You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
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 But what if the problem isn’t the number of power lines, but rather the outdated metal wires they’re made of?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.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
The administration can’t have it both ways on the Clean Air Act.
The Trump administration filed lawsuits this week against four states that are pursuing compensation from oil and gas companies for climate change-related damages. But Trump’s separate aim to revoke the government’s “endangerment finding,” the conclusion that greenhouse gases pose a threat to public health and should therefore be regulated under the Clean Air Act, could directly undercut the legal basis for the suits.
In each of the cases, the Trump administration is arguing that the Clean Air Act preempts the states’ actions. But if the Environmental Protection Agency rules that the Clean Air Act does not, in fact, require the federal regulation of greenhouse gases, that argument could fall apart.
Two of the lawsuits target Vermont and New York for their new “climate superfund” laws that require the companies responsible for the greatest amount of emissions over the last three decades to pay into a fund supporting adaptation and disaster response. The Department of Justice is also suing Hawaii and Michigan to block them from suing fossil fuel companies for damages for climate change-related harms. Neither state had actually filed such a lawsuit yet, although both had expressed interest in doing so. (Hawaii went ahead and filed its suit on Thursday night.)
“I just want to start by saying that these lawsuits by the government are totally unprecedented,” Rachel Rothschild, an assistant professor of Law at Michigan State University, told me when we hopped on the phone. To her knowledge, never before has the federal government tried to preemptively stop a state from filing a liability case against companies.
In an executive order in early April, Trump had directed Attorney General Pam Bondi to “stop the enforcement” of state climate laws and actions that “may be unconstitutional” or “preempted by federal law.” The order singled out lawsuits against oil companies as well as climate superfund laws, calling both a form of “extortion” and a “threat to economic and national security.”
Nevermind that climate change is a major threat to economic and national security, and states have filed these lawsuits and created these laws because they are scrambling to find ways to pay to address the unprecedented damages brought by the increasing severity of wildfires and floods.
Even before Trump took office, Rothschild said, the federal government had warned states that they were going to need to take more responsibility for preparing for and responding to increasing natural disasters. “[States] do not have the resources alone to address this problem,” said Rothschild. “These companies have engaged in an activity that causes external harms that they’ve not taken into account as part of their business practices, they’'re imposing all the costs of those harms on states and citizens, and they should be liable to help us deal with the resulting problems. That’s a very normal activity for tort suits.”
Dozens of states have filed similar lawsuits seeking damages from oil companies. (A Justice Department press release did not say why it was singling out states that had not taken any legal action yet rather than targeting those that had.) Many of these lawsuits have been stuck in a holding pattern for years, though. “Climate superfund” laws are a new legal strategy, modeled on the federal superfund program, that some states are testing to get oil companies to pay up.
The DOJ’s lawsuits claim that states cannot fine oil companies for their emissions because that authority lies with the federal government under the Clean Air Act. That argument is underpinned by the Environmental Protection Agency’s endangerment finding, which stems from a 2007 Supreme Court ruling that greenhouse gases are a pollutant as defined by the Clean Air Act, and therefore the EPA must determine whether these emissions pose a threat to public health. The court said that if the agency finds there is enough scientific evidence to say greenhouse gases are harmful, it must develop regulations to rein them in. EPA officially made this finding in 2009.
This was a big headache for Trump during his first term. He wasn’t allowed to simply repeal Barack Obama’s greenhouse gas rules — by law, he had to replace them. If he’s able to reverse the endangerment finding, however, he could undo climate protection rules and that would be that.
At the same time, he’d make oil companies much more vulnerable. “There is great concern that reversing the finding would open the door to a lot more nuisance lawsuits against all types of energy companies,” Jeff Holmstead, a partner with Bracewell, a lobbying firm, told E&E News. “It would eliminate one of the best arguments that oil companies have used to get lawsuits against them dismissed,” he added.
EPA administrator Lee Zeldin will face an uphill battle in reversing the finding, as there is a mountain of scientific evidence that greenhouse gases cause dangerous climate change. But Zeldin may instead try to argue that the EPA did not consider the cost of addressing these emissions when it made the initial finding — and that the costs of reining them in outweigh the costs of emitting freely.
Legal experts are skeptical this argument will go anywhere, either. In 2012, the D.C. Circuit Court found that the EPA’s endangerment finding should be based on science, not economics. Cost-benefit analyses and other policy considerations are relevant if the EPA finds that greenhouse gases do, in fact, pose a threat, but they “do not inform the ‘scientific judgment’” that the law requires the EPA to make, the judge ruled. Meanwhile, the Supreme Court’s decision last year to overturn “Chevron deference,” a decades-long precedent that gave agencies broad authority to interpret their statutory mandates, could also hurt Zeldin’s case.
Rothschild, for her part, is confident that states’ superfund laws and tort suits are defensible regardless of what happens to the endangerment finding. These actions have nothing to do with the Clean Air Act, she argued, because they are not an attempt to regulate emissions. “They're trying to impose liability for local, environmental, and public health harms from past activities,” she said.
One thing is for certain: Between states’ lawsuits suing oil companies, oil companies’ countersuits, the DOJ’s new lawsuits against states, and probably future suits against any actions the Trump administration takes on endangerment, there’s going to be a whole lot of new case law about greenhouse gases over the next four years.
The fundamentals are the same — it’s the tone that’s changed.
At some point in the past month, the hydrogen fuel cell developer Plug Power updated its website. Beneath a carousel explaining the hydrogen ecosystem and solutions for transporting fuel, the company’s home page now contains a section titled “Hydrogen at Work.”
“Hydrogen is key to energy independence, providing clean, reliable power while reducing reliance on imported fuels,” the text in this new box reads. “Plug’s hydrogen and fuel cell solutions strengthen the energy grid and enhance national security, positioning the U.S. as a leader in the global energy transition.”
It is fairly ordinary website copy, but to a keen reader, the text jumps out as an obvious Trump 2.0 tell. Plug Power — like many green economy companies — has pivoted to meet the political and economic moment, where “energy independence” and “energy dominance” are in and “climate” and “sustainability” are out.
“I am actually shocked every time I look at the website of a climate tech company that still uses the language from 12 months ago, from four months ago — that doesn’t do them any good,” Peter Atanasoff, the managing director and vice president of Scratch Media and Marketing, which helps B2B technology companies and climate tech businesses achieve growth and recognition, told me.
The shift in language is more significant than just brands chasing the latest buzzwords.
The first Trump administration saw broad-based pushback from the business community against Trump’s more inflammatory positions, especially by consumer-facing brands that played to the pussy hat-wearing, brunch-and-protest attitudes of the time. The CEOs of Facebook (now Meta), Nike, and Google issued statements of disappointment when the U.S. pulled out of the Paris Climate Agreement in 2017, and Tesla CEO Elon Musk even dropped out of the president’s business council over the decision. It was, needless to say, a very different time.
During Trump’s second term, he promised “retribution.” Many of the more moderate voices from his first administration are long gone, and there’s a palpable fear among nonprofits and businesses of drawing the wrong kind of attention from Washington, losing grant funding for saying the wrong thing. “The real trigger” for resulting differences in branding between the first and second Trump administrations has been “the change of tone and change of economic policy,” Atanasoff told me. “It is explicit opposition to any of these technologies."
The administration has launched an all-out assault not just on climate policy, but also on the very language of the energy transition. In a February memo obtained by E&E News, the Federal Emergency Management Agency listed 34 words to be erased from official documentation, including “global warming,” “carbon footprint,” “net zero,” and even “green.” As I’ve covered for Heatmap, farmers applying for Department of Agriculture grants have been encouraged to resubmit proposals with climate-focused language removed and “refocus … on expanding American energy production.” And at the National Oceanic and Atmospheric Administration, scientists have quickly learned to pivot to talking about “air pollution” rather than emissions, contending with a banned-words list of their own.
Lobbyists and clean energy companies that want to be in the administration’s good graces have adapted, as well. That has changed the tenor of green business at large. Alexander Bryden, who runs the Washington, D.C. office of Browning Environmental Communications, told me over email that tweaking brand language is “typical after any change of administration, particularly when there are significant shifts in policy.” But especially for organizations in the public eye, “it’s more important than ever to highlight the historic and potential economic benefits of environmental solutions — and show how they are supported by, and benefit, people across the political spectrum.”
The actual fundamentals of green business haven’t changed, though. On the contrary, in the first quarter of 2025, venture capitalists and private equity firms invested more than $5 billion in climate tech startups in the U.S., a 65% increase from the same period a year earlier, according to PitchBook data. While there are certainly obstacles like supply chain uncertainty and tariffs to contend with, especially for clean energy manufacturing, on the whole “it’s still a great time to start a climate startup,” Tommy Leep, the founder of the software-focused venture firm Jetstream, told my colleague Katie Brigham last November. His caveat? “Just don’t call it a climate startup.”
Roger Ballentine, the president of the management consulting service Green Strategies and the chairman of the White House Climate Change Task Force under President Bill Clinton, explained this thinking to me. “It’s what I refer to as climate capitalism, which is the realization that by incorporating climate change and its risks and opportunities into your business strategy, you’re actually going to be a more successful, more profitable, and more competitive company,” he said. Even with the recent economic turbulence, “That hasn’t changed. That’s not going to change.”
Where you do see adjustments, however, is “around the edges,” per Ballentine. Companies are attempting to match the frequency of the administration and, in turn, the broader policy ecosystem — a frequency that tends to be aggressive, assertive, and heavy on words like “dominance” and “security.” It might also take the form of decreasing the volume at which companies had previously shouted their climate bona fides.
Anya Nelson, the senior vice president of public relations at Scratch M+M, said her team has also advised touting “American-made production” in brand messaging, and reframing copy to focus on “the positive impacts and immediate business benefits” of the companies, rather than more idealistic messaging about climate goals that may have had stronger resonance during the Biden administration.
At this point, you may have noticed that I haven’t quoted any corporate brand officers. That’s not because I didn’t try to talk to any. (Even Plug Power, my example at the beginning of this story, didn’t respond to a request for comment on the change in their messaging.) Though the sudden prevalence of terms like “energy dominance” becomes conspicuous once you start to look for them, no one wants to draw the wrong kind of attention from the administration. It’s part of a greater trend of clamming up that my colleagues and I have experienced across sectors in our reporting, and at a time when even the word “green” can give you a black mark, I can’t say I don’t understand.
Ballentine, the Green Strategies president, dismissed reading too much into how language itself changes under President Trump. “If yesterday a new technology company was touting itself as a climate solution, and now it’s touting itself as a way to achieve energy dominance — I don’t care,” he said.
His thinking was more pragmatic. “Good business remains good business,” Ballentine went on. “Around the edges, will things change? Yes. General belt tightening? Yes. Fundamental change of direction? No.”
It might sound like branding agencies are encouraging companies to “play along” with the administration, but Nelson of Scratch M+M stressed that wasn’t what she was trying to say. At the end of the day, “your end goal is to be a viable company, right?” she said. “To be a thriving company that is going to change the world, first and foremost, you need to make sure you don’t go out of business.” The message might be more accurately summarized as “read the room.”
A report from Heatmap’s San Francisco Climate Week event with Tom Steyer.
Last Thursday at San Francisco Climate Week, Heatmap hosted an event with a lineup of industry leaders and experts to discuss the most promising up-and-coming climate tech innovations amidst a backdrop of tariff and tax credit uncertainty.
Guests at Heatmap's event, Climate Tech's Next Winners.Sean Vranizan
First up, Heatmap executive editor Robinson Meyer sat down with Tom Steyer, the billionaire investor and co-founder of Galvanize Climate Solutions, to explore the most promising climate technologies to scale. “No one's going to adopt new technologies to be nice,” Steyer noted. “They're gonna adopt new technologies because they're better, because they're a better deal, because they're cheaper or in some ways solve a pain point for the customer.” Steyer went on to emphasize that there is at least one “transformational and disruptive” idea for every six verticals in the climate industry — for example, measuring carbon sequestration in nature with machine learning andAI, a concept that was “literally unimaginable 5 years ago.”
Tom Steyer and Robinson Meyer.Sean Vranizan
As for the Trump-sized elephant in the room, Steyer encouraged climate tech startups to focus on “good leadership” as well as the willingness to adapt in this uncertain moment. “You’re gonna have hard times, and the world is going to change, and you’re going to have to figure out what to do,“ he said. Steyer also noted that all Americans, not only those working in climate tech, should understand the energy transition as a background condition of their careers. “If you want to be a screenwriter (...) be a screenwriter. But it’s really important that you put [the energy transition] into your screenwriting. If you‘re a banker (...) be a banker with an awareness of this issue. Bank the good stuff, not the bad stuff,” Steyer explained. He finished up the discussion with a remembrance of the late Pope Francis, a “tremendous human being for the planet.”
Sam D'Amico and Nico Lauricella.Sean Vranizan
Also on Thursday was a lightning talk between Nico Lauricella, Heatmap’s CEO and editor in chief, and Sam D’Amico, the founder and CEO of Impulse Labs, which sponsored the event. D'Amico explained that in addition to being an induction stove, Impulse’s Cooktop is “a way to get battery storage into people's homes” — a “concept car” for using batteries in appliances to create a more decentralized grid. Lauricella and D’Amico also discussed the impacts of Trump’s tariffs on clean tech companies like Impulse, with D’Amico advising other founders in the room to build prototypes based on the supply chain and to make sure they have options in terms of where their products are manufactured so they can keep up with changing trade policies.
Impulse's high-power Cooktop on display at the event.Sean Vranizan
Lastly, Heatmap News staff writer Katie Brigham hosted a panel with Gabriel Kra, managing director and co-founder at Prelude Ventures, Clea Kolster, partner and head of science at Lowercarbon Capital, and Rajesh Swaminathan, partner at Khosla Ventures. The group spoke about the unique circumstances facing investors in the climate technology space, what their firms are looking for when investing in the newest climate innovations, and how AI fits into the picture.
Katie Brigham, Clea Kolster, Gabriel Kra, and Rajesh Swaminathan.Sean Vranizan
All three panelists acknowledged that it’s a delicate time for clean tech investors and companies alike. “Volatility and uncertainty are the enemies of running and planning a business,” warned Kra. The true cost of the tariffs is therefore extremely high, Kra explained. Kolster agreed that things are generally gloomy in the investment space, but also highlighted the technologies that are currently thriving. Carbon removal, she pointed out, “is going better than ever. Contracts are being inked right now, in the past few weeks.” The companies and technologies she’s excited about, Kolster added, are building “cheaper, better, faster,” as Steyer pointed out earlier in the evening.
Swaminathan added that there will always be a certain element of risk when it comes to investing in emerging technologies. “Clean tech companies have so many single points of failure,” he said. “And you have to prop up each part with the right leadership team. You have to have strong pillars so that [your company] doesn’t break.”
Guests following the discussion.Sean Vranizan
Sean Vranizan
Sean Vranizan
Sean Vranizan
Sean Vranizan
Sean Vranizan
Guests at SFCW
Sean Vranizan
Thank you to our presenting sponsor, Impulse, as well as our supporting sponsor, V2 Communications, and our event host, IndieBio.