy Transition Initiative, says as moderator of the panel. "The industry typically comes together with stakeholders to think about the solutions and how to solve this dual challenge of continuing to provide more energy to the world but doing it in a way that significantly reduces emissions at the same time.”

The panel, entitled "Ground Zero: Creating Pathways from Research to Scale Deployment," was put on by HETI, an organization under the Greater Houston Partnership, and took place Sunday, March 12, in Austin at SXSW.

“I often say that I believe Houston is ground zero for the transition because we have this unique combination of assets, infrastructure, innovation, research at universities, and a collective understanding of the importance of energy to people’s lives that allows us to tackle this problem in new ways," she continues.

Sticker was joined by Paul Cherukuri, vice president for innovation at Rice University; Juliana Garaizar, chief development and investment officer at Greentown Labs; and Tara Karimi, co-founder and CTO of Cemvita Factory. The panel highlighted the challenges facing Houston as it promises to lead the energy transition.

For Cherukuri, whose innovation-focused position was newly created when he was appointed to it last August, it's a pivotal moment for research institutions.

"It's really an exciting time in Houston because universities are changing," says Cherukuri. "Rice University itself is changing in dramatic ways, and it's a great opportunity to really plug into the energy transition inside of Houston."

The role he plays, as he explains, is to connect Rice innovators to the rest of the city and the world.

"We have to partner through the accelerators as well as with with companies who can catch what we've made and take it to scale," he continues. "That's uniquely something that we can do in Houston. It's not something that a lot of cities can do."

Representing the scaling efforts is Greentown Labs, and Garaizar explains how the Massachusetts-based organization, which has its second outpost in Houston, connects its member companies to corporate partners that can become funders, pilot partners, customers, and more. But scaling can only be accomplished with the right technologies and the proper funding behind them.

"Sixty percent of the technologies that are going to be used to decarbonize the world haven't yet been invented," she says on the panel. "So, there's a huge pull for technology right now. And we see people who are only on the private equity space now finally invested in a lot of earlier series like series A, but there's still some road to to be made there."

Houston-based Cemvita Factory is in the scale phase, and Karimi explains how she's actively working with companies to apply the company's unique biotechnology to convert CO2 to natural resources to accommodate each customer's needs. Cemvita is on the front lines of interacting with incumbent energy businesses that play a major role in the future of energy.

"The way we communicate with energy companies, we tell them that us to be the innovation arm for you and we work together," Karimi says. "I think it's everybody needs to understand it's a transition. There is no way to just change the way that chemicals are produced just immediately and replace it with something new. It's a transition that needs both aspects."

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This article originally ran on InnovationMap.

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6 Houston energy transition events to attend in June 2025

Mark Your Calendar

Editor's note: June has arrived, and with it more must-attend events in the energy transition sector. Mark your calendar today for these conferences, symposiums, summits, expos, and more.

June 4 - Energy Capital Conference

Join 300-plus corporate leaders, financial executives, and institutional investors across the energy sector. Capital partners and energy experts will share market and sector trends, insights, and look ahead to what to expect over the next decade. This conference is now in its third decade.

This event takes place June 4 at the Post Oak Hotel. 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 12 - Transition on Tap

Head to Greentown Labs for this casual networking event, where some of the incubator's newest members will be introduced. Hear lightning pitches from these startups that are working on climate solutions across industries. Following the pitches, guests will network with fellow entrepreneurs, investors, leaders, and other climate champions.

This event takes place June 12 at Greentown Labs. Click here to register.

June 16-18 - Energy Drone & Robotics Summit

This three-day summit, the largest of its kind, will connect 1,500-plus leaders in the global energy/industrial robotics, drone and data sectors. Attendees will glean the latest ideas, use cases, best practices, tech, and trends from a wide variety of robotics and drone industry experts.

This event begins June 16 at Woodlands Waterway Marriott. 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.


Greentown Labs combines forces with MassChallenge to support more climate startups

strategic partnership

Climatetech incubator Greentown Labs has formed a strategic partnership with global zero-equity accelerator MassChallenge.

The two organizations have headquarters in the Boston area, while Greentown Labs is also co-located in Houston. MassChallenge has a hub in Dallas, as well as others in Israel, Switzerland and the United Kingdom.

The new partnership aims to strengthen the ecosystem for early-stage climatetech startups by providing more mentorship, support and a broader commercialization network for members, according to a news release.

Greentown Labs will share its expertise with the 23 startups in MassChallenge's first climate-specific accelerator, known as the MassChallenge Early Stage Climate program. Additionally, Greentown Labs members will benefit from MassChallenge's network of expert mentors, judges, entrepreneurs, partners, investors, philanthropists and others.

“There are so many synergies and shared values between MassChallenge and Greentown that launching a collaboration like this feels like a natural next step for our organizations as we strive to support as many early-stage climate founders as possible,” Georgina Campbell Flatter, Greentown Labs CEO, said in the news release. “We want to reduce the friction and barriers to market for these climate entrepreneurs and ultimately increase their opportunity for success—ecosystem collaboration is an essential part of solving these challenges together.”

Combined, Greentown and MassChallenge report that they have supported more than 4,500 founders and more than 1,000 climate startups. MassChallenge has awarded more than $18 million in equity-free grants to startups, which have gone on to raise over $15 billion, since it was founded in 2009. Greentown Labs has helped more than 575 startups raise more than $8.2 billion in funding since it launched in 2011.

Greentown recently added five startups to its Houston community and 14 other climatetech ventures to its Boston incubator. It also announced its third ACCEL cohort, which works to advance BIPOC-led startups in the climatetech space, earlier this year. Read more here.