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On the energy secretary’s keynote, Ontario’s electricity surcharge, and record solar power

Current conditions: Critical fire weather returns to New Mexico and Texas and will remain through Saturday • Sharks have been spotted in flooded canals along Australia’s Gold Coast after Cyclone Alfred dropped more than two feet of rain • A tanker carrying jet fuel is still burning after it collided with a cargo ship in the North Sea yesterday. The ship was transporting toxic chemicals that could devastate ecosystems along England’s northeast coast.
In a keynote speech at the energy industry’s annual CERAWeek conference, Energy Secretary Chris Wright told executives and policymakers that the Trump administration sees climate change as “a side effect of building the modern world,” and said that “everything in life involves trade-offs." He pledged to “end the Biden administration’s irrational, quasi-religious policies on climate change” and insisted he’s not a climate change denier, but rather a “climate realist.” According to The New York Times, “Mr. Wright’s speech was greeted with enthusiastic applause.” Wright also reportedly told fossil fuel bosses he intended to speed up permitting for their projects.
Other things overheard at Day 1 of CERAWeek:
The premier of Canada’s Ontario province announced he is hiking fees on electricity exported to the U.S. by 25%, escalating the trade war kicked off by President Trump’s tariffs on Canadian goods, including a 10% tariff on Canadian energy resources. The decision could affect prices in Minnesota, New York, and Michigan, which get some of their electricity from the province. Ontario Premier Doug Ford estimated the surcharge will add about $70 to the monthly bills of affected customers. “I will not hesitate to increase this charge,” Ford said. “If the United States escalates, I will not hesitate to shut the electricity off completely.” The U.S. tariffs went into effect on March 4. Trump issued another 30-day pause just days later, but Ford said Ontario “will not relent” until the threat of tariffs is gone for good.
There was a lot of news from the White House yesterday that relates to climate and the energy transition. Here’s a quick rundown:
The EPA cancelled hundreds of environmental justice grants: EPA Administrator Lee Zeldin and Elon Musk’s so-called Department of Government Efficiency nixed 400 grants across environmental justice programs and diversity, equity, and inclusion programs worth $1.7 billion. Zeldin said this round of cuts “was our biggest yet.”
Transportation Secretary Sean Duffy rescinded Biden memos about infrastructure projects: The two memos encouraged states to prioritize climate change resilience in infrastructure projects funded by the Bipartisan Infrastructure Law, and to include under-represented groups when planning projects.
The military ended funding for climate studies: This one technically broke on Friday. The Department of Defense is scrapping its funding for social science research, which covers climate change studies. In a post on X, Defense Secretary Pete Hegseth said DOD “does not do climate change crap. We do training and war fighting.”
Meanwhile, a second nonprofit – the Coalition for Green Capital – filed a lawsuit against Citibank over climate grant money awarded under the Inflation Reduction Act but frozen by Zeldin’s EPA. Climate United filed a similar lawsuit (but targeting the EPA, as well as Citibank) on Saturday.
A new report from the Princeton ZERO Lab’s REPEAT Project examines the potential consequences of the Trump administration’s plans to kill existing EV tax credits and repeal EPA tailpipe regulations. It finds that, compared to a scenario in which the current policies are kept in place:
“In other words, killing the IRA tax credits for EVs will decimate the nascent renaissance in vehicle and battery manufacturing investment and employment we’re currently seeing play out across the United States,” said Jesse Jenkins, an assistant professor and expert in energy systems engineering and policy at Princeton University and head of the REPEAT Project. (Jenkins is also the co-host of Heatmap’s Shift Key podcast.)

The U.S. installed nearly 50 gigawatts of new solar power capacity last year, up 21% from 2023, according to a new report from the Solar Energy Industries Association (SEIA) and Wood Mackenzie. That’s a record, and the largest annual grid capacity increase from any energy technology in the U.S. in more than 20 years. Combined with storage, solar represents 84% of all new grid capacity added in 2024.

Last year was “the year of materialization of the IRA,” with supply chains becoming more resilient and interest from utilities and corporate buyers growing. Installations are expected to remain steady this year, with little growth, because of policy uncertainty. Total U.S. solar capacity is expected to reach 739 GW by 2035, but this depends on policy. The worst case scenario shows a 130 GW decline in deployment through 2035, which would represent $250 billion in lost investments.
“Last year’s record-level of installations was aided by several solar policies and credits within the Inflation Reduction Act that helped drive interest in the solar market,” said Sylvia Levya Martinez, a principal analyst of North America utility-scale solar for Wood Mackenzie. “We still have many challenges ahead, including unprecedented load growth on the power grid. If many of these policies were eliminated or significantly altered, it would be very detrimental to the industry’s continued growth.”
Tesla shares plunged yesterday by 15%, marking the company’s worst day on the market since 2020 and erasing its post-election stock bump.
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The spinoff of Lawrence Livermore National Lab has a new 10-point plan to get onto the grid by the 2030s.
One of fusion energy’s newest startups, Inertia Enterprises, is betting that the fastest route to commercial fusion runs through one of the field’s oldest ideas. The company, which raised a $450 million Series A earlier this year, plans to build a power plant based on the laser-driven fusion system pioneered at Lawrence Livermore National Laboratory’s — the only tech yet to have produced more energy from a fusion reaction than it took to initiate it. Now, Inertia has shared its commercialization roadmap exclusively with Heatmap, detailing the 10 near-term capabilities it must demonstrate before this landmark experiment can become a grid-scale power plant by the mid-2030s.
The roadmap offers a route from the national lab’s impressive but commercially impractical fusion demonstrations to an economical power plant capable of producing electricity for the grid. At its core are a set of milestones — mostly aimed at developing cheap, mass-manufacturable components — that Inertia says it must clear before those individual systems can be integrated into a working plant. This road is not necessarily linear, however, as various teams will likely be working on many of these goals simultaneously.
At least the physics of Inertia’s approach are already proven, the startup’s CEO Jeff Lawson told me, pointing to the fusion experiments at Lawrence Livermore’s National Ignition Facility as a proof-of-concept. The lab’s demonstration of net energy gain caps more than six decades and $30 billion (in 2026 dollars) of U.S. fusion research. The remaining challenges, he argued, are all engineering-related, requiring “elbow grease, hard work, and smart people” rather than breakthroughs in fusion science.
"It seems to us like a startup or a commercial company of any variety should be focused on commercializing a proven scientific result, as opposed to actually trying to demonstrate the basic science to begin with," Lawson told me. Basic science, he argues, is better left to national labs and universities, where researchers can pursue "unbounded problems" that don’t align with the expectations and timelines of venture-backed startups.
Indeed, no fusion startup has yet achieved scientific breakeven, the milestone Lawrence Livermore first hit in 2022, and has since repeated numerous times. But leading players such as Commonwealth Fusion Systems and Helion Energy maintain that it’s only a matter of time before they validate the physics behind their own reactor designs, which they claim will be highly cost-competitive.
Lawson, on the other hand, readily acknowledged that Lawrence Livermore’s tech is uneconomical in its current form. His bet is simply that the more predictable path to a commercial reactor is to drive down the cost of the lab’s validated fusion approach, known as inertial confinement. This system relies on high-powered lasers firing at a millimeter-scale pellet of fusion fuel, compressing it to extreme temperatures and pressures until the atoms fuse. Today, the National Ignition Facility makes each individual fusion target by hand, a workable solution given that it only uses about a dozen per year.
That production model, however, isn’t remotely plausible for a grid-scale power plant. Because each fusion reaction lasts just a fraction of a billionth of a second, a commercial facility must fire its lasers at a fresh target about 10 times per second to generate continuous electricity — requiring the production of hundreds of millions of targets each year.
Scaling production to roughly a million pellets per day and making them inexpensive enough for commercial operation without compromising the strength or precision required for fusion ignition is central to Inertia’s roadmap. That includes goals five, seven, eight and nine — industrializing the manufacturing of the carbon shells that hold the fusion fuel, making the thin films that hold those carbon shells both durable and cheap, scaling up and automating fusion target assembly, and speeding up how fast targets are filled with the requisite deuterium-tritium fuel.
The other central focus of the roadmap is the laser system, which will ultimately consist of 1,000 individual units operating in concert to compress and heat the fusion fuel. Key priorities include reducing the system’s cost (goal two), dramatically increasing its firing cadence (goal three), and bolstering its durability to withstand high-intensity operations (goal four). Goal six also complements these efforts, calling for the development of a control system capable of tracking moving fusion targets to precisely align each laser shot.
Goals one and 10 bookend the journey with some broader milestones. The first focuses on increasing the fusion target’s energy gain — the ratio of fusion energy produced to laser energy delivered — to more than 25 times ignition. Today, the National Ignition Facility’s best-performing laser shot has yielded a gain of just over four times what it took to start the reaction. Goal 10 then zooms out to the ultimate objective: integrating all these technologies into a commercially viable power plant that can deliver either electricity or industrial heat to end customers.
To reach that point, Inertia has embarked on an industrial engineering hiring spree, recruiting folks with experience taking complex hardware systems from prototype to mass production, “not unlike the processes that are used in the semiconductor or consumer electronics world,” Lawson explained. The company has been making progress on its component development goals since the beginning of the year, he told me, and expects to announce the successful demonstration of a few of these milestones in the coming months. Lawson ultimately expects Inertia to complete the core components of its laser and target manufacturing systems by the middle of next year.
The team will spend the next two to three years integrating these individual pieces into two fully operational subsystems, a prototype laser system and a target manufacturing line. Around 2030, the company will begin combining those subsystems into a first-of-a-kind fusion power plant, which will also serve as the proving ground for the target chamber, tritium fuel breeding system, and power conversion system that turns fusion heat into electricity. By the middle of the next decade, Inertia aims to be generating power from this first plant, setting the stage for the company to build and connect additional grid-scale commercial power plants.
There are plenty of engineering trade-offs that the company will have to solve for. Take the decision around how to size the target chamber, for example. “If you make it bigger, your walls have an easier time and survive longer, but it’s more expensive. If you make it smaller, your walls have a tougher time because they’re closer to all the heat and energy that the fusion reaction is creating, but now your power plant costs less to build.”
But to Lawson, this represents exactly the type of problem Inertia was built to solve: complex engineering issues that come to the fore once scientists have demonstrated the fundamental physics are sound. He thinks other fusion companies may someday reach this stage, as well — though he’s unwilling to hazard a guess on exactly what approach or startup is best positioned to do so.
“There have been generations of scientists who’ve made their predictions about fusion energy and gotten it wrong,” he told me. “I’m not going to pretend to be smarter than them. All I’m here to say is, just knowing that one did work, we can commercialize it.”