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And not for the first time.

The Department of Energy proposed sweeping changes to its rules for updating efficiency standards for household appliances on Thursday. If finalized, they would hamstring future administrations from issuing tighter standards that would save consumers money as higher-performing air conditioners, stoves, washing machines, refrigerators, and the like hit the market.
While the agency portrayed the move as bringing an end to appliance standards writ large, that is not, in fact, what it is doing. The proposal would update the DOE’s so-called “Process Rule,” which governs how the agency develops standards, adding onerous requirements that will make it much more difficult to make any changes at all.
Under the Energy Policy and Conservation Act, the DOE is generally required to review existing standards every six years and assess whether recent technological advances warrant raising the bar for efficiency for any given product category. Updating the standards involves extensive technological and economic analysis, including looking at the cost to manufacturers and payback periods for consumers, as well as several rounds of public comment. After a new standard is issued, products that fail to meet that level of efficiency have to be taken off the market.
The new proposal delivers on the appliance industry’s request that President Trump restore the process he finalized during his first term, which Biden swiftly reversed. The changes include raising the minimum energy savings required to issue a new standard, adding several more steps and requirements to the rulemaking process for new standards, and using industry-developed test procedures to measure the efficiency of new products.
“This obstacle course of restrictions would hinder the department from carrying out its congressional mandate to protect consumers,” Andrew deLaski, executive director of the Appliance Standards Awareness Project, said in a statement. “We have products that keep getting more efficient and we need to embrace these technological advances, not reject them, especially as data centers strain our electric grid.”
Manufacturers welcomed the announcement. “AHAM applauds the Department of Energy for acting swiftly and delivering a proposed Process Rule that reflects years of constructive engagement with manufacturers, consumers, and other stakeholders,” Kelly Mariotti, the Association of Home Appliance Manufacturers’ president and CEO, said in a statement. The Air-Conditioning, Heating, and Refrigeration Institute also told me it “strongly supports DOE’s review” of the rules, although both groups said they were still working through the proposal.
The Energy Department issued a request for information last April seeking comments on potential changes to its procedures for revising energy conservation standards. At the time, the industry’s biggest trade groups urged the agency to “return to the 2020 version of the Process Rule.”
Trump has long been sympathetic to the industry’s ire over ever-tightening standards. He’s complained about dishwashers and heating systems that no longer work and showers that slow to a trickle. Now, Energy Secretary Chris Wright has joined in, grumbling about clothes dryers that run for multiple cycles.
The Process Rule changes threaten the potential to create significant consumer savings, however, according to the Appliance Standards Awareness Project. The group estimates that based on recent technological advances, the DOE’s next round of standard updates could save the average U.S. household $160 per year on their utility bills, and businesses a collective $15 billion in annual operating costs over 20 years. The group also projects that updated standards have the potential to reduce summer peak electricity demand 34 gigawatts by 2040, which would be like taking New York City off the grid. There are climate benefits, too, of course — an estimated reduction of 800 million metric tons of carbon emissions through 2050.
Even if finalized, Trump’s changes to the Process Rule will not be irreversible, and could continue to ping pong back and forth between administrations, “creating the kind of uncertainty and instability that makes it difficult for manufacturers to plan, invest, and innovate with confidence to the benefit of American consumers,” according to Mariotti of AHAM. The industry’s hope is for Congress to amend the underlying Energy Policy and Conservation act to “lock these reforms into statute,” she said. One such effort, the Don’t Mess With My Home Appliances Act introduced by Republican Representative Rick Allen of Georgia, passed the House in February.
The DOE’s proposal follows a memorandum of agreement the agency reached with the Environmental Protection Agency in March to take over as the lead agency running the EnergyStar labeling program, which identifies the most efficient appliances in a given category. The Process Rule changes will not affect EnergyStar, however.
The DOE is accepting public comments on its proposal for 30 days and will hold a public meeting on July 15.
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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.”