Texas ranked in the bottom half on WalletHub's list of the most energy-efficient states. Photo via unsplash.

Texas has room to improve when it comes to energy efficiency, recent data from WalletHub shows.

The personal finance website ranked Texas at No. 35 on the latest Most & Least Energy-Efficient States list. Texas improved by one spot on the 2025 report, after coming in at No. 36 last year.

The report measured and ranked the efficiency of auto energy and home energy consumption in the 48 U.S. mainland states based on data from the U.S. Census Bureau, National Climatic Data Center, U.S. Energy Information Administration and the U.S. Department of Transportation – Federal Highway Administration.

Texas earned an overall score of 50.60. It was ranked No. 27 for home energy efficiency and No. 41 for auto efficiency. By comparison, No. 1-ranked Vermont earned a score of 85.30, ranking No. 2 for home energy and No. 6 for out energy.

The top five overall states included:

  • No. 1 Vermont
  • No. 2 California
  • No. 3 Washington
  • No. 4 New York
  • No. 5 Massachusetts

South Dakota earned the top rank for home energy efficiency, and Massachusetts earned the top rank for energy efficiency.

“Energy efficiency doesn’t just help save the planet – it also helps save you money by lowering the amount of electricity, gas, oil or other types of energy you need to consume. While there are some steps you can take to become more energy-efficient on your own, living in the right area can give you a big boost," WalletHub analyst Chip Lupo said in the report. "For example, certain states have much better public transportation systems that minimize your need to drive, at least in big cities. Some places also have better-constructed buildings that retain heat better during the winter or stay cooler during the summer.”

According to the report, some progress is being made in increasing energy efficiency across the country. The U.S. Energy Information Administration expects 26 percent of electricity generation in 2026 will come from renewables. A number of them are being developed in the Houston area, including recent announcements like the Pleasure Island Power Collective in Port Arthur.

Still, Houston earned an abysmal ranking on WalletHub's greenest cities in the U.S. report earlier this year, coming in at No. 99 out of 100. Read more here.

Houston had two big strikes against it on WalletHub's Greenest Cities in America report. Photo via Getty Images.

Houston ranks No. 99 out of 100 on new report of greenest U.S. cities

Sustainability Slide

Houstonians may be feeling blue about a new ranking of the greenest cities in the U.S.

Among the country’s 100 largest cities based on population, Houston ranks 99th across 28 key indicators of “green” living in a new study from personal finance website WalletHub. The only city with a lower ranking is Glendale, Arizona. Last year, Houston landed at No. 98 on the WalletHub list.

“‘Green’ living means a choice to engage in cleaner, more sustainable habits in order to preserve the planet as much as possible,” WalletHub says.

Among the study’s ranking factors are the amount of greenhouse gas emissions per capita, the number of “smart energy” policies, and the presence of “green job” programs.

In the study, Houston received an overall score of 35.64 out of 100. WalletHub put its findings into four buckets, with Houston ranked 100th in the environment and transportation categories, 56th in the lifestyle and policy category, and 52nd in the energy sources category.

In the environment category, Houston has two big strikes against it. The metro area ranks among the 10 worst places for ozone pollution (No. 7) and year-round particle pollution (No. 8), according to the American Lung Association’s 2025 list of the most polluted cities.

In the WalletHub study, San Jose, California, earns the honor of being the country’s greenest city. It’s followed by Washington, D.C.; Oakland, California; Irvine, California; and San Francisco.

“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,” WalletHub analyst Chip Lupo said in the report. “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. The greenest cities also are better for your health due to superior air and water quality.”

Texas fell four spots on WalletHub's annual Greenest States report. Photo via Pexels

Texas falls lower on national ranking of greenest states for 2025

room to improve

Texas dropped in the rankings on WalletHub's Greenest States 2025 report.

The report, released last month, considered 28 relevant metrics—from air and water quality to the number of alternative fuel stations and green buildings per capita—to call out states doing the best (and worst) jobs of caring for the environment.

Texas came in at No. 42 out of 50, with a total score of 42.54 out of 100. Last year, the Lone Star State ranked No. 38 with a score of 50.40 based on 25 metrics.

Texas' poor ranking was driven by its last-placed ranking, coming in at No. 50, for overall environmental quality. It was tied for No. 45 for air quality and ranked No. 46 for water quality, which helped comprise the overall environmental quality score.

Other metrics fell closer toward the middle of the pack. The state ranked No. 32 for eco-friendly behaviors and No. 39 for climate-change contributions.

California also fell on the annual report. While the state claimed the top spot in 2024, it came in at No. 7 this year. Vermont, which came in second in 2024, was named the greenest state in 2025.

Hawaii, which didn't crack the top five last year, was ranked No. 2 on the 2025 report. New York, Maryland and Maine rounded out the top five this year.

West Virginia was the country's least green state again this year, followed by Louisiana, Kentucky, Alabama and Mississippi.

The report also showed that Democrat-led states ranked around No. 12 on average, whereas Republican states fell at around No. 33.

While the WalletHub report seems bleak for Texas, others have shown more positive signs for the state. Texas was ranked slightly above average in a recent ranking of the best states for sustainable development. A recently released U.S. Energy Storage Monitor shows that Texas led all states and surpassed California in the fourth quarter of 2024 by installing 1.2 gigawatts of utility-scale energy storage for solar and wind power.

Still, WalletHub also recently ranked Houston No. 98 out of 100 of the largest cities on its Greenest Cities in America report. Read more here.

Source: WalletHub
The report ranked each state on both its home and auto efficiency. Photo via Getty Images

Here's how Texas ranks as an energy efficient state

by the numbers

How energy efficient is the Lone Star State? A new report finds that Texas has some room for improvement in that department.

In its 2024 "Most & Least Energy-Efficient States" report, WalletHub ranks Texas at No. 36 out of the 50 states with a score of 47.5 out of 100 points.

The report ranked each state on both its home and auto efficiency. Texas came in No. 32 for home energy efficiency, which factored in the National Weather Service's annual degree days.

For auto efficiency, Texas came in at No. 38, but ranked No. 43 for vehicle-fuel efficiency specifically and No. 20 for transportation efficiency.

"We divided the annual vehicle miles driven by gallons of gasoline consumed to determine vehicle-fuel efficiency and measured annual vehicle miles driven per capita to determine transportation efficiency," according to WalletHub, which used data from the U.S. Census Bureau, National Climatic Data Center, U.S. Energy Information Administration, and U.S. Department of Transportation - Federal Highway Administration.


Source: WalletHub

Texas receives mixed reviews when it comes to energy reports from WalletHub. A June report found that Texas ranked as the fourth cheapest state for energy, and in April the state was found to be the thirteenth least green state.

Zooming in on Houston, the reports don't look any better. Earlier this month, the Bayou City was ranked the third worst metro when it comes to the country's greenest cities.

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

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.

Texas's evolving energy landscape means affordability for residents, a new report finds. Photo via Pexels

Here's how Texas ranks when it comes to energy affordability

$$$

The Lone Star State is an economical option when it comes to energy costs, one report has found.

WalletHub, a personal finance website, analyzed energy affordability across the 50 states in its new report, Energy Costs by State in 2024, which looked at residential energy types: electricity, natural gas, motor fuel and home heating oil.

Texas ranked as the fourth cheapest state for energy, or No. 47 in the report that sorted by most expensive average monthly energy bill. Texans' average energy cost per month is $437, the report found.


Source: WalletHub

Here's how Texas ranked in key categories, with No. 1 being the most expensive and No. 50 being the cheapest:

  • No. 27 – price of electricity
  • No. 15 – price of natural gas
  • No. 44 – natural-gas consumption per consumer
  • No. 40 – price of motor fuel
  • No. 16 – motor-fuel consumption per driver
  • No. 49 – home heating-oil consumption per consumer

With the most expensive state — Wyoming — being over four times the cost compared to the cheapest state — New Mexico, the difference between energy costs between states varies greatly, but the reason for that isn't exactly a mystery.

“Energy prices vary from state to state based on several factors including energy sources, supply and demand, energy regulation, regulatory authorities, competition, and the free market," explains expert Justin Perryman, a professor at Washington University School of Law. "[States] such as Texas have a deregulated electricity marketplace. Missouri and 17 other states have a regulated energy market. In deregulated markets there are typically more energy providers which often leads to more competition and lower prices; however, other factors can contribute to energy prices.

"In regulated markets, the state energy regulatory authority sets the prices of energy," he continues. "It can be politically unpopular to raise energy costs, so those states may benefit from lower energy costs. Factors such as the state’s commitment to renewable energy may also factor into energy costs. Proximity to less expensive energy sources can lower energy costs.”

Texas's evolving energy landscape has been well documented, and earlier this year the state's solar energy generation surpassed the output by coal, according to a report from the Institute For Energy Economics and Financial Analysis.

A separate report found that, when compared to other states, Texas will account for the biggest share of new utility-scale solar capacity and new battery storage capacity in 2024. According to the U.S. Energy Information Administration, the state will make up 35 percent of new utility-scale solar capacity in the U.S. this year.

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Investors close partial acquisition of Phillips 66 subsidiary with growing EV network

M&A activity

Energy Equation Partners, a London-based investment firm focused on clean energy companies, and New York-based Stonepeak have completed the acquisition of a 65 percent interest in JET Tankstellen Deutschland GmbH, a subsidiary of Houston oil and gas giant Phillips 66.

JET is one of the largest and most popular fuel retailers in Germany and Austria with a rapidly growing EV charging network, according to a news release. It also operates approximately 970 service stations, convenience stores and car washes.

“We are delighted to complete this acquisition and to partner with Stonepeak and Phillips 66 to take JET to the next level,” Javed Ahmed, managing partner of Energy Equation Partners, said in a news release. “This investment reflects EEP’s commitment to investing in established players in the energy sector who have the potential to make a meaningful impact on the energy transition, and we are excited to work alongside the entire JET team, including its dedicated service station operators, to realize this vision.”

The deal values JET at approximately $2.8 billion. Phillips 66 will retain a 35 percent non-operated interest in JET and received about $1.6 billion in pre-tax proceeds.

“Under Phillips 66’s ownership, JET has grown into one of the largest fuel retailers in Germany and Austria," Anthony Borreca, senior managing director and co-head of energy at Stonepeak, added in a news release. "We are excited to join forces with them, as well as Javed and the EEP team, who have long-standing experience investing in and operating retail fuel distribution and logistics globally, to support the next phase of JET’s growth.”

6 must-attend Houston energy events in December 2025

Event Guide

Editor's note: The year is coming to a close, but there are still exciting energy events to attend in Houston this month. Mark your calendar now for pitch days, seminars, networking, and Reuters Energy LIVE 2025.

Dec. 4 — Resiliency & Adaptation Sector Pitch Day

Join innovators, industry leaders, investors, and policymakers as they explore breakthrough climate and energy technologies at Greentown Labs' latest installment of its Sector Pitch Day series, focused on resiliency and adaptation. Hear from Adrian Trömel, Chief Innovation Officer at Rice University; Eric Willman, Executive Director of the Rice WaTER Institute; pitches from 10 Greentown startups; and more.

This event is Thursday, Dec. 4, from 1-3:30 p.m. at the Ion. The Ion Holiday Block Party follows. Register here.

Dec. 8 — Pumps & Pipes Annual Event 2025

The annual gathering brings together cross-industry leaders in aerospace, energy and medicine for engaging discussions and networking opportunities. Connor Grennan, Chief AI Architect at the NYU Stern School of Business, will present this year's keynote address, "Practical Strategies to Increase Productivity." Other sessions will feature leaders from Cena Research Institute, NASA Ames Research Center, ExxonMobil, Southwest Airlines, and more.

This event is Monday, Dec. 8, from 8 a.m.-5 p.m., at TMC Helix Park. Register here.

Dec. 9 — Energy in Action Seminar

The Energy Transition Institute hosts a monthly Energy in Action Seminar focused on the digitization of the global energy transition. This month's topic is "Exploring AI’s Impact on the Fuels & Petrochemicals Industry," featuring speaker Leo Chiang, Senior Director of Corporate Technology at The Lubrizol Corporation. The event includes a one-hour talk followed by an hour of networking.

This event is Dec. 9 from 4-6 pm at the University of Houston.

Dec. 9-10 — Energy LIVE 2025

Energy LIVE is Reuters Events' flagship conference and expo that brings the full energy ecosystem together under one roof in Houston to solve the industry's most urgent commercial and operational challenges. The event will feature 3,000-plus senior executives across three strategic stages, a showcase of 75-plus exhibitors, and six strategic content pillars.

This event is Dec. 9-10 at NRG Park. Register here.

Dec. 11-12 — Fundamentals of The Texas ERCOT Electric Power Market

This two-day seminar provides a comprehensive overview of the structure, function, and current status of the Texas ERCOT ISO. Attendees will gain an understanding of the dynamic Texas wholesale and retail competitive markets, and learn how these markets interface with ERCOT ISO energy auctions and ISO operations. This two-day event will also address the rapidly expanding new market opportunities in Texas renewables, distributed generation, demand response, and demand side management, and more.

This event is Dec. 11-12 at the Courtyard Marriott Houston near the Galleria. Register here.

Dec. 9-11 — AST Conference & Trade Show

The 18th Annual National Aboveground Storage Tank (AST) Conference & Trade Show is the premier event for professionals in storage tank and terminal operations. Join industry leaders and experts for a three-day conference providing regulatory updates, technical insights, hands-on learning, and networking opportunities.

This event is Dec. 9-12 at The Woodlands Waterway Marriott. Register here.

Houston scientists develop 'recharge-to-recycle' reactor for lithium-ion batteries

reduce, recharge, recycle

Engineers at Rice University have developed a cleaner, innovative process to turn end-of-life lithium-ion battery waste into new lithium feedstock.

The findings, recently published in the journal Joule, demonstrate how the team’s new “recharge-to-recycle” reactor recharges the battery’s waste cathode materials to coax out lithium ions into water. The team was then able to form high-purity lithium hydroxide, which was clean enough to feed directly back into battery manufacturing.

The study has major implications for the electric vehicle sector, which significantly contributes to the waste stream from end-of-life battery packs. Additionally, lithium tends to be expensive to mine and refine, and current recycling methods are energy- and chemical-intensive.

“Directly producing high-purity lithium hydroxide shortens the path back into new batteries,” Haotian Wang, associate professor of chemical and biomolecular engineering, co-corresponding author of the study and co-founder of Solidec, said in a news release. “That means fewer processing steps, lower waste and a more resilient supply chain.”

Sibani Lisa Biswal, chair of Rice’s Department of Chemical and Biomolecular Engineering and the William M. McCardell Professor in Chemical Engineering, also served as co-corresponding author on the study.

“We asked a basic question: If charging a battery pulls lithium out of a cathode, why not use that same reaction to recycle?” Biswal added in the release. “By pairing that chemistry with a compact electrochemical reactor, we can separate lithium cleanly and produce the exact salt manufacturers want.”

The new process also showed scalability, according to Rice. The engineers scaled the device to 20 square centimeters, then ran a 1,000-hour stability test and processed 57 grams of industrial black mass supplied by industry partner Houston-based TotalEnergies. The results produced lithium hydroxide that was more than 99 percent pure. It also maintained an average lithium recovery rate of nearly 90 percent over the 1,000-hour test, showing its durability. The process also worked across multiple battery chemistries, including lithium iron phosphate, lithium manganese oxide and nickel-manganese-cobalt variants.

Looking ahead, the team plans to scale the process and consider ways it can sustain high efficiency for greater lithium hydroxide concentrations.

“We’ve made lithium extraction cleaner and simpler,” Biswal added in the release. “Now we see the next bottleneck clearly. Tackle concentration, and you unlock even better sustainability.