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Courtesy of RMI.
By Laurie Stone

Mike Roeth has clocked thousands of miles pulling his solar-powered recreational vehicle around the country in his quest to make trucking cleaner and more efficient. For some it may seem strange that an effort to curb fuel takes fuel, since Roeth pulls his RV with a diesel-powered Ford F-250.

But for Roeth, executive director of the North American Council for Freight Efficiency (NACFE) and trucking lead for RMI, it makes total sense. Roeth likes to live by the concept of “gemba,” a Japanese word meaning “the actual place.” He learned it in the 1990s while he was managing a plant for a manufacturer of engines and power systems. His plant was implementing a production system similar to Toyota’s, and Roeth was studying the Japanese automaker’s efforts when he discovered gemba.

Gemba means going to see the actual process and learning from those who do the work. Inside a Toyota factory, it means that management walks the floor to observe the manufacturing process up close. In Roeth’s world, it means that he is constantly out on the road, meeting with trucking companies and chatting with truck drivers. His goal is to understand the latest technologies for reducing emissions in a sector that is responsible for 24 percent of transportation’s greenhouse gas footprint.

Roeth grew up on a farm near Dayton, Ohio. He has been around tractors and trucks since he was a toddler. After graduating from Ohio State University with an engineering degree and working with different companies, he eventually became a vice president at Navistar, the company that owns the International brand of trucks and diesel engines. Roeth traveled a lot for work, and when he left Navistar, he decided he wanted to spend more time with his wife, Letty. He told her he would look for a job in Fort Wayne, Indiana, where they were living at the time.

Letty, however, knew her husband better than that. “That’s not you—you have to be traveling and out with people,” she told him. “Why don’t we buy a camper? I’ll go with you and see how we like it.” Roeth became an industry consultant, and they instantly fell in love with working on the road.

Getting the Efficiency Bug

Although Roeth loves working in the trucking industry, he was bothered by the lack of interest in efficiency technologies when fuel prices were low. “I was frustrated to find out that over the past 50 years, when fuel prices went up the industry wanted to lower costs and be more efficient, but when prices went down they didn’t,” he said. As a result, a lot of efficiency technologies were being discarded. “I knew that we need to and can do better with the emissions that move our goods.”

Around the same time that the Roeths were taking to the road, RMI hosted a workshop on efficient trucking with the goal of doubling the efficiency of the trucking sector. NACFE, an independent organization helping to drive efficiency in the trucking sector, was born out of that charrette, and Roeth was the perfect person to take it on.

“The thing I like about trucking is that it’s a small industry: only about half a million trucks are produced in a given year. It forces everyone to work together,” Roeth says. “Even though all the companies have divergent goals, and there’s a very diverse, complex market of trucking, it’s also incredibly collaborative.” That dynamic is ideal for Roeth, who excels at getting people together to work toward a common goal.

“Mike has an incredible resume of experience,” says Amanda Phillips, general manager of OEM (original equipment manufacturer) sales at Meritor, a corporation that makes truck components. “He is always willing to share ideas and teach others. His energy and positive attitude are contagious.” From 2010 to 2016, Roeth nurtured NACFE from a small startup nonprofit to the leading organization on trucking efficiency. According to Phillips, “Mike’s entrepreneurial spirit and his work with NACFE have helped fleets better understand available technologies and the impact those advances can make in their fleet’s carbon footprint.”

During that same time, the Roeths got progressively bigger campers and started being gone more often. They eventually sold their house, got rid of most of their stuff, and became full-time RVers. They now have a 41-foot Jayco Eagle outfitted with a 1.4 kilowatt solar array to run their appliances.

The Roeths’ next step is to replace both their truck and camper with a motor home that pulls an electric car. Then, when parked at a campsite, they can drive their electric car for shorter trips. They hope to eventually get away from fossil fuels completely with an electric or hydrogen-powered truck that can pull an RV.

The Birth of Run on Less

In 2016, the NACFE team was trying to figure out how efficient a tractor trailer could be if it incorporated the best available efficiency technologies. The team thought the best way to do that was to track some of the most fuel-efficient trucks, driven by efficiency-focused drivers. And with that, Run on Less was born.

The first Run on Less event featured seven fleets, outfitted with different fuel-efficiency measures, in a cross-country demonstration. NACFE followed the fleets across the country and proved that fleets can improve their fuel efficiency by 25 percent if they adopt the right technologies.

The event was so successful that NACFE held a second Run on Less event in 2019. This one included 10 fleets, many very large, focused on regional haul. The second demonstration proved that the 800,000 trucks in North America could decrease their annual consumption of diesel from 8 billion gallons to 5.5 billion gallons, and eventually down to 1 billion gallons.

“Run on Less is just a gift that keeps on giving,” says Roeth. “It’s real, it’s human. We talk to truckers and the people buying trucks and running them, and then we share their stories and data. Do we like it because it’s fun or because the marketplace likes it? I think it’s a bit of both.”

To Roeth, the future of trucking looks bright. He’s most excited about electric and hydrogen trucks. “To think we can move freight with no emissions is incredible,” he says. “Trucking has done a lot. Diesel exhaust is cleaner now. I’m really proud of the industry. But it’s still carbon-based. I’m most excited about moving the industry to zero carbon.”

Roeth is getting an up-close glimpse at a carbon-free future for trucking in the third Run on Less demonstration, called Run on Less–Electric. This event, beginning September 2, features 13 electric trucks in a variety of real-world applications for companies including Frito-Lay, Anheuser-Busch, and Penske.

In addition to new technologies, Roeth is also excited about the changes in terms of diversity that he has seen over the 35 years he’s been involved in the industry. “The meetings I was in 30 years ago were all mostly white men. Now we have women and people of color involved from management to drivers,” he explains.

Living the Gemba Way

While many people took to the road during the COVID pandemic, the Roeths actually stayed put. Part of the joy of being on the road for the Roeths is not only attending industry events, but also going to museums, sporting events, and pubs, and meeting interesting people across the country.

Mike Roeth: Decarbonizing Trucking from the RoadWith COVID putting a stop to most of that, they felt they had no reason to go anywhere, so they hunkered down in Indiana. But it wasn’t the same. “During the pandemic I felt I was getting out of touch with trucking,” says Roeth. So he is now back on the road meeting with trucking companies, manufacturers, and drivers.

In the weeks leading up to Run on Less–Electric, he has been traveling around the country visiting most of the 13 companies involved, from Los Angeles to New York City. He has conducted dozens of interviews of fleet managers, company leaders, and truck drivers.

In this way, he learns firsthand about the benefits of electric trucks as well as any challenges the companies have faced. He then uses this knowledge to help increase the use of electric trucks in the industry. After one and a half years of COVID, he is back in his element: observing, listening, learning, and sharing ideas face-to-face. And that’s at the heart of how Roeth tries to live—the gemba way.

Learn about the companies and trucks involved in Run on Less – Electric and follow the Run at https://runonless.com.

 

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Mining execs embrace ‘phenomenal’ rare earths interest from the Middle East

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Mining execs embrace 'phenomenal' rare earths interest from the Middle East

Guests enjoy the Fortune Global Forum 2025 Gala Dinner on October 26, 2025 at Diriyah Gate, Riyadh, Saudi Arabia.

Cedric Ribeiro | Getty Images Entertainment | Getty Images

Mining executives have welcomed a sharp upswing in investor interest from the Middle East, as Gulf states seek to expand their critical mineral ambitions and take on established global players.

Critical minerals refer to a subset of materials considered essential to the energy transition. These resources, which tend to have a high risk of supply chain disruption, include metals such as copper, lithium, nickel, cobalt and rare earth elements.

“The interest in rare earths in this part of the world is phenomenal,” Tony Sage, CEO of U.S.-listed rare earths miner Critical Metals, said during a business trip through the Middle East.

“I didn’t expect it because, you know, they can’t mine it. There [are] really no discoveries in this area, but they want to be able to participate somehow in the downstream,” Sage told CNBC by telephone.

His comments come as policymakers and business leaders flock to Saudi Arabia’s Future Investment Initiative (FII) in Riyadh, an event nicknamed as the “Davos in the Desert.”

The annual event, which got underway on Monday, is being held under the theme: “The Key to Prosperity: Unlocking New Frontiers of Growth.” It is expected this year’s FII will lean into areas such as artificial intelligence, particularly as the oil-rich kingdom continues with its mission to diversify its economy.

A wheel loader takes ore to a crusher at the MP Materials rare earth mine in Mountain Pass, California, U.S. January 30, 2020.

Steve Marcus | Reuters

Analysts say Gulf states, led by the likes of Saudi Arabia and the UAE, are increasingly seeking to leverage their financial capital and geographic location to capture critical minerals market share.

A series of targeted acquisitions and international partnerships forms a key part of this regional strategy, according to an analysis by the International Institute for Strategic Studies (IISS), with Gulf states seeking to present themselves as alternative partners to Western nations.

Critical Metals, for its part, has partnered with Saudi Arabia’s Obeikan Group to build a large-scale lithium hydroxide processing plant in the kingdom.

A strategic push

Kevin Das, senior technical consultant at New Frontier Minerals, an Australian-based rare earths explorer, linked investor interest in rare earths from the Middle East to exponential growth in the field of AI.

“It’s no surprise that you’re seeing interest, not just in the Western world, but spreading into the Gulf States because I think people are realizing that we’re probably on the cusp of an AI boom,” Das told CNBC by telephone.

“If you start to see the emergence of robotics, every robot is going to need these rare earths. And I think the supply is only going to get tighter,” he added.

Rare earth elements have emerged as a key bargaining chip in the ongoing U.S.-China trade war, although global stocks rallied on Monday amid investor hopes of thawing tensions between the world’s two largest economies.

U.S. officials have touted the prospect of China delaying strict rare earth export controls as part of a high-stakes summit between President Donald Trump and China’s Xi Jinping on Thursday.

Rare earths refer to 17 elements on the periodic table whose atomic structure gives them special magnetic properties. These elements are widely used in the automotive, robotics and defense sectors.

U.S. President Donald Trump meets with Saudi Crown Prince Mohammed bin Salman during a “coffee ceremony” at the Saudi Royal Court on May 13, 2025, in Riyadh, Saudi Arabia.

Win Mcnamee | Getty Images News | Getty Images

Shaun Bunn, managing director at London-listed Empire Metals, said his company had also received considerable investor interest from the Middle East.

“I think that it is very much part of the kingdom’s strategic push to diversify away from its oil. I mean, they are always going to make the most money out of oil at the moment at least, but they are trying to diversify,” Bunn told CNBC by telephone.

Critical mineral ambitions

Analysts have flagged a number of barriers facing the Gulf states’ push for critical minerals, however, noting that regional players remain marginal producers at present.

“Many of Saudi Arabia’s mining ventures remain in early or even conceptual stages, and the country still depends on foreign partners for expertise, such that it may take years for Saudi Arabia, and the Gulf states more generally, to scale up enough to dent Chinese dominance or to fully meet Western demand,” Asna Wajid, research analyst at IISS, said in an analysis published in late July.

“Many in the West, moreover, may be wary of replacing their dependence on China with dependence on the Gulf states, which already exercise considerable strategic leverage due to their oil and gas supplies,” Wajid said.

China is the undisputed leader of the critical minerals supply chain, producing roughly 70% of the world’s supply of rare earths and processing almost 90%, which means it is importing these materials from other countries and processing them.

U.S. officials have previously warned that this dominance poses a strategic challenge amid the pivot to more sustainable energy sources.

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Google and NextEra to revive major Iowa nuclear facility as AI energy demand surges

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Google and NextEra to revive major Iowa nuclear facility as AI energy demand surges

Stock photo of a nuclear power plant.

Larry Lee Photography | Corbis | Getty Images

Google and American electrical utility giant NextEra Energy announced a partnership Monday to revive Iowa’s only nuclear power plant to meet growing low-carbon energy demand from artificial intelligence

The Duane Arnold Energy Center, which closed in 2020, could begin operating in early 2029, pending regulatory approval.

“Once operational, Google will purchase power from the 615-MW plant as a 24/7 carbon-free energy source to help power Google’s growing cloud and AI infrastructure in Iowa, while also strengthening local grid reliability,” the companies said in a press release.  

The Central Iowa Power Cooperative, the state’s largest energy provider, has agreed to buy surplus electricity leftover by Google.

The Duane Arnold Energy Center’s prior shutdown had come at a time when the nuclear sector was struggling to compete with natural gas and other renewable energy sources due to high operating costs and public perception challenges around safety.

However, the nuclear site’s revival marks a trend, as energy demand in the U.S. has been surging, with tech companies like Google investing billions in developing power-hungry AI data centers. 

According to the U.S. Energy Information Administration, total annual electricity consumption stateside hit a record high in 2024 — a ceiling that could continue to rise if data centers continue to expand at their current pace.

I continue to like uranium, says 'Fast Money' trader Tim Seymour

In the face of rising energy demands, Washington and the tech industry have been pushing nuclear energy as a potential way to address growing concerns about AI computing’s impacts on local energy grids.  

The Iowa project follows similar nuclear partnerships, including one between Constellation Energy and Microsoft. Meanwhile, computer giant Oracle recently said it is designing a data center powered by three small nuclear reactors.

In addition to bringing more energy online, nuclear energy provides a potential pathway for Big Tech to continue their data center rollout while also curbing carbon emissions. 

“[The Google-NextEra partnership] serves as a model for the investments needed across the country to build energy capacity and deliver reliable, clean power, while protecting affordability and creating jobs that will drive the AI-driven economy,” Ruth Porat, president and chief investment officer of Alphabet and Google, said.

Media outlets had taken note when Google, in June, had quietly removed its commitment to achieving net-zero carbon emissions by 2030 from the main page of its corporate sustainability website amid expansion of its AI plans. 

Data center projects across the U.S. have also faced growing public pushback. In September, Google withdrew plans for a new data center in Indiana after community groups raised concerns about resource use and environmental impacts, local media reported

On the other hand, Iowa has so far proved receptive to such projects, with Google having invested more than $6.8 billion into data centers in the state. Iowa lawmakers have praised the latest project in the joint release, saying it will support local jobs and energy grids.

“Bringing Duane Arnold back online is a big win for Linn County and the entire state of Iowa,” State Senator Charlie McClintock said, adding that the announcement shows Iowa can “keep the lights” on for residents and businesses.

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How Saudi Arabia is diversifying away from oil — and betting big on AI

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How Saudi Arabia is diversifying away from oil — and betting big on AI

President and CEO of Saudi’s Aramco, Amin H. Nasser, speaks during the Future Investment Initiative (FII) in Riyadh, Saudi Arabia October 29, 2024.

Hamad I Mohammed | Reuters

Think of Saudi Arabia and the first thing that comes to mind might be its massive, oil-derived wealth.

While oil continues to drive Saudi Arabia’s economy, the kingdom is now expanding into areas such as artificial intelligence, tourism and sports to diversify its growth avenues.

According to Saudi Arabia’s Minister for Investment Khalid Al Falih, more than half — 50.6% — of the Saudi economy is now “completely decoupled” from oil.

“This percentage is growing,” Al Failh told CNBC’s Dan Murphy, adding that government revenue used to be almost completely derived from oil money, but now, 40% of its revenue comes from sectors and sources that “have nothing to do with oil.”

“We’re seeing great results, but we’re not satisfied. We want to do more. We want to accelerate the kingdom’s diversification and growth story,” he said.

Saudi Arabia is doubling down on fast-growing sectors such as artificial intelligence, naming it one of its new growth areas, with Al Failh saying the kingdom will be a “key investor” in developing AI applications and large language models. Saudi Arabia would also build data centers “at a scale and at a competitive cost not achieved anywhere else.”

“AI has emerged [in] the last three, four years, and it’s definitely going to define how the future economy of every nation. Those who invest will lead, and those who lag behind, unfortunately, will lose,” he pointed out.

On Monday, AI chip company Groq’s CEO, Jonathan Ross, told CNBC that  for AI infrastructure thanks to its energy surplus. The country could see more than $135 billion in gains by 2030 thanks to AI, according to PwC.

Saudi Arabia’s quarterly budget performance report revealed that total government revenue for the first half of 2025 came in at 565.21 billion Saudi riyals ($150.73 billion), with oil making up 53.4% of the country’s overall revenue, down from 67.97% in the same period in 2019.

In 2024, the country reported a 1.3% rise in full-year GDP, mainly driven by a 4.3% increase in non-oil segments. Oil activity, on the other hand, fell 4.5% year on year.

The country’s sovereign wealth fund — the Public Investment Fund — has acquired stakes in tech giants, video game publishers and football clubs as it uses oil revenues to diversify into other sectors.

PIF has acquired stakes in video-game heavyweight Electronic Arts, establishing the SoftBank Vision Fund with Masayoshi Son’s SoftBank Group Corp in 2017, and a takeover of English Premier League club Newcastle United in 2021.

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When asked if declining oil prices were piling pressure on Saudi Arabia’s economy and government revenue, Al Falih said that the country was not scaling back budgets and there were no cuts to public spending.

Oil prices have fallen in 2025, with Brent crude spot prices down 13.4% so far this year, according to FactSet. Saudi Arabia’s oil revenue slid 24% in the first half of 2025 from a year earlier.

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The government will continue to address all activities that require government spending, Al Falih said, noting that the PIF has grown sixfold since its creation and that the country was approaching nearly $1 trillion in capital deployed across sectors of strategic interest.

Tourism has also been a key growth area for Saudi Arabia. Ahmed Al-Khateeb, the country’s tourism minister, told CNBC that the sector’s share in GDP had grown to 5% in 2024 from 3% in 2019.

“We are [opening] resorts, new airlines, new airports, and the numbers are growing, and we are focusing on countries and visitors that are coming from outside to experience our great culture,” Al-Khateeb highlighted.

The tourism minister also expressed confidence that the sector could contribute 10% of GDP by 2030, aiming to raise it to 20% eventually.

“This 20% will help Saudi Arabia to diversify the economy and make it more sustainable,” he added.

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