Fifteen startups — with clean energy solutions involving everything from solar energy to hydrogen — are joining Rice Alliance's Clean Energy Accelerator later this summer. Photo via Getty Images

A clean energy program has announced its third cohort and named the 15 startups that were accepted into to the accelerator.

The Rice Alliance's Clean Energy Accelerator revealed its 2023 cohort that will be in the 10-week program that kicks of July 25. CEA, a hybrid program based out of the Ion, will wrap up with a Demo Day alongside the 20th Annual Rice Alliance Energy Tech Venture Forum on September 21.

The accelerator, led by Kerri Smith and Matt Peña, provides the cohort with programming, networking, and mentorship from six executives in residence — Nathan Ball, Fatimah Bello, Michael Egan, Michael Evans, Stephen Sims, and Deanna Zhang.

Since the Clean Energy Accelerator launched in 2021, the program has supported 29 ventures that have gone on to raise over $75 million in funding, identified and launched pilots, and created jobs, According to Rice, many of these companies relocated to Houston.

Class 3, which has already raised $23.3 million in funding, hails from four countries and seven states and are addressing a range of energy solutions — from advanced materials, carbon management/capture, energy storage, hydrogen, solar energy, wind energy, and more. They were selected by a screening committee consisting of more than 50 industry experts, investors, energy leaders, and entrepreneurs.

The third class, as announced by Rice Alliance, is as follows:

  • Ayrton Energy, based in Alberta, Canada, provides hydrogen storage technology that improves hydrogen transport logistics for distributed energy applications.
  • Headquartered in Massachusetts, Carbix transforms atmospheric carbon dioxide emissions into building materials using proprietary reactor technology.
  • Houston-based CryoDesalination lowers the carbon footprint and cost of removing salts and heavy metals from water and industrial effluents.
  • Digital Carbon Bank, based in Alberta, Canada, provides a carbon solution tailored for the energy industry.
  • Chandler, Arizona-based EarthEn provides compressed carbon dioxide-based energy storage and artificial intelligence solutions allowing grid owners/operators to be completely renewable.
  • H Quest Vanguard, from Pittsburgh, provides green hydrogen at a five to 10 times lower cost to users of natural gas to decarbonize industrial heat.
  • Calgary, Alberta-based Highwood Emissions Management's SaaS platform allows oil and gas companies to understand their emissions and develop robust plans to reduce them.
  • Icarus RT, from San Diego, California, improves photovoltaic efficiency while enabling useful heat energy storage.
  • Los Altos, California-based Khepra has developed a chemical manufacturing platform for the low-cost, sustainable production of agrochemicals.
  • Binghamton, New York-based Natrion’s electrolyte is a drop-in solid-state battery component that can be rapidly implemented into existing batteries.
  • Oceanways, based in London, provides low-cost, flexible and scalable zero-emission underwater "virtual pipelines" to energy producers.
  • Relyion Energy, from Santa Clara, California, is developing battery usage and intelligence solutions with deeper data and insights for retired electric vehicle batteries.
  • Massachusetts-based Triton Anchor provides a more cost-effective anchoring solution for offshore clean energy with minimal environmental impact.
  • TROES, from Markham, Ontario, provides a 4-in-1 microgrid solution with integrated hardware and software for a streamlined energy storage experience.
  • Mexico City-based Tycho Solutions supports clean energy project developers by saving time and money during the critical project-siting process.
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Houston’s 10 most valuable startups revealed in new report

by the numbers

The Greater Houston Partnership has released its list of the 10 most valuable startups that are fueling the city’s growth and entrepreneurial energy, including industry giants like Axiom Space and Fervo Energy.

Currently, Houston hosts more than 1,300 startups in industries such as energy, life sciences, manufacturing and aerospace, according to the GHP. The list ranks its top 10 startups by valuation based on the company’s last private funding round, reflected in Pitchbook data, as of Oct. 20 of this year.

The top 10 list includes:

10. NXTClean Fuels

Valuation: $530 million

NXTClean Fuels builds biofuel refineries that produce renewable fuel by using feedstocks like cooking oil and recycled organic materials.

9. Homebase

Valuation: $660 million

HR tech company Homebase provides employee management software that helps manage and optimize timesheets, payroll and more, with over over 100,000 small businesses and 2 million hourly workers using its product.

8. Zolve

Valuation: $800 million

Zolve is a banking platform that provides customers with access to financial products that aim to be accessible, flexible, and affordable than other financial platforms.

7. Stramsen Biotech

Valuation: $807 million

Stramsen Biotech develops plant-based drug therapies that target both infectious and noninfectious diseases, which include cancer, diabetes, HIV, kidney disease and neurological issues.

6. Octagos

Valuation: $843 million

Healthtech company Octagos has developed a remote cardiac monitoring software driven by AI that helps consolidate patient data in real-time, assisting healthcare professionals in providing quicker, easier and more accurate care.

5. Fervo Energy

Valuation: $1.4 billion

Pioneering geothermal company Fervo Energy combines horizontal drilling and fiber-optic sensing to produce electricity. The company is developing its flagship Cape Station geothermal power project in Utah. The first phase of the project will supply 100 megawatts of power beginning in 2026

4.Cart.com

Valuation: $1.7 billion

Cart.com is an e-commerce giant and logistics solutions provider that was founded in 2020 and obtained unicorn status within just three years.

3. Axiom Space

Valuation: $2.1 billion

Axiom Space is one of the anchor tenants at the Houston Spaceport, and has completed four missions of sending commercial astronauts to the ISS since 2022. In 2027, the company expects to see the first section of its private space station, Axiom Station, launched into low-earth orbit.

2. Solugen

Valuation: $2.175 billion

Solugen replaces petroleum-based products with plant-derived substitutes through its Bioforge manufacturing platform.

1. HighRadius

Valuation: $3.2 billion

HighRadius uses advanced technology to automate and manage accounts receivable processes for businesses worldwide.

The GHP also released its State of Houston’s Tech and Innovation Landscape, which mapped Houston’s digital and innovation sectors. Read the full report here.

Photos: Highlights from the 2025 Houston Innovation Awards

Innovation Awards Recap

The 2025 Houston Innovation Awards season came to a close on Nov. 13 at InnovationMap's annual awards program and networking event.

The fifth annual Houston Innovation Awards celebrated more than 40 innovative finalists and crowned 10 winners across prestigious categories. In the weeks leading up to the event, finalists were profiled in our editorial series spotlights. Read all about this year's winners here.

Finalists, judges, and special guests connected during an exclusive VIP reception before the doors officially opened for the evening. A full house of attendees then gathered to celebrate the best and brightest in Houston innovation right now. The night culminated in an awards program, emceed this year by Lawson Gow, Greentown Labs Head of Houston.

Scroll through the photos below for scenes from the event, including the winners, the guests, and more highlights from the program.

Special thanks to this year's sponsors for an unforgettable evening honoring Houston innovation: Houston City College Northwest, Houston Powder Coaters, FLIGHT by Yuengling, William Price Distilling, and Citizens Catering.

2025 Houston Innovation Awards Winners:

Energy Transition Business of the Year: Eclipse Energy. Photo by Emily Jaschke
2025 Houston Innovation Awards Winners:

2025 Houston Innovation Awards Winners, Continued

Minority-founded Business of the Year: Mars Materials. Photo by Emily Jaschke

2025 Houston Innovation Awards Guests 

Photo by Emily Jaschke

More 2025 Houston Innovation Awards Highlights

Photo by Emily Jaschke

Texas ranks among 10 best states to find a job, says new report

jobs report

If you’re hunting for a job in Texas amid a tough employment market, you stand a better chance of landing it here than you might in other states.

A new ranking by personal finance website WalletHub of the best states for jobs puts Texas at No. 7. The Lone Star State lands at No. 2 in the economic environment category and No. 18 in the job market category.

Massachusetts tops the list, and West Virginia appears at the bottom.

To determine the most attractive states for employment, WalletHub compared the 50 states across 34 key indicators of economic health and job market strength. Ranking factors included employment growth, median annual income, and average commute time.

“Living in one of the best states for jobs can provide stable conditions for the long term, helping you ride out the fluctuations that the economy will experience in the future,” WalletHub analyst Chip Lupo says.

In September, Gov. Greg Abbott announced Texas led the U.S. in job creation with the addition of 195,600 jobs over the past 12 months.

“Texas is America’s jobs leader,” Abbott says. “With the best business climate in the nation and a skilled and growing labor force, Texas is where businesses invest, jobs grow, and families thrive. Texas will continue to cut red tape and invest in businesses large and small to spur the economic growth of communities across our great state.”

While Abbott proclaims Texas is “America’s jobs leader,” the state’s level of job creation has recently slowed. In June, the Federal Reserve Bank of Dallas noted that the state’s year-to-date job growth rate had dipped to 1.8 percent, and that even slower job growth was expected in the second half of this year.

The August unemployment rate in Texas stood at 4.1 percent, according to the Texas Workforce Commission. Throughout 2025, the monthly rate in Texas has been either four percent or 4.1 percent.

By comparison, the U.S. unemployment rate in August was 4.3 percent, according to the U.S. Bureau of Labor Statistics. In 2025, the monthly rate for the U.S. has ranged from 4 percent to 4.3 percent.

Here’s a rundown of the August unemployment rates in Texas’ four biggest metro areas:

  • Austin — 3.9 percent
  • Dallas-Fort Worth — 4.4 percent
  • Houston — 5 percent
  • San Antonio — 4.4 percent

Unemployment rates have remained steady this year despite layoffs and hiring freezes driven by economic uncertainty. However, the number of U.S. workers who’ve been without a job for at least 27 weeks has risen by 385,000 this year, the Bureau of Labor Statistics reported in August. That month, long-term unemployed workers accounted for about one-fourth of all unemployed workers.

An August survey by the Federal Reserve Bank of New York showed a record-low 44.9 percent of Americans were confident about finding a job if they lost their current one.