Here's how Houston ranks on annual list of greenest cities in the US

room for improvement

Yikes, Houston is very far from being considered among the greenest cities in the country. Photo via Getty Images

Bad news, Houston. The Bayou City is the third worst metro when it comes to the country's greenest cities.

According to WalletHub's recently released Greenest Cities in America report, Houston is No. 98 out of 100 of the largest cities that were ranked in the study, which was based on information from the U.S. Census Bureau, U.S. Environmental Protection Agency, The Trust for Public Land, U.S. Department of Energy - The Alternative Fuels Data Center, and more.

“There are plenty of things that individuals can do to adopt a green lifestyle, from recycling to sharing rides to installing solar panels on their homes. However, living in one of the greenest cities can make it even easier to care for the environment, due to sustainable laws and policies, access to locally-grown produce and infrastructure that allows residents to use vehicles less often," says Chip Lupo, WalletHub Analyst. "The greenest cities also are better for your health due to superior air and water quality.”

Houston scored 36.88 points out of 100, and comes in dead last on the environment ranking. Here's how the city performs when it comes to the other metrics:

  • No. 87 for transportation
  • No. 52 for energy sources
  • No. 61 for lifestyle and policy
  • No. 91 for greenhouse-gas emissions per capita
  • No. 30 for percent of green space
  • No. 86 for median air quality index
  • No. 97 for annual excess fuel consumption
  • No. 56 for percent of commuters who drive
  • No. 39 for walk score
  • No. 33 for farmers markets per capita

The big winners on the report are mostly on the West Coast. Of the top 10, six cities are from California. These are the greenest cities, per the report:

  1. San Diego, California
  2. Washington, D.C.
  3. Honolulu, Hawaii
  4. San Francisco, California
  5. San Jose, California
  6. Seattle, Washington
  7. Oakland, California
  8. Portland, Oregon
  9. Fremont, California
  10. Irvine, California
Texas isn't seen on the list until Austin, which ranked No. 26. The rest of the major Lone Star State major metros include San Antonio at No. 44, Fort Worth at No. 76, and Dallas at No. 81.While this report is pretty damning, there's not a general consensus that all hope is lost for Houston when it comes to being green. Last year, the city was ranked as having the lowest carbon footprint, based on a report from Park Sleep Fly.

However, WalletHub's report has pretty consistently ranked Houston low on the list. Last year, Houston was slightly higher up at No. 95. In 2022 and 2021, the city claimed the No. 93 spot.

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This article originally ran on EnergyCapital.

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Houston tied with five other cities for the worst greenhouse gas emissions.. Photo via Getty Images

Report: Here's how Houston ranks among the country's greenest cities

Seeing green

Houston may be the energy capital of the world, but it apparently isn't the capital of "greenness."

The Bayou City lands at No. 93 among the 100 largest U.S. cities in a new WalletHub ranking of the country's greenest places. Houston held the same spot in last year's ranking. Aside from being the eighth worst city in the 2021 study, Houston is the lowest-ranked city in Texas.

To determine the cities promoting an environmentally friendly lifestyle, WalletHub compared the 100 largest cities across 28 key "green" indicators. Those factors include greenhouse gas emissions per capita, number of smart energy policies and initiatives, and green job opportunities.

Unfortunately, Houston's overall showing isn't impressive. Here is a sampling, with No. 1 being best, No. 50 being average, and No. 100 being worst:

  • Excess fuel consumption per year, No. 97.
  • Greenhouse gas emissions per capita, No. 94. Houston tied with five other cities for the worst greenhouse gas emissions.
  • Median air quality index, No. 72.
  • Share of commuters who drive, No. 54.
  • Percentage of green space, No. 37.
  • Farmers markets per capita, No. 35.
  • Walkability, No. 34.

Here is how other Texas cities fared:

  • Austin, No. 26.
  • Garland, No. 44.
  • San Antonio, No. 46
  • Laredo, No. 68.
  • El Paso, No. 69.
  • Irving, No. 74.
  • Plano, No. 79.
  • Lubbock, No. 83.
  • Arlington, No. 85.
  • Dallas, No. 89.
  • Corpus Christi, No. 90.

San Diego tops the WalletHub list.As Houston hangs out toward the bottom of the WalletHub ranking, government and business leaders in the region are striving to make Houston greener.

For instance, the City of Houston in August launched a pilot project that will speed up the permitting process for environmentally friendly stormwater projects.

And just this month, Houston Mayor Sylvester Turner declared October 6 as Energy Efficiency Day. The occasion encouraged residents and businesses to support the city's clean energy goals. "Implementing energy efficiency measures is the cheapest, fastest, and cleanest way to reduce Houston's energy demand," the mayor's office says.

In a news release, Laura Patiño, the city's interim chief resilience officer, says Houston must come up with solutions to combat climate change, ensure a "just and equitable" transition to clean energy, and "promote economic growth in an inclusive and transparent manner."

Despite the poor performance in the WalletHub study, Houston continues to make headway in green energy.

For example, Turner in August touted Houston's status as the No. 1 municipal entity in the U.S. for the most annual consumption of power from renewable sources. The U.S. Environmental Protection Agency (EPA) list features participants in its Green Energy Partnership.

In a news release, Turner said the EPA recognition is "great news for the city of Houston and, by extension, for the rest of the world. We are going big to set the example for cities around the world. If 100 percent renewable energy can happen in Houston, it can happen in any other city."

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Venus Aerospace picks up investment from Lockheed Martin Ventures

space funding

Venus Aerospace, a Houston-based startup specializing in next-generation rocket engine propulsion, has received funding from Lockheed Martin Ventures, the investment arm of aerospace and defense contractor Lockheed Martin, for an undisclosed amount. The product lineup at Lockheed Martin includes rockets.

The investment follows Venus’ successful high-thrust test flight of its rotating detonation rocket engine (RDRE) in May. Venus says it’s the only company in the world that makes a flight-proven, high-thrust RDRE with a “clear path to scaled production.”

Venus says the Lockheed Martin Ventures investment reflects the potential of Venus’ dual-use technology for defense and commercial uses.

“Venus has proven in flight the most efficient rocket engine technology in history,” Venus co-founder and CEO Sassie Duggleby, a board member of the Texas Space Commission, said in a news release. “With support from Lockheed Martin Ventures, we will advance our capabilities to deliver at scale and deploy the engine that will power the next 50 years of defense, space, and commercial high-speed aviation.”

Chris Moran, executive director and general manager of Lockheed Martin Ventures, said Lockheed Martin has been a longtime supporter of early-stage “transformational” technologies.

“Our investment in Venus Aerospace reflects a conviction that next-generation propulsion will define which nations lead in space and defense for decades to come,” Moran added in the release. “We are committed to helping Venus scale this technology and integrate it into critical systems.”

Since its founding in 2020, Venus has secured more than $106 million in funding. In addition to Lockheed Martin Ventures, investors include Airbus Ventures, America’s Frontier Fund, Trousdale Ventures, and Prime Movers Lab. Supporters of Venus include NASA, the Air Force Research Lab and the Defense Advanced Research Projects Agency (DARPA).

8+ can't-miss Houston business and innovation events for November

where to be

Editor's note: Houston’s innovation calendar is packed this November, with opportunities to connect across climatetech, health care and entrepreneurship. From Greentown Labs’ flagship summit and veteran-led showcases to discussions on medical innovation and startup growth, here's what not to miss and how to register. Please note: this article may be updated to include additional event listings.

Nov. 4 – Greentown Climatetech Summit

Greentown Labs' Climatetech Summit Houston will bring together philanthropists, executives and innovators in the energy transition space. Expect to hear from John Arnold, co-founder and co-chair of Arnold Ventures, and Greentown CEO Georgina Campbell Flatter, who will participate in the day-long event’s keynote fireside chat, along with remarks from Houston Mayor John Whitmire, a course led by TEX-E Executive Director Sandy Guitar and more. Ten Greentown Labs startups will present pitches, and attendees will also be able to meet founders and Greentown members during the afternoon startup showcase.

This event is Tuesday, Nov. 4, from 8 a.m.-4:30 p.m. at Greentown Labs. A networking reception follows from 5-7:30 p.m. at Axelrad Houston. Learn more here.

Nov. 11 – Veterans & Visionaries

Houston Veteran Network will celebrate the entrepreneurial spirit of veterans at its Veterans & Visionaries event. Veteran business owners will have the opportunity to showcase their businesses, connect with investors and participate in speed networking.

This event is Tuesday, Nov. 11, from 2-7 p.m. at the Ion. Find more information here.

Nov. 12 – Energy Drone and Robotics Forum

The Energy Drone + Robotics Coalition will offer a chance for industry leaders, operators and engineers to connect. Attendees will explore real-world uses, hear lessons from successful deployments, and gain practical insights and tools for scaling through various workshops, keynote addresses, Q&As and more.

This event is Wednesday, Nov. 12, from 8 a.m.-5:30 p.m. at the Ion. A Bots & Brews / Industrial AI Connect Reception will be held at Second Daught from 5:30-7:30 p.m. Find more information here.

Nov. 12 – TMC Envision 2025: Showcasing Healthcare Innovation

Celebrate 10 years of TMC Innovation at Envision, which shines a light on how TMC’s health tech companies are shaping the future. The event will feature talks from TMC’s Devin Dunn, Jason Sakamoto and Tom Luby that will focus on hospital innovation, health care policies, Texas-specific funding and regulatory dynamics and more.

This event is Wednesday, Nov. 12, from 3:30-6:30 p.m. at TMC Innovation Factory. Find more information here.

Nov. 13 — 2025 Houston Innovation Awards

Join InnovationMap at Greentown Labs on Nov. 13 for the fifth annual Houston Innovation Awards. Our annual celebration of all things Houston innovation offers an exclusive opportunity to network with leaders in the innovation ecosystem and culminates in the awards ceremony, where this year's winners across 10 prestigious categories will be unveiled. Individual tickets and corporate 10-packs with reserved seating are still available.

This event is Thursday, Nov. 13 at 7 p.m. at Greentown Labs. Get your tickets here.

Nov. 13 – Houston Methodist Leadership Speaker series

Head to the Houston Methodist Tech Hub at Ion to hear the latest installment of the Houston Methodist Leadership Speaker Series. The month’s event will feature Dr. Shlomit Schaal, executive vice president and chief physician executive at Houston Methodist. She is also the president and CEO of the Houston Methodist Physician Organization. Schaal will focus on physician group innovation.

This event is Thursday, Nov. 13, from 4:45-6 p.m. at the Ion. Find more information here.

Nov. 18 – Rice Customer-based Strategy Symposium

Rice University’s Jones Graduate School of Business will present this recurring forum for exchanging innovative ideas on customer-centered strategy planning and execution. The symposium features peer-reviewed research from leading academics with industry trends and insights from executives. Hear from Jones School Dean Peter Rodriguez, Harris County Sheriff Ed Gonzalez, Laura Lopez, SVP of marketing, communications and public relations at Houston Methodist; Farid Virani, CEO of Prime Communications; and several Rice MBA graduates and executives.

This event is Tuesday, Nov. 18, 2025, from 7:30 a.m.-3:00 p.m. at the Ion. Learn more here.

Nov. 20 – Houston Startup Speedrun

Wade Pinder, founder of Product Houston, will host the Houston Startup Speedrun. This intensive and fast-paced program is designed to provide early-stage founders and aspiring entrepreneurs with a comprehensive understanding of the “Startup Founder's Journey” and the Houston startup ecosystem. The event is broken up into 10 consecutive 50-minute sessions, including topics such as “Creating a Compelling Business Plan,” “Operations and Scaling” and others.

This event is Thursday, Nov. 20, from 9 a.m.-7 p.m. at the Ion. Find more information here.

Nov. 20 – State of the Texas Medical Center

The Greater Houston Partnership will present the State of the Texas Medical Center. Hear from William F. McKeon, president and CEO of TMC, and GHP president and CEO Steve Kean as they discuss “the tremendous progress happening in health care delivery and life sciences in the world’s largest medical center.”

This event is Thursday, Nov. 20, from 4-6:30 p.m. at Helix Park. Find more information here.

Houston's most promising health tech startups lead innovation news to know

Trending Topics

Editor's note: As October comes to a close, we're looking back at the biggest innovation stories in recent weeks. From innovations in health tech to Mark Cuban's hot take on AI, here are the top InnovationMap stories from Oct. 15-31:

1. 6 Houston health tech startups making major advancements right now

Tatiana Fofanova and Dr. Desh Mohan, founders of Koda Health. Photo courtesy Koda Health.

The Health Tech Business category in our 2025 Houston Innovation Awards (taking place Nov. 13) will honor an innovative startup within the health and medical technology sectors. Six forward-thinking businesses have been named finalists for the 2025 award. They range from an end-of-life care company to others developing devices and systems for heart monitoring, sleep apnea, hearing loss and more. Continue reading.

2. 7 innovative startups that are leading the energy transition in Houston

Houston-based Solidec was founded around innovations developed by Rice University associate professor Haotian Wang (far left). Photo courtesy Greentown Labs.

As part of the 2025 Houston Innovation Awards, our Energy Transition Business category honors innovative startups that are providing solution within renewables, climatetech, clean energy, alternative materials, circular economy, and more. Seven energy transition companies have been named finalists for the 2025 award. They range from a spinoff stimulating subsurface hydrogen from end-of-life oil fields to a company converting prickly pear cactus biogas into energy. Continue reading.

3. Mark Cuban calls AI ‘the greater democratizer’ for young entrepreneurs

Mark Cuban described AI as "the great democratizer" for low-income, young people at the Clover x Shark Tank Summit this month. Photo courtesy Clover.

Texas billionaire Mark Cuban—whose investment portfolio includes Houston-based Holliball, a startup that makes and sells large inflatable holiday ornaments—believes AI is leveling the playing field for budding low-income entrepreneurs. At the recent Clover x Shark Tank Summit in Las Vegas, the Shark Tank alum called AI “the greater democratizer.” Continue reading.

4. CPRIT hires MD Anderson official as chief cancer prevention officer

Ruth Rechis has been named chief prevention officer of the Cancer Prevention and Research Institute of Texas. Photo courtesy CPRIT.

The Austin-based Cancer Prevention and Research Institute of Texas, which provides funding for cancer research across the state, has hired Ruth Rechis as its chief prevention officer. She comes to CPRIT from Houston’s University of Texas MD Anderson Cancer Center, where she led the Cancer Prevention and Control Platform. Continue reading.

5. Axiom Space announces new CEO amid strategic leadership change

Axiom Space has named Jonathan Cirtain as its new CEO. Photo via axiomspace.com.

Six months after promoting Tejpaul Bhatia from chief revenue officer to CEO, commercial space infrastructure and human spaceflight services provider Axiom Space has replaced him. On Oct. 15, Houston-based Axiom announced Jonathan Cirtain has succeeded Bhatia as CEO. Bhatia joined Axiom in 2021. Cirtain remains the company’s president, a role he assumed in June. Continue reading.

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