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A handful of bills have been introduced that seek to adapt to more frequent heat waves.

What are we going to do about the heat? As devastatingly hot as this summer has been — and it has broken records and likely killed thousands of Americans — next summer will almost certainly be worse. Will Congress act?
New federal legislation to attack the root of the problem by reducing carbon emissions isn’t on the table, thanks to Republican control of the House. But that doesn’t mean there’s zero chance of any kind of heat legislation emerging this year. Republicans have proven open to funding ideas like better hurricane forecasting, the streamlining of flood insurance claims, and more seawalls — all things that get lumped into the category of adaptation to extreme weather or resilience. Could something similar be possible for heat?
A handful of bills have been introduced — almost all by Democrats — that seek to adapt to heat in one way or another. Because adapting to hotter temperatures isn’t as simple as erecting new levies, all the legislation seeks in one way or another to ensure everyone has access to a cooler environment. That might mean giving people money to keep their air conditioners running, funding cooling centers, or building shade outside.
Here are the bills, from most reactive to most proactive:
1. The Extreme Heat Emergency Act: This bill would put heat waves on FEMA’s list of major disaster qualifying events — making funds available for cooling centers and additional personnel. Representative Ruben Gallego, a Democrat from Arizona, introduced the bill alongside Representatives Mark Amodei, a Republican from Nevada, and Sylvia Garcia, a Democrat from Texas..
It might have a better chance with Republicans than its counterparts because FEMA is familiar, says Bob Inglis, a former Republican congressman from South Carolina and the executive director of RepublicEn, a project of the Center for Climate Change Communication at George Mason University that seeks to use “conservative principles” to solve climate change. The agency “butters the bread in conservative districts” in Texas, Louisiana, and Florida when disaster strikes, Inglis explained.
The problem is that FEMA funding only arrives after a disaster has already taken place. Alex Flint, executive director of the right-leaning climate think tank Alliance for Market Solutions, referred to FEMA funding and emergency supplemental bills as “old tools.”
“We will see the need to address higher temperatures in the defense bill, transportation bill, farm bill,” he said. “But policymakers are only just starting to grapple with the near-term effects of this long-term crisis.”
“Things can get more expensive after the fact,” Amy Bailey, director of climate resilience and sustainability at the Center for Climate and Energy Solutions, told me.
2. The Heating and Cooling Relief Act: This bill, introduced by Massachusetts Senator Ed Markey and New York Representative Jamaal Bowman, both Democrats, would inject tens of billions of dollars into the Low Income Home Energy Assistance Program, which helps low-income families pay their utility bills. The bill would also increase funding for cooling assistance — but it also hasn’t attracted a single Republican cosponsor, consistent with the party’s wariness about extending government assistance to low-income Americans.
3. The SHADE Act: This bill would do what its name implies and fund the creation of shade to attack urban heat islands, especially in areas that are low-income or have historically experienced discrimination. The bill has attracted 55 cosponsors — all Democrats.
4. The Preventing HEAT Illness and Death Act: Of the options, this bill is the most wide-reaching. It calls for a study that would identify the gaps in what we know about extreme heat as well as the public facilities (read: schools and prisons) without air conditioning. It would also offer $100 million in financial assistance to communities that want to adapt to extreme heat — installing cool roofs, creating more urban forestry, or making a grid more resilient, as well as training on risk communications — with the condition that 40% of its funding goes towards communities that are low-income or have environmental justice concerns. And it also calls for similar interagency communication on extreme heat that already exists for hurricanes and floods.
“It’s a perfectly reasonable bill that’s aimed towards saving lives on the ground,” said Alice Nam, press secretary for Representative. Marilyn Strickland, a Democrat from Washington state and one of the bill’s House sponsors. “It doesn’t propose a one-size fits all solution.”
“We need the federal government to respond with the urgency these climate and public health crises demand,” sponsor Senator Ed Markey, Democrat of Massachusetts, wrote in a statement to Heatmap.
And interagency communication, Bailey added, would be an “incredible benefit” — helping communities access resources faster. Extreme climate events that cost more than $1 billion, she noted, happened on average every 18 days in 2022, so speed is key.
Markey introduced the same bill in 2021, which advanced out of the Senate Commerce Committee in a bipartisan vote. This year’s version doesn’t have a single Republican co-sponsor in the House — though its authors are actively looking for them, Nam said.
“It’s really hard to tell what is too big of a pill for Republicans to swallow,” she said.
Last Congress, the bill was introduced into the House Energy and Commerce Committee and the House Science, Space and Technology Committee — meaning that this time, either Representative Frank Lucas, Republican of Oklahoma, or Representative Cathy McMorris Rodgers, Republican of Washington state, would need to hear the bill, and Republicans on either of those committees would need to vote in its favor.
Inglis noted that Republicans would likely take issue with the fact that the bill relies on a comparatively narrow set of funds and grants, in addition to the possibility that it could add regulations to plans to adapt to heat. “Conservatives are right to say we don’t need a U.S. Department of Trees for cities,” Inglis said, noting that Republican members would likely prefer for cities to lead the charge themselves — though he added that that still often requires federal block grants.
But eventually, Flint said, Republicans — even in the House — will come around to the idea that the government should spend money to fund adaptation to climate change.
“Voters of all political persuasions are going to be impacted by fires, flooding, hurricanes, and politicians will have to respond,” he noted. “The climate doesn’t care about people’s politics and will change the lives of Republicans and Democrats alike.”
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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.”