Experts from the University of Houston are teaming up with the city on key sustainability efforts.

Researchers at the University of Houston are partnering with the Harris County Office of County Administration’s Sustainability Office, the Harris County Energy Management Team, and other county staff in an effort to develop a comprehensive baseline of energy use and energy-use intensity that will aim to reduce energy costs and emissions in county facilities.

Once fully established, the team will work on tracking progress and evaluating the effectiveness of energy-saving measures over time. They will begin to build the foundation for future programs aimed at maximizing savings, reducing energy consumption, and increasing the use of renewable energy sources in county operations.

Harris County energy managers, Glen Rhoden and Yas Ahmadi, will work with UH professionals, including:

  • Jian Shi, UH Cullen College of Engineering associate professor of engineering technology and electrical and computer engineering
  • Zhu Han, Moores professor of electrical and computer engineering
  • Xidan "Delia" Zhang, UH research intern

The group began collaborating a year ago, and analyzed energy consumption data from county facilities.They were able to successfully identify key summertime energy-saving opportunities and completed retro-commissioning of four county buildings. Those efforts saved over $230,000 annually in electricity costs.

“This project is a prime example of how impactful research at UH can be when applied to real-world challenges, delivering tangible benefits to both the environment and the communities we serve,” Shi says in a news release.

The team will plan to do additional building projects, which includes the development of solar energy and heat pump initiatives, building automation system upgrades, and LED lighting installations. The goal is to reduce electricity usage by at least 5 percent per year for county facilities by 2030 and cut greenhouse gas emissions by 50 percent over the next 5 years for county buildings.

“Addressing climate change and the energy transition requires a collaborative effort that is not only data-driven and action-oriented but also human-centric,” Shi adds. “It’s about more than just technology—it’s about improving the quality of life for Texans.”

The rule will apply to 218 facilities spread across Texas and Louisiana, the Ohio River Valley, West Virginia and the upper South. Photo via Getty Images

New EPA rule says 200 US chemical plants in Texas, beyond must reduce cancer-causing toxic emissions

mission: lower emissions

More than 200 chemical plants nationwide will be required to reduce toxic emissions that are likely to cause cancer under a new rule issued Tuesday by the Environmental Protection Agency. The rule advances President Joe Biden’s commitment to environmental justice by delivering critical health protections for communities burdened by industrial pollution from ethylene oxide, chloroprene and other dangerous chemicals, officials said.

Areas that will benefit from the new rule include majority-Black neighborhoods outside New Orleans that EPA Administrator Michael Regan visited as part of his 2021 Journey to Justice tour. The rule will significantly reduce emissions of chloroprene and other harmful pollutants at the Denka Performance Elastomer facility in LaPlace, Louisiana, the largest source of chloroprene emissions in the country, Regan said.

“Every community in this country deserves to breathe clean air. That’s why I took the Journey to Justice tour to communities like St. John the Baptist Parish, where residents have borne the brunt of toxic air for far too long,” Regan said. “We promised to listen to folks that are suffering from pollution and act to protect them. Today we deliver on that promise with strong final standards to slash pollution, reduce cancer risk and ensure cleaner air for nearby communities.”

When combined with a rule issued last month cracking down on ethylene oxide emissions from commercial sterilizers used to clean medical equipment, the new rule will reduce ethylene oxide and chloroprene emissions by nearly 80%, officials said.

The rule will apply to 218 facilities spread across Texas and Louisiana, the Ohio River Valley, West Virginia and the upper South, the EPA said. The action updates several regulations on chemical plant emissions that have not been tightened in nearly two decades.

Democratic Rep. Troy Carter, whose Louisiana district includes the Denka plant, called the new rule “a monumental step" to safeguard public health and the environment.

“Communities deserve to be safe. I've said this all along,'' Carter told reporters at a briefing Monday. "It must begin with proper regulation. It must begin with listening to the people who are impacted in the neighborhoods, who undoubtedly have suffered the cost of being in close proximity of chemical plants — but not just chemical plants, chemical plants that don’t follow the rules.''

Carter said it was "critically important that measures like this are demonstrated to keep the confidence of the American people.''

The new rule will slash more than 6,200 tons (5,624 metric tonnes) of toxic air pollutants annually and implement fenceline monitoring, the EPA said, addressing health risks in surrounding communities and promoting environmental justice in Louisiana and other states.

The Justice Department sued Denka last year, saying it had been releasing unsafe concentrations of chloroprene near homes and schools. Federal regulators had determined in 2016 that chloroprene emissions from the Denka plant were contributing to the highest cancer risk of any place in the United States.

Denka, a Japanese company that bought the former DuPont rubber-making plant in 2015, said it “vehemently opposes” the EPA’s latest action.

“EPA’s rulemaking is yet another attempt to drive a policy agenda that is unsupported by the law or the science,” Denka said in a statement, adding that the agency has alleged its facility “represents a danger to its community, despite the facility’s compliance with its federal and state air permitting requirements.”

The Denka plant, which makes synthetic rubber, has been at the center of protests over pollution in majority-Black communities and EPA efforts to curb chloroprene emissions, particularly in the Mississippi River Chemical Corridor, an 85-mile (137-kilometer) industrial region known informally as Cancer Alley. Denka said it already has invested more than $35 million to reduce chloroprene emissions.

The EPA, under pressure from local activists, agreed to open a civil rights investigation of the plant to determine if state officials were putting Black residents at increased cancer risk. But in June the EPA dropped its investigation without releasing any official findings and without any commitments from the state to change its practices.

Regan said the rule issued Tuesday was separate from the civil rights investigation. He called the rule “very ambitious,'' adding that officials took care to ensure “that we protect all of these communities, not just those in Cancer Alley, but communities in Texas and Puerto Rico and other areas that are threatened by these hazardous air toxic pollutants.''

While it focuses on toxic emissions, “by its very nature, this rule is providing protection to environmental justice communities — Black and brown communities, low-income communities — that have suffered for far too long,'' Regan said.

Patrice Simms, vice president of the environmental law firm Earthjustice, called the rule “a victory in our pursuit for environmental justice.”

“There’s always more to do to demand that our laws live up to their full potential,” Simms said, "but EPA's action today brings us a meaningful step closer to realizing the promise of clean air, the promise of safe and livable communities and ... more just and more equitable environmental protections.''

bp is now using Baker Hughes emissions abatement technology, flare.IQ, to quantify methane emissions from its flares. Photo via Canva

Baker Hughes, bp team up on flare emissions monitoring tech

partnerships

Two energy companies with Houston headquarters are collaborating on flare emissions monitoring.

According to a news release, bp is now using Baker Hughes emissions abatement technology, flare.IQ, to quantify "methane emissions from its flares, a new application for the upstream oil and gas sector." The statement goes on to explain that the industry doesn't have a to methane emission quantifying, and that bp ad Baker Hughes has facilitated a large, full-scale series of studies on the technology.

Now, bp is utilizing 65 flares across seven regions to reduce emissions.

“bp’s transformation is underway, turning strategy into action through delivery of our targets and aims. We don’t have all the answers, and we certainly can’t do this on our own," Fawaz Bitar, bp senior vice president of Health Safety Environment & Carbon, says in the release. "Through our long-standing partnership with Baker Hughes, we have progressed technology and implemented methane quantification for oil and gas flares, helping us to achieve the first milestone of our Aim 4. We continue to look at opportunities like this, where we can collaborate across the industry to find solutions to our biggest challenges."

The flare.IQ technology is a part of Baker Hughes’ Panametrics product line portfolio, and it builds on 40 years of ultrasonic flare metering technology experience. The advanced analytics platform provides operators with real-time, decision-making data.

“Our collaboration with bp is an important landmark and a further illustration that technology is a key enabler for addressing the energy trilemma of security, sustainability and affordability,” Ganesh Ramaswamy, executive vice president of Industrial & Energy Technology at Baker Hughes, says in the release. “As a leader in developing climate technology solutions, such as our flare.IQ emissions monitoring and abatement technology, cooperations like the one we have with bp are key to testing and validating in the field solutions that can enable operators to achieve emissions reduction goals efficiently and economically.”

Houston climate tech founder weighs in on his observations on what's true, what's exaggerated, and what all humans can agree on about the climate crisis. Photo via Getty Imagees

Houston expert: Why climate action needs better PR and how to love the climate apocalypse

guest column

The last thing anyone wants in 2024 is a reminder of the impending climate apocalypse, but here it is: There is a scientific consensus that the world climate is trending towards uninhabitable for many species, including humans, due in large part to results of human activity.

Psychologists today observe a growing trend of patients with eco-anxiety or climate doom, reflecting some people’s inability to cope with their climate fears. The Edelman Trust Barometer, in its most recent survey respondents in 14 countries, reports that 93 percent “believe that climate change poses a serious and imminent threat to the planet.”

Until recently reviewing this report, I was unaware that 93 percent of any of us could agree on anything. It got me thinking, how much of our problem today is based on misunderstanding both the nature of the problem and the solution?

We’ve been worried for good reason before 

It’s worth keeping in mind that climate change is not the first time smart people thought humans were doomed by our own successes or failures. Robert Malthus theorized at the end of the 18th century that projected human fertility would certainly outpace agricultural production. Just a century and a half later, about half of all Americans expected a nuclear war, and the number jumped to as high as 80 percent expecting the next war to be nuclear. Yes, global hunger and nuclear threats still exist, but our results have outperformed the worst of those dire projections.

We are worried for good reason today 

Today changing climate conditions have grabbed the headlines. The world’s climate is changing at a rate faster than we can model effectively, though our best modeling suggests significant, coordinated, global efforts are necessary to reverse current trends. While there’s still lots to learn, the consensus is that we are approaching a global temperature barrier across which we may not be able to quickly return. These conclusions are worrisome.

How did we get here?

Our reliance on hydrocarbons is at the heart of our climate challenge. If combusting them is so damaging, why do we keep doing it? We know enough about our human cognitive biases to say that humans tend to “live in the moment” when it comes to decision making. Nobel Prize-winning economic research suggests we choose behaviors that reward us today rather than those with longer term payoffs. Also, changing behaviors around hydrocarbons is hard. Crude oil, natural gas and coal have played a central role in the reduction of human suffering over time, helping to lift entire populations out of poverty, providing the power for our modern lives and even supplying instrumental materials for clothes and packaging. It’s hard to stop relying on a resource so plentiful, versatile and reliable.

How do we get out of here?

Technological advances in the future may help us address climate in new and unexpected ways. If we do nothing and hope for the best, what’s the alternative? We can take confidence that we’ve addressed difficult problems before. We can also take confidence that advancements like nuclear, solar, geothermal and wind power are already supplementing our primary reliance on hydrocarbons.

The path forward will be extending the utility of these existing alternatives and identifying new technologies. We need to reduce emissions and to withdraw greenhouse gasses (GHGs) that have already been emitted. The nascent energy transition will continue to be funded by venture capitalists, government spending/incentives and private philanthropy. Larger funding sources will come from private equity and public markets, as successful technologies compete for more traditional sources of capital.

Climate Tech will be a large piece of the climate puzzle

My biases are likely clear: the same global capitalism that brought about our complicated modern world, with its apparent abundance and related climate consequences, has the best chance to save us. Early stage climate tech funding is increasing, even if it’s still too small. It has been observed that climate tech startups receiving funding today fail to track solutions for industries in proportion to their related production of GHGs. For instance, the agriculture and food sector creates about 18 percent of global GHGs, while climate tech companies seeking to address that sector receive about 9 percent of climate tech funding. These misalignments aside, the trendlines are in the right direction.

What can you do?

From a psychological perspective, healthy coping means making small decisions that address your fears, even if you can’t eliminate the root causes. Where does that leave you?

Be a voice for reasonable change. Make changes in your behavior where and when you can. Also, take comfort when you see existing industries adopting meaningful sustainable practices at faster rates. Support the companies you believe are part of the solution.

We are already seeing a burgeoning climate tech industry across the globe and here at home. With concerted efforts like the Ion and Greentown Labs, the Houston climate tech sector is helping to lead the charge. In what was even recently an unthinkable reality, the United States has taken a leadership role. Tellingly, we are not leading necessarily by setting targets, but instead by funding young startups and new infrastructure like the hydrogen hubs. We don’t know when or where the next Thomas Edison will emerge to shine a new light in a dark world. However, I do suspect that that woman or man is alive today, and it’s our job to keep building a world worth that person saving.

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Chris Wood is the co-founder of Houston-based Moonshot Compost.

"To solve the climate crisis, confidence in emissions data is crucial." Photo via Getty Images

Expert: Using data to reduce Houston’s oil and gas carbon footprint

guest column

Sustainability has been top of mind for all industries as we witness movements towards reducing carbon emissions. For instance, last year, the Securities and Exchange Commission (SEC) proposed a new rule that requires companies to disclose certain climate-related activities in their reporting on a federal level. Now, industries and cities are scrambling to ensure they have strategies in the right place.

While the data behind sustainability poses challenges across industries, it is particularly evident in oil and gas, as their role in energy transition is of the utmost importance, especially in Texas. We saw this at the COP26 summit in Glasgow in November 2021, for example, in the effort to reduce carbon emissions on both a national and international scale and keep global warming within 1.5 degrees Celsius.

The event also made it clear achieving this temperature change to meet carbon neutrality by 2030 won’t be possible if organizations rely on current methods and siloed data. In short, there is a data problem associated with recent climate goals. So, what does that mean for Houston’s oil and gas industry?

Climate is a critical conversation – and tech can help

Houston has long been considered the oil and gas capital of the world, and it is now the epicenter of energy transition. You can see this commitment by the industry in the nature of the conferences as well as the investment in innovation centers.

In terms of the companies themselves, over the past few years each of the major oil and gas players have organized and grown their low carbon business units. These units are focused on bringing new ideas to the energy ecosystem. The best part is they are not working alone but joining forces to find solutions. One of the highest profile examples is ExxonMobil’s Carbon Capture and Underground Storage project (CCUS) which directly supports the Paris Agreement.

Blockchain technology is needed to improve transparency and traceability in the energy sector and backing blockchain into day-to-day business is key to identifying patterns and making decisions from the data.

The recent Blockchain for Oil and Gas conference, for instance, focused on how blockchain can help curate emissions across the ecosystem. Recent years have also seen several additional symposiums and meetings – such as the Ion and

Greentown Houston – that focus on helping companies understand their carbon footprint.

How do we prove the data?

The importance of harmonizing data will become even more important as the SEC looks to bring structure to sustainability reporting. As a decentralized, immutable ledger where data can be inputted and shared at every point of action, blockchain works by storing information in interconnected blocks and providing a value-add for insuring carbon offsets. To access the data inside a block, users first need to communicate with it. This creates a chain of information that cannot be hacked and can be transmitted between all relevant parties throughout the supply chain. Key players can enter, view, and analyze the same data points securely and with assurance of the data’s accuracy.

Data needs to move with products throughout the supply chain to create an overall number for carbon emissions. Blockchain’s decentralization offers value to organizations and their respective industries so that higher quantities of reliable data can be shared between all parties to shine a light on the areas they need to work on, such as manufacturing operations and the offsets of buildings. Baking blockchain into day-to-day business practice is key in identifying patterns over time and making data-backed decisions.

Oil and gas are key players

Cutting emissions is not a new practice of the oil and gas industry. In fact, they’ve been cutting emissions estimates by as much as 50 percent to avoid over-reporting.

The traditional process of reporting data has also been time-consuming and prone to human error. Manually gathering data across multiple sources of information delivers no real way to trace this information across supply chains and back to the source. And human errors, even if they are accidental, pose a risk to hefty fines from regulatory agencies.

It’s a now-or-never situation. The industry will need to pivot their approaches to data gathering, sharing, and reporting to commit to emissions reduction. This need will surely accelerate the use of technologies, like blockchain, to be a part of the energy transition. While the climate challenges we face are alarming, they provide the basis we need for technological innovation and the ability to accurately report emissions to stay in compliance.

The Energy Capital of the World, for good

To solve the climate crisis, confidence in emissions data is crucial. Blockchain provides that as well as transparency and reliability, all while maintaining the highest levels of security. The technology provides assurance that the data from other smart technologies, like connected sensors and the Internet of Things (IoT), is trustworthy and accurate.

The need for good data, new technology, and corporate commitment are all key to Houston keeping its title as the energy capital of the world – based on traditional fossil fuels as well as transitioning to clean energy.

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John Chappell is the director of energy business development at BlockApps. This article originally ran on InnovationMap.


Soon, you'll be able to cruise to your destination without a driver in Houston. Photo via Cruise/Facebook

Self-driving rideshare company cruises its robotaxies into Houston

LOOK MA, NO DRIVER

A new driverless ridehail service is coming to Houston: Cruise, the all-electric, driverless car company backed by GM, is expanding in Texas with launches in both Dallas and the Bayou City.

This follows an initial launch in Austin in 2022, their first city in Texas.

Cruise builds and operates driverless vehicles that you can call via an app, like any other ride hailing service. "But our vehicles show up without anyone else inside," they say.

The entire fleet is all-electric and the vehicles are equipped with a 360-view, with the ability to react to whatever they encounter on the road.

They test their vehicles using simulations, through millions of scenarios and virtual miles; they’ve also driven more than 4 million real miles, mostly in San Francisco.

They have not defined what the cost will be but according to The Verge, the rates in San Francisco vary depending on length of trip and time of day: "A customer taking a 1.3-mile trip would pay 90 cents per mile and 40 cents per minute, in addition to a $5 base fee and 1.5 percent city tax, for a total of $8.72." By comparison, an Uber ride for the same trip would cost at least $10.41.

The company was founded in 2013 and vehicles began to hit the road in 2022. They operate a total fleet of roughly 300 all-electric AVs, powered 100 percent by renewable energy. In addition to Austin, they operate in San Francisco and Phoenix, where they've completed 35,000 self-driving deliveries in a partnership with Walmart.

According to a statement from CEO Kyle Vogt, they'll begin supervised driving (with a safety driver behind the wheel) in Houston as they finetune their AI technology to understand the nuances and unique elements of the city, with Dallas to follow shortly after.

In a blog post, Vogt says their cars drive the speed limit and come to a complete stop at every stop sign. They respond to police sirens, flashing lights on fire trucks or ambulances, and stop signs that fold out of school buses.

They react to people on scooters, people using bike lanes, and cars driving on the wrong side of the road. "In short, they are designed to drive safely by obeying the law and driving in a humanlike way," he says. Actually, that sounds better than humans.

When vehicles encounter a situation where they aren’t 100 percent sure of what to do, they slow down or stop and pull over to the side of the road. This has caused some bumps in San Francisco where cars stopped and idled in the street for no apparent reason, delaying bus riders and disrupting the work of firefighters.

Some of the "bumps" have been comical, such as the 2022 incident in which a confused San Francisco police officer pulled a Cruise over, and then the Cruise drove away.

And as Reuters notes, autonomous vehicles have not rolled out as fast as anticipated, due to regulations, safety investigations, and arduous technology.

When Cruise first enters a city, they hire a mapping and data collection team to learn bike lanes, school zones, and major intersections. But most of the time, the vehicles will be carrying riders in the back seat, or completely empty and en route to another pickup.

The company partners with first responders, including police and fire departments, to ensure they’re ready and familiar with how to interact with the vehicles, engaging with those agencies before and after launch.

"Our guiding mission has always been to improve road safety, reduce emissions, and reduce congestion with our driverless ride-hail service in cities, which is where we’ll see the most significant positive impact the soonest," Vogt says. "Houston and Dallas are committed to reducing traffic deaths as part of their Vision Zero commitments, and we are excited to operate in and partner with these new communities in this shared mission."

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This article originally ran on CultureMap.

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Houston-based autonomous trucking tech co. raises $20M

fresh funding

A Houston-based autonomous vehicle technology company has raised early funding.

Bot Auto has announced the completion of its pre-series A funding round which was oversubscribed and raised $20 million. The round was led by investments from Brightway Future Capital, Cherubic Ventures, EnvisionX Capital, First Star Ventures, Linear Capital, M31 Capital, Taihill Venture, Uphonest Capital, and Welight Capital.

“As true believers in autonomous trucking, we're thankful for our investors' shared vision,” Xiaodi Hou, founder and CEO of Bot Auto, says in a news release. “Our strong commitment, combined with recent AI advancements and a sharpened focus on operational efficiency, has created a clear path to commercialization.”

The funds raised will be focused on developing the technology and will opt to avoid unnecessary hiring ahead of operational maturity, scaling the operational footprint prior to product readiness, over expansion and partnership debt. The company aims for a more sustainable and efficient future, and is hoping its engineers and AV executives help Bot Auto become an autonomous trucking game changer.

The Investment is expected to help expand Bot Auto's tech development in autonomous trucking that will focus on safety and operation efficiency.

“Our prospects for success have never been more promising,” Hou adds. “ We march forward, committed to bringing this transformative technology to humanity for a brighter future.”

Bot Auto’s vision aligns with the pioneering spirit of Houston’s legacy in space exploration, striving to achieve remarkable feats in technology and transportation. The company is dedicated to leveraging this investment to make significant strides in the US autonomous trucking industry, ultimately contributing to a more sustainable and efficient future.

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This article originally ran on InnovationMap.

Texas-based Tesla posts first quarterly increase in deliveries, but shares slump

mixed feelings

Low interest financing, sweet lease deals, price cuts and free charging boosted Tesla’s global deliveries in the third quarter, the first increase this year for the electric vehicle maker.

The Austin, Texas, company said Wednesday that it delivered 462,890 vehicles from July through September, bolstered by loans as low as 1.99%, and $299 monthly leases on the Model 3, its least expensive vehicle. It delivered 435,059 vehicles during the same period last year.

The figures for July through September came in slightly higher than analyst estimates of 462,000 for the period, according to data provider FactSet.

However, shares of Tesla Inc. dropped sharply in morning trading, down nearly 4%.

The deliveries were “good and a step in the right direction,” wrote Dan Ives of Wedbush, but that there would be pressure on the company's stock because investors had been hoping for even better.

“Overall, this is a clear improvement from the first half and we believe getting in the range of 1.8 million for the year is still the key and important bogey,” Ives said.

Tesla has struggled much of the year to sell its aging model lineup as growth in electric vehicle sales in the U.S. and Europe slowed due to concerns with range, price and the ability to charge on trips.

Falling sales early in the year led to once-unheard of discounts for the automaker, cutting into its industry leading profit margins. Analysts estimated that Tesla’s average vehicle sales price was $42,500 for the third quarter, the lowest price in four years.

The sales decline likely will pull down third quarter earnings when they are announced on Oct. 23.

Tesla’s sales decline comes as competition is increasing from legacy and startup automakers, which are trying to nibble away at the company’s market share.

Nearly all of Tesla’s sales came from the smaller and less-expensive Models 3 and Y, with the company selling only 22,915 of its more expensive models that include X and S, as well as the new Cybertruck.

Wedbush analyst Dan Ives wrote in a note to investors Tuesday that third-quarter sales would bring a rebound as China sales continue to increase and price and demand stabilizes.” As China continues to heat up on the demand story for Tesla with favorable leasing/financing terms and pent-up demand in the region, we are confident that we will see a significant growth figure in the region,” he wrote.

Europe will continue to be slow with macroeconomic pressures, and U.S. demand should stabilize, Ives wrote.

But BNP Paribas Exane said in an investor note that long term expectations of the market are somewhat high for Tesla. The company said its sales estimates for 2026 and 2027 “remain 10% to 15% below the street, respectively.”

Tesla is scheduled to unveil a purpose built robotaxi at an event next week.

Houston receives abysmal ranking on list of greenest cities in the US

room for improvement

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.