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Ask any climate wonk what’s holding back clean energy in the U.S. and you’re likely to get the same answer — not enough power lines. But what if the problem isn’t the number of power lines, but rather the outdated metal wires they’re made of?
Restringing transmission lines with more advanced wires, a process known as “reconductoring,” has the potential to double the amount of electricity our existing transmission system can handle, for less than half the price of building new lines. That’s the main finding of a recently published working paper from researchers at the University of California, Berkeley, and Gridlab, an energy consulting firm.
There are a few reasons that something as boring and seemingly ubiquitous as power lines are so crucial to the energy transition. Electrifying our cars and homes will increase demand for electricity, and much of the system is already too congested to integrate new wind and solar power plants. Plus, there just aren’t enough lines that run from the sunniest, windiest places to the places where most people actually live.
To realize the emission reduction potential of the clean energy subsidies in the Inflation Reduction Act, we have to more than double the rate of transmission expansion, according to research from Princeton University’s Repeat Project. Clean energy projects already face major delays and are often hit with exorbitant bills to connect to the grid. A study from Lawrence Berkeley National Laboratory called “Queued Up” found that at the end of 2022, there were more than 10,000 power plant and energy storage projects waiting for permission to connect to the grid — enough to double electricity production in the country. Some 95% of them were zero-carbon resources.
The main problem is permitting. Establishing rights-of-way for new power lines requires extensive environmental review and invites vicious local opposition. People don’t want to look at more wires strung across the landscape. They worry the eyesore will decrease their property value, or that the construction will hurt local ecosystems. New power lines often take upwards of 10 years to plan, permit, and build.
But it’s possible to avoid this time-consuming process, at least in many cases, by simply reconductoring lines along existing rights-of-way. Most of our existing power lines have a steel core surrounded by strands of aluminum. Advanced conductors replace the steel with a lighter but stronger core made of a composite material, such as carbon fiber. This subtle shift in materials and design enables the line to operate at higher temperatures, with less sag, significantly increasing the amount of power it can carry.
Advanced conductors cost two to four times more than conventional power lines — but upgrading an existing line to use advanced conductors can be less than half what a new power line would cost because it eliminates much of the construction spending and fees from permitting for new rights-of-way, the Berkeley study found.
“The most compelling, exciting thing is that it only requires a maintenance permit,” Duncan Callaway, an associate professor of energy and resources at Berkeley and one of the authors said while presenting the research over Zoom last week.
The paper highlights a 2016 project in southeastern Texas. Due to rapid population growth in the area, the local utility, American Electric Power, was seeing higher demand for electricity at peak times than it was prepared for, leading to blackouts. It needed to come up with a solution, fast, and decided that reconductoring 240 miles of its transmission lines would take less time than permitting new ones. The project ended up finishing ahead of schedule and under budget, at a cost of $900,000 per mile. By comparison, the 3,600 miles of new lines built under Texas’ Competitive Renewable Energy Zone program, which were built to connect wind-rich areas to population centers, cost more than double, at an average of $1.9 million per mile.
Callaway and his co-authors also plugged their findings into a power system expansion model — basically a computer program that maps out the most cost-effective mix of technologies to meet regional electric power demand. They fed the model a scenario where the only option for transmission was to build new lines at their slow, historical rate, as well as a scenario where there was also an option to reconductor along existing rights-of-way. The second scenario resulted in nearly four times as much transmission capacity by 2035, enabling the country to achieve a more than 90% clean electric grid by that date.
There are cases where new power lines are needed — for example, to establish a new route to access a high-quality renewable resource, Emilia Chojkiewicz, another author of the study, told me in an email. But she said it nearly always makes sense to consider reconductoring given the potential to double capacity and do so much more quickly. “Unfortunately,” she added, “current transmission planning practices do not tend to incentivize or even consider reconductoring.”
This all seems so ridiculously easy that it begs the question: Why aren’t utilities already rushing to do it? During the webinar last week, Chojkiewicz and her co-authors said part of the problem is just a lack of awareness and comfort with the technology. But the bigger issue is that utilities are not incentivized to look for cheaper, more efficient solutions like reconductoring because they profit off capital spending.
To change this, they suggested that the Federal Energy Regulatory Commission, which oversees interstate transmission, and state public service commissions, which regulate utilities at the state level, mandate the consideration of reconductoring in transmission and resource planning processes, and to properly value the benefits that advanced conductors provide. The Department of Energy could also consider instituting a national conductor efficiency standard, so that all new wires installed, whether along existing rights-of-way or new routes, achieve a minimum level of performance.
Reconductoring isn’t the only no-brainer alternative to building new power lines. Another study from the clean energy think tank RMI published last week illustrates the opportunity with even cheaper tweaks called “grid enhancing technologies.” One option is to install sensors that collect data on wind speed, temperature, and other factors that affect power lines in real time, called dynamic line ratings. These sensors allow utilities to safely increase the amount of power transmitted when weather conditions permit it. There are also power flow controls that can redirect power away from congested lines so that it can be transmitted elsewhere rather than wasted.
RMI found that in the PJM interconnection — a section of the grid in the eastern U.S. that is so congested the grid operator has frozen new applications to connect to it — these grid enhancing technologies could open up more than 6 gigawatts of new capacity to wind, solar, and storage projects in just three years. For reference, in 2022, nearly 300 gigawatts-worth of energy projects were waiting for permission to connect in PJM at the end 2022.
The cost savings are not just theoretical. In 2018, the PJM grid operator determined that a wind farm expansion in Illinois was going to require $100 million of grid upgrades — including building new lines and reconductoring existing ones — over a timeline of about three years before it would be able to connect. The developer countered that the needed upgrades could be achieved through power flow controls, which could be installed for a cost of just $12 million in less than half the time. PJM approved the idea, and the project is currently underway.
Congress is still debating how to reform permitting processes. But while that’s still a necessary step, it’s becoming increasingly clear that there’s a host of other outside-the-box solutions that can be deployed more quickly, in the near term. The IRA may have convinced the environmental movement that building new stuff was worth it, but there are still a lot of cases where the smarter choice is to renovate.
Editor’s note: This story has been updated to correct the cost of adding power flow controls to the PJM interconnection.
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In a press conference about the newly recast program’s first loan guarantee, Energy Secretary Chris Wright teased his project finance philosophy.
Energy Secretary Chris Wright on Thursday announced a $1.6 billion loan guarantee for American Electric Power to replace 5,000 miles of transmission lines with more advanced wires that can carry more electricity. He also hinted at his vision for how the Trump administration could recast the role of the department's Loan Programs Office in the years to come.
The LPO actually announced that it had finalized an agreement, conditionally made in January under the Biden administration, to back AEP’s plan. The loan guarantee will enable AEP to secure lower-cost financing for the project, for an eventual estimated saving to energy consumers of $275 million over the lifetime of the loan.
“These are the kind of projects where we’re going to partner with businesses to make our energy system more efficient, more reliable, ultimately lower cost,” Wright said on a call with reporters.
And yet in the past few months, the department has also canceled loan guarantees and grants for other transmission projects that were expected to provide those same benefits — including the Grain Belt Express, an 800-mile line set to bring low-cost wind power from Kansas to the Chicago metropolitan area in Illinois.
“We don’t care about authorship,” Wright told reporters, acknowledging that the AEP loan was conditionally approved by the Biden administration. “Not all of them were nonsense. The ones that are in the interest of the American taxpayers, in the interest of the American ratepayers, and there’s a helpful role for government capital — we’re happy to support those.”
When asked specifically why AEP’s proposal met his criteria while the Grain Belt Express didn’t, Wright first made an argument about cost. “I have nothing against the Grain Belt Express,” he said. “I suspect it’ll still be developed. But it’s far more expensive on a per mile basis since it’s a brand new transmission line.”
His subsequent comments, however, hinted at a more significant shift in approach. He went on to argue that the project came with an unacceptable amount of risk since the developers didn’t have buyers yet for the power coming down the line. It was trying to “close on arbitrage,” he said, by buying up cheap wind power that was stranded in Kansas and bringing it to a larger market. “It’s a more commercial enterprise,” he said. “That’s done with private entrepreneurs and private capital.”
It’s important to note that the Grain Belt Express loan guarantee would have been issued under an innovation-focused program within the Loan Programs Office that was specifically geared toward higher risk projects that banks won’t otherwise touch. The AEP project is part of a different program focused on more mature technologies, with a goal of reducing the cost of major utility infrastructure upgrades to ratepayers.
When I floated Wright’s comments by Jigar Shah, the former head of the Loan Programs Office under the Biden administration, he was flummoxed. “It’s nonsensical,” he said. To Shah, taking Wright’s risk aversion to its logical conclusion would mean, for instance, that the office should not fund any nuclear energy projects. “If this becomes a new standard, that means nuclear is dead in the United States,” he said.
AEP is the first developer to secure a loan guarantee under the Energy Dominance Financing Program, Congress’ new name a Biden-era program within LPO that offered loan guarantees to utilities to “retool, repower, repurpose, or replace energy infrastructure.” Initially called the Energy Infrastructure Reinvestment Financing Program and created by the Inflation Reduction Act, it focused on projects with climate benefits, like making efficiency upgrades to power plants or installing renewables on the site of a former coal plant.
In the Biden administration’s view, AEP’s project would “contribute to emissions reductions by supporting existing and new clean generation by expanding transmission capacity in the regions in which they operate.”
Trump’s One Big Beautiful Bill Act rebranded the program and removed any requirements that projects reduce emissions. On Thursday’s call, Wright seemed to imply that it wasn’t just the Biden-era loan program that had been renamed. “The Loan Program Office is being rechristened the Energy Dominant Financing — it is the rechristening of the same department,” he said in response to a question about the office’s remaining loan authority. The Department of Energy did not respond to my request for clarification.
None of that means that the potential emissions benefits from AEP’s project won’t materialize. Limited transmission capacity is one of the biggest obstacles for bringing new wind and solar power online, and reconductoring could also reduce line losses, making the overall grid more efficient.
The transmission project — which includes plans to rebuild some power lines and reconductor others — will ultimately increase capacity by more than 100%, a spokesperson for AEP told me. The first phase will involve upgrades to about 100 miles of wires across Ohio and Oklahoma, while future phases will tackle lines in Indiana, Michigan, and West Virginia, with the intent of meeting growing demand from data centers and manufacturing development, according to a press release.
When reporters asked Wright about the other conditional loan guarantees the Biden administration had issued under the Energy Infrastructure Reinvestment program that are still pending, the secretary stressed that he was looking for applicants that had identified a clear set of projects they would implement. “Many were done in a hurry, without really even having the projects that the loans would be associated with identified. You can end up with a grab bag of projects without a lot of say for where the money went,” he said.
Wright accused the Biden administration of failing to ask applicants to detail the impact the projects would have on taxpayers and ratepayers — a key question his colleagues are now asking.
Shah disagreed with that portrayal. The whole point of the program was to reduce interest rates for utilities and require them to pass on the benefit to ratepayers. All of the projects awarded conditional commitments met that bar, he said.
He warned that if the Trump administration didn’t honor the remaining conditional commitments to utilities under the program — all 10 of them — it risked losing the trust of any new companies it attempts to make similar deals with.
“Most of the nuclear projects that they’re looking to chase are not going to get closed until 2028. And so what signal are they sending? That projects that get approved in the last year of an administration are not going to be honored in the next administration?”
On a new loan guarantee, a Nord Stream 2 revival, and AI-aided oil recovery
Current conditions: As Tropical Storm Lorenzo looks likely to dissipate over water by Friday, AccuWeather has slashed the season’s forecast to six hurricanes from nine • Severe thunderstorms near Little Rock, Arkansas, and Memphis, Tennessee, are likely too spotty to relieve long-standing drought in the Mississippi River Basin • The Netrokona district of northeastern Bangladesh is scorching in temperatures nearing 100 degrees Fahrenheit.
A rendering of the future Cascade Advanced Energy Facility. Amazon
A year after Amazon invested in the small modular reactor developer X-energy, the tech giant has unveiled its plans to build a nearly gigawatt-sized plant in southeastern Washington, where it will install the nuclear company’s next-generation technology for the first time. The Cascade Advanced Energy Facility is set to begin construction “by the end of this decade,” with hopes of generating power from up to a dozen of X-energy’s 80-megawatt high-temperature gas-cooled reactors sometime “in the 2030s.” Amazon plans to build the plant in three phases, with four reactors at each stage, eventually reaching 960 megawatts in capacity. Located in Richland, Washington, along the Columbia River, the facility will nearly double the output of the Pacific Northwest’s only nuclear plant, the nearby Energy Northwest’s Columbia Generating Station.
In a sign of what Heatmap’s Katie Brigham called “the nuclear dealmaking boom” back in August, rival microreactor developer Oklo suggested at a recent public meeting in Tennessee that it may propose building some of its reactors near the Oak Ridge site of its debut nuclear waste recycling project, the Knoxville News Sentinel reported Monday. On Tuesday, meanwhile, the U.S. Army announced its new Janus program, which aims to supply bases by 2028 with microreactors like the ones Oklo aims to build, which generate 20 megawatts of electricity or less. The reactors would be owned and operated by private companies. “What resilience means to us is that we have power, no matter what, 24-7,” Jeff Waksman, principal deputy assistant secretary of the Army, told The Wall Street Journal.
The Department of Energy’s Loan Programs Office has largely revoked deals made under the previous administration since President Donald Trump returned to office. But on Thursday morning, the agency’s in-house lender announced a $1.6 billion loan guarantee to a subsidiary of utility giant American Electric Power to upgrade and rebuild about 5,000 miles of transmission lines across Indiana, Michigan, Ohio, Oklahoma, and West Virginia. “This loan guarantee will not only help modernize the grid and expand transmission capacity but will help position the United States to win the AI race and grow our manufacturing base,” Secretary of Energy Chris Wright said in a press release.
The move came a day after a federal judge blocked the Trump administration’s effort to fire thousands of federal workers amid the ongoing government shutdown. At a hearing Wednesday, U.S. District Judge Susan Illston, a Clinton appointee based in California, granted labor unions’ request for a temporary restraining order to halt the dismissals. The hearing took place at the same time White House budget director Russ Vought appeared on the late conservative commentator Charlie Kirk’s podcast to preview his plans to lay off as many as 10,000 federal workers as the shutdown continued. The hearing will pause the job cuts for the roughly 4,000 workers who received notice so far. Illson said during the hearing that she granted the temporary restraining order because administration officials had “taken advantage of the lapse in government spending, government functioning, to assume that all bets are off, that the laws don’t apply to them anymore, and that they can impose the structures that they like on the government situation that they don’t like,” News From The States reported. “Things are being done before they’re thought through — very much ready, fire, aim.” Nearly 200 employees at the Department of Energy began receiving notices last week, as I wrote in yesterday’s newsletter.
The underwater explosion of the Nord Stream 2 pipeline connecting Germany to Russia’s gas supply remains one of the world’s biggest geopolitical whodunnits, and Berlin’s fellow European Union members seem keen to keep it that way. In just the past two days, Poland and Italy blocked extradition requests to send suspected saboteurs to Germany for trial. But the Germans aren’t just looking to figure out who’s responsible for destroying the megaproject. The Federal Ministry for Economic Affairs and Energy is considering restarting the certification process for the pipeline, the daily newspaper Der Tagesspiegel reported Wednesday. The previous German government had ruled out a restart of the pipeline in March after news broke that Russian President Vladimir Putin’s business allies were angling to restore the project. In June, the new government under conservative Chancellor Friedrich Merz began examining legal avenues to block any future plans to reactivate the pipeline, the Financial Times reported at the time. But under current law, the economic ministry said this week a restart “cannot be ruled out in the medium term.”
Ohio passed a new law to fast-track energy projects on former coal mines and brownfields, Canary Media reported Wednesday. Called House Bill 15, the legislation took effect in August and lets the state’s Department of Development designate the former industrial sites as “priority investment areas” at the request of local governments. Roughly a third of Ohio’s 88 counties ban wind, solar, or both, but the language in the bill makes clear that “it was meant to be technology-neutral,” Rebecca Mellino, a climate and energy policy associate at The Nature Conservancy, told Canary’s Kathiann M. Kowalski.
A transition from coal could yield significant health benefits, as The New York Times reported on Tuesday. A recent study found that, when a coal-processing facility near Pittsburgh shut down, the number of emergency room visits for respiratory issues in the surrounding area dropped by about 20% in the month following the closure.
The world’s annual consumption of oil isn’t expected to peak until the mid-2030s, and by 2050 it will reach a cumulative 1 trillion barrels, according to the consultancy Wood Mackenzie’s forecast. But production that’s either already onstream or ready for development is expected to gradually decline to 650 billion barrels per year by the mid century. What will make up the difference? “Traditional exploration will play its part but can’t get anywhere near bridging a gap of this scale,” Wood Mackenzie analysts wrote in a blog post on Wednesday. “Even the 21st century’s biggest new play, Guyana, with 15 billion barrels of oil, barely makes a dent.” To identify potential new resources, Wood Mackenzie rolled out a new AI-powered benchmark called Analogues, which “uses a machine learning method known as clustering to identify each field’s closest matches across 60 different attributes spanning rock properties, fluid characteristics, and commercial factors.” The AI tool could increase the share of recoverable conventional oil reserves by nearly 42%.
A chart showing how the AI "analogues" could bolster oil drilling. Wood Mackenzie
Fusion energy is rapidly accelerating in the U.S., and the Department of Energy is poised to release a national plan for speeding up the deployment of the technology. In the meantime, states can prepare by beefing up regulatory capacity, speeding up permitting, clearing interconnection queues, and creating special tax credits. That’s according to a new roadmap from the Clean Air Task Force. “As fusion energy moves closer to commercial reality, states have a window of opportunity to prepare,” Jack Moore, a fusion policy consultant at CATF, wrote in a blog post. “Proactive policy design today can help states position themselves to create an effective environment for fusion energy deployment tomorrow.”
Editor’s note: This story has been updated accurately reflect oil demand by 2050.
This thing is a certified clunker.
Americans certainly got the message about the end of the EV tax credit. With the $7,500 benefit set to disappear at the end of September, electric vehicle sales surged to record numbers in the third quarter of 2025 as buyers raced to beat the deadline.
The rising tide lifted just about all EVs — but not the struggling Tesla Cybertruck. According to new numbers from Kelley Blue Book, Tesla sold just 5,385 Cybertrucks from July to September, less than half as many as it delivered during the same period in 2024. The company is now expected to sell around 20,000 of the metal EVs this calendar year. That’s down from around 50,000 last year, and less than 10% of the 250,000 total Elon Musk once predicted as the truck’s annual sales figure.
Cybertruck was well on its way to flop status before these sales numbers. With its purposefully jarring aesthetic, the EV for edgelords was never going to be as popular as Musk proclaimed, and that was before his relationship to Donald Trump and online provocations pushed many more people away from the Tesla brand. Cost didn’t help, either. Tesla once said it would sell a $40,000 basic version of Cybertruck, a price point that might have enticed some buyers beyond the Musk fanboys who became early adopters, but the cheapest one you can actually buy today is around $60,000.
Still, the vehicle’s third-quarter performance is particularly damning in comparison to nationwide EV sales, where the tax credit’s demise ignited a fire sale. Americans bought more than 430,000 EVs during the quarter, an increase of about 40% from the second quarter of 2025 and about 30% from the third quarter of last year. Popular vehicles including the Chevy Equinox EV, Hyundai Ioniq 5, Ford Mustang Mach-E, and Honda Prologue surged to sales of more than 20,000 during the quarter. Electric trucks including the Rivian R1T, Ford F-150 Lightning, and GMC Hummer EV saw sales increases despite having high prices that rival the Cybertruck’s.
Tesla itself, despite months of bad press, did well, too. The brand’s share of the overall EV market continues to wane, reaching a new low of 41%. But the surge temporarily stabilized its tumbling sales, with plenty of people snatching up Model 3s and Model Ys while the getting was good. Those two vehicles remained the two best-selling EVs in America, with Tesla selling more than 114,000 Model Ys and more than 53,000 Model 3s.
Yet the good times did nothing to spur driver interest in Cybertruck. In fact, public enthusiasm for the vehicle might be even lower than it seems, because it turns out that one of the top customers for Musk’s electric tank is Musk himself. Electrek reports that his other companies, such as SpaceX and xAI, have been accumulating Cybertrucks as their company cars. Tesla is replacing some of its own fleet with Cybertrucks, as well.
The move makes sense for Musk. Because of weak overall demand, Cybertrucks are sitting idle on lots; selling them to his businesses at least puts them to work. The scheme also might improve the appearance of Tesla’s sales numbers, Electrek speculates. By locking in some of these sales with a downpayment before the end of September, Tesla can deliver Cybertrucks to Musk’s other business in the weeks to come and still get the tax credit on them. The approach could boost sales numbers for a fourth quarter that’s likely to be difficult with the disappearance of the federal incentive.
Now that Cybertruck has become Elon’s Edsel, Tesla’s hopes for an EV sales revival lie largely with the new “Standard” versions of its two best-sellers. These trim levels strip away some of the amenities from the Models 3 and Y to bring their starting prices down to $37,000 and $40,000, respectively. It’s far from clear that this will succeed. Anyone shopping for an EV solely on price could wait for the upcoming new versions of the Nissan Leaf and Chevy Bolt, which are expected to come in at $30,000 or less. The Equinox’s $35,000 starting price, five-grand less than even the budget Model Y crossover, has spurred its recent success.
Still, with 320-plus miles of estimated range and at least some of Tesla’s best features, the budget versions could be compelling cars at those prices. At the very least, they’ll speak to more drivers than the Cybertruck does.