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Paradise, California, is snatching up high-risk properties to create a defensive perimeter and prevent the town from burning again.
The 2018 Camp Fire was the deadliest wildfire in California’s history, wiping out 90% of the structures in the mountain town of Paradise and killing at least 85 people in a matter of hours. Investigations afterward found that Paradise’s town planners had ignored warnings of the fire risk to its residents and forgone common-sense preparations that would have saved lives. In the years since, the Camp Fire has consequently become a cautionary tale for similar communities in high-risk wildfire areas — places like Chinese Camp, a small historic landmark in the Sierra Nevada foothills that dramatically burned to the ground last week as part of the nearly 14,000-acre TCU September Lightning Complex.
More recently, Paradise has also become a model for how a town can rebuild wisely after a wildfire. At least some of that is due to the work of Dan Efseaff, the director of the Paradise Recreation and Park District, who has launched a program to identify and acquire some of the highest-risk, hardest-to-access properties in the Camp Fire burn scar. Though he has a limited total operating budget of around $5.5 million and relies heavily on the charity of local property owners (he’s currently in the process of applying for a $15 million grant with a $5 million match for the program) Efseaff has nevertheless managed to build the beginning of a defensible buffer of managed parkland around Paradise that could potentially buy the town time in the case of a future wildfire.
In order to better understand how communities can build back smarter after — or, ideally, before — a catastrophic fire, I spoke with Efseaff about his work in Paradise and how other communities might be able to replicate it. Our conversation has been lightly edited and condensed for clarity.
Do you live in Paradise? Were you there during the Camp Fire?
I actually live in Chico. We’ve lived here since the mid-‘90s, but I have a long connection to Paradise; I’ve worked for the district since 2017. I’m also a sea kayak instructor and during the Camp Fire, I was in South Carolina for a training. I was away from the phone until I got back at the end of the day and saw it blowing up with everything.
I have triplet daughters who were attending Butte College at the time, and they needed to be evacuated. There was a lot of uncertainty that day. But it gave me some perspective, because I couldn’t get back for two days. It gave me a chance to think, “Okay, what’s our response going to be?” Looking two days out, it was like: That would have been payroll, let’s get people together, and then let’s figure out what we’re going to do two weeks and two months from now.
It also got my mind thinking about what we would have done going backwards. If you’d had two weeks to prepare, you would have gotten your go-bag together, you’d have come up with your evacuation route — that type of thing. But when you run the movie backwards on what you would have done differently if you had two years or two decades, it would include prepping the landscape, making some safer community defensible space. That’s what got me started.
Was it your idea to buy up the high-risk properties in the burn scar?
I would say I adapted it. Everyone wants to say it was their idea, but I’ll tell you where it came from: Pre-fire, the thinking was that it would make sense for the town to have a perimeter trail from a recreation standpoint. But I was also trying to pitch it as a good idea from a fuel standpoint, so that if there was a wildfire, you could respond to it. Certainly, the idea took on a whole other dimension after the Camp Fire.
I’m a restoration ecologist, so I’ve done a lot of river floodplain work. There are a lot of analogies there. The trend has been to give nature a little bit more room: You’re not going to stop a flood, but you can minimize damage to human infrastructure. Putting levees too close to the river makes them more prone to failing and puts people at risk — but if you can set the levee back a little bit, it gives the flood waters room to go through. That’s why I thought we need a little bit of a buffer in Paradise and some protection around the community. We need a transition between an area that is going to burn, and that we can let burn, but not in a way that is catastrophic.
How hard has it been to find willing sellers? Do most people in the area want to rebuild — or need to because of their mortgages?
Ironically, the biggest challenge for us is finding adequate funding. A lot of the property we have so far has been donated to us. It’s probably upwards of — oh, let’s see, at least half a dozen properties have been donated, probably close to 200 acres at this point.
We are applying for some federal grants right now, and we’ll see how that goes. What’s evolved quite a bit on this in recent years, though, is that — because we’ve done some modeling — instead of thinking of the buffer as areas that are managed uniformly around the community, we’re much more strategic. These fire events are wind-driven, and there are only a couple of directions where the wind blows sufficiently long enough and powerful enough for the other conditions to fall into play. That’s not to say other events couldn’t happen, but we’re going after the most likely events that would cause catastrophic fires, and that would be from the Diablo winds, or north winds, that come through our area. That was what happened in the Camp Fire scenario, and another one our models caught what sure looked a lot like the [2024] Park Fire.
One thing that I want to make clear is that some people think, “Oh, this is a fire break. It’s devoid of vegetation.” No, what we’re talking about is a well-managed habitat. These are shaded fuel breaks. You maintain the big trees, you get rid of the ladder fuels, and you get rid of the dead wood that’s on the ground. We have good examples with our partners, like the Butte Fire Safe Council, on how this works, and it looks like it helped protect the community of Cohasset during the Park Fire. They did some work on some strips there, and the fire essentially dropped to the ground before it came to Paradise Lake. You didn’t have an aerial tanker dropping retardant, you didn’t have a $2-million-per-day fire crew out there doing work. It was modest work done early and in the right place that actually changed the behavior of the fire.
Tell me a little more about the modeling you’ve been doing.
We looked at fire pathways with a group called XyloPlan out of the Bay Area. The concept is that you simulate a series of ignitions with certain wind conditions, terrain, and vegetation. The model looked very much like a Camp Fire scenario; it followed the same pathway, going towards the community in a little gulch that channeled high winds. You need to interrupt that pathway — and that doesn’t necessarily mean creating an area devoid of vegetation, but if you have these areas where the fire behavior changes and drops down to the ground, then it slows the travel. I found this hard to believe, but in the modeling results, in a scenario like the Camp Fire, it could buy you up to eight hours. With modern California firefighting, you could empty out the community in a systematic way in that time. You could have a vigorous fire response. You could have aircraft potentially ready. It’s a game-changing situation, rather than the 30 minutes Paradise had when the Camp Fire started.
How does this work when you’re dealing with private property owners, though? How do you convince them to move or donate their land?
We’re a Park and Recreation District so we don’t have regulatory authority. We are just trying to run with a good idea with the properties that we have so far — those from willing donors mostly, but there have been a couple of sales. If we’re unable to get federal funding or state support, though, I ultimately think this idea will still have to be here — whether it’s five, 10, 15, or 50 years from now. We have to manage this area in a comprehensive way.
Private property rights are very important, and we don’t want to impinge on that. And yet, what a person does on their property has a huge impact on the 30,000 people who may be downwind of them. It’s an unusual situation: In a hurricane, if you have a hurricane-rated roof and your neighbor doesn’t, and theirs blows off, you feel sorry for your neighbor but it’s probably not going to harm your property much. In a wildfire, what your neighbor has done with the wood, or how they treat vegetation, has a significant impact on your home and whether your family is going to survive. It’s a fundamentally different kind of event than some of the other disasters we look at.
Do you have any advice for community leaders who might want to consider creating buffer zones or something similar to what you’re doing in Paradise?
Start today. You have to think about these things with some urgency, but they’re not something people think about until it happens. Paradise, for many decades, did not have a single escaped wildfire make it into the community. Then, overnight, the community is essentially wiped out. But in so many places, these events are foreseeable; we’re just not wired to think about them or prepare for them.
Buffers around communities make a lot of sense, even from a road network standpoint. Even from a trash pickup standpoint. You don’t think about this, but if your community is really strung out, making it a little more thoughtfully laid out also makes it more economically viable to provide services to people. Some things we look for now are long roads that don’t have any connections — that were one-way in and no way out. I don’t think [the traffic jams and deaths in] Paradise would have happened with what we know now, but I kind of think [authorities] did know better beforehand. It just wasn’t economically viable at the time; they didn’t think it was a big deal, but they built the roads anyway. We can be doing a lot of things smarter.
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The failure of the once-promising sodium-ion manufacturer caused a chill among industry observers. But its problems may have been more its own.
When the promising and well funded sodium-ion battery company Natron Energy announced that it was shutting down operations a few weeks ago, early post-mortems pinned its failure on the challenge of finding a viable market for this alternate battery chemistry. Some went so far as to foreclose on the possibility of manufacturing batteries in the U.S. for the time being.
But that’s not the takeaway for many industry insiders — including some who are skeptical of sodium-ion’s market potential. Adrian Yao, for instance, is the founder of the lithium-ion battery company EnPower and current PhD student in materials science and engineering at Stanford. He authored a paper earlier this year outlining the many unresolved hurdles these batteries must clear to compete with lithium-iron-phosphate batteries, also known as LFP. A cheaper, more efficient variant on the standard lithium-ion chemistry, LFP has started to overtake the dominant lithium-ion chemistry in the electric vehicle sector, and is now the dominant technology for energy storage systems.
But, he told me, “Don’t let this headline conclude that battery manufacturing in the United States will never work, or that sodium-ion itself is uncompetitive. I think both those statements are naive and lack technological nuance.”
Opinions differ on the primary advantages of sodium-ion compared to lithium-ion, but one frequently cited benefit is the potential to build a U.S.-based supply chain. Sodium is cheaper and more abundant than lithium, and China hasn’t yet secured dominance in this emerging market, though it has taken an early lead. Sodium-ion batteries also perform better at lower temperatures, have the potential to be less flammable, and — under the right market conditions — could eventually become more cost-effective than lithium-ion, which is subject to more price volatility because it’s expensive to extract and concentrated in just a few places.
Yao’s paper didn’t examine Natron’s specific technology, which relied on a cathode material known as “Prussian Blue Analogue,” as the material’s chemical structure resembles that of the pigment Prussian Blue. This formula enabled the company’s batteries to discharge large bursts of power extremely quickly while maintaining a long cycle life, making it promising for a niche — but crucial — domestic market: data center backup power.
Natron’s batteries were designed to bridge the brief gap between a power outage and a generator coming online. Today, that role is often served by lead-acid batteries, which are cheap but bulky, with a lower energy density and shorter cycle life than sodium-ion. Thus, Yao saw this market — though far smaller than that of grid-scale energy storage — as a “technologically pragmatic” opportunity for the company.
“It’s almost like a supercapacitor, not a battery,” one executive in the sodium-ion battery space who wished to remain anonymous told me of Natron’s battery. Supercapacitors are energy storage devices that — like Natron’s tech — can release large amounts of power practically immediately, but store far less total energy than batteries.
“The thing that has been disappointing about the whole story is that people talk about Natron and their products and their journey as if it’s relevant at all to the sodium-ion grid scale storage space,” the executive told me. The grid-scale market, they said, is where most companies are looking to deploy sodium-ion batteries today. “What happened to Natron, I think, is very specific to Natron.”
But what exactly did happen to the once-promising startup, which raised over $363 million in private investment from big name backers such as Khosla Ventures and Prelude Ventures? What we know for sure is that it ran out of money, canceling plans to build a $1.4 billion battery manufacturing facility in North Carolina. The company was waiting on certification from an independent safety body, which would have unleashed $25 million in booked orders, but was forced to fold before that approval came through.
Perhaps seeing the writing on the wall, Natron’s founder, Colin Wessells, stepped down as CEO last December and left the company altogether in June.
“I got bored,” Wessels told The Information of his initial decision to relinquish the CEO role. “I found as I was spending all my time on fundraising and stockholder and board management that it wasn’t all that much fun.”
It’s also worth noting, however, that according to publicly available data, the investor makeup of Natron appears to have changed significantly between the company’s $35 million funding round in 2020 and its subsequent $58 million raise in 2021, which could indicate qualms among early backers about the direction of the company going back years. That said, not all information about who invested and when is publicly known. I reached out to both Wessels and Natron’s PR team for comment but did not receive a reply.
The company submitted a WARN notice — a requirement from employers prior to mass layoffs or plant closures — to the Michigan Department of Labor and Economic Opportunity on August 28. It explained that while Natron had explored various funding avenues including follow-on investment from existing shareholders, a Series B equity round, and debt financing, none of these materialized, leaving the company unable “to cover the required additional working capital and operational expenses of the business.”
Yao told me that the startup could have simply been a victim of bad timing. “While in some ways I think the AI boom was perfect timing for Natron, I also think it might have been a couple years too early — not because it’s not needed, but because of bandwidth,” he explained. “My guess is that the biggest thing on hyperscalers’ minds are currently still just getting connected to the grid, keeping up with continuous improvements to power efficiency, and how to actually operate in an energy efficient manner.” Perhaps in this environment, hyperscalers simply viewed deploying new battery tech for a niche application as too risky, Yao hypothesized, though he doesn’t have personal knowledge of the company’s partnerships or commercial activity.
The sodium-ion executive also thought timing might have been part of the problem. “He had a good team, and the circumstances were just really tough because he was so early,” they said. Wessells founded Natron in 2012, based on his PhD research at Stanford. “Maybe they were too early, and five years from now would have been a better fit,” the executive said. “But, you know, who’s to say?”
The executive also considers it telling that Natron only had $25 million in contracts, calling this “a drop in the bucket” relative to the potential they see for sodium-ion technology in the grid-scale market. While Natron wasn’t chasing the big bucks associated with this larger market opportunity, other domestic sodium-based battery companies such as Inlyte Energy and Peak Energy are looking to deploy grid-scale systems, as are Chinese battery companies such as BYD and HiNa Battery.
But it’s certainly true that manufacturing this tech in the U.S. won’t be easy. While Chinese companies benefit from state support that can prop up the emergent sodium-ion storage industry whether it’s cost-competitive or not, sodium-ion storage companies in the U.S. will need to go head-to-head with LFP batteries on price if they want to gain significant market share. And while a few years ago experts were predicting a lithium shortage, these days, the price of lithium is about 90% off its record high, making it a struggle for sodium-ion systems to match the cost of lithium-ion.
Sodium-ion chemistry still offers certain advantages that could make it a good option in particular geographies, however. It performs better in low-temperature conditions, where lithium-ion suffers notable performance degradation. And — at least in Natron’s case — it offers superior thermal stability, meaning it’s less likely to catch fire.
Some even argue that sodium-ion can still be a cost-effective option once manufacturing ramps up due to the ubiquity of sodium, plus additional savings throughout the batteries’ useful life. Peak Energy, for example, expects its battery systems to be more expensive upfront but cheaper over their entire lifetime, having designed a passive cooling system that eliminates the need for traditional temperature control components such as pumps and fans.
Ultimately, though, Yao thinks U.S. companies should be considering sodium-ion as a “low-temperature, high-power counterpart” — not a replacement — for LFP batteries. That’s how the Chinese battery giants are approaching it, he said, whereas he thinks the U.S. market remains fixated on framing the two technologies as competitors.
“I think the safe assumption is that China will come to dominate sodium-ion battery production,” Yao told me. “They already are far ahead of us.” But that doesn’t mean it’s impossible to build out a domestic supply chain — or at least that it’s not worth trying. “We need to execute with technologically pragmatic solutions and target beachhead markets capable of tolerating cost premiums before we can play in the big leagues of EVs or [battery energy storage systems],” he said.
And that, he affirmed, is exactly what Natron was trying to do. RIP.
They may not refuel as quickly as gas cars, but it’s getting faster all the time to recharge an electric car.
A family of four pulls their Hyundai Ioniq 5 into a roadside stop, plugs in, and sits down to order some food. By the time it arrives, they realize their EV has added enough charge that they can continue their journey. Instead of eating a leisurely meal, they get their grub to go and jump back in the car.
The message of this ad, which ran incessantly on some of my streaming services this summer, is a telling evolution in how EVs are marketed. The game-changing feature is not power or range, but rather charging speed, which gets the EV driver back on the road quickly rather than forcing them to find new and creative ways to kill time until the battery is ready. Marketing now frequently highlights an electric car’s ability to add a whole lot of miles in just 15 to 20 minutes of charge time.
Charging speed might be a particularly effective selling point for convincing a wary public. EVs are superior to gasoline vehicles in a host of ways, from instantaneous torque to lower fuel costs to energy efficiency. The one thing they can’t match is the pump-and-go pace of petroleum — the way combustion cars can add enough fuel in a minute or two to carry them for hundreds of miles. But as more EVs on the market can charge at faster speeds, even this distinction is beginning to disappear.
In the first years of the EV race, the focus tended to fall on battery range, and for good reason. A decade ago, many models could travel just 125 or 150 miles on a charge. Between the sparseness of early charging infrastructure and the way some EVs underperform their stated range numbers at highway speeds, those models were not useful for anything other than short hauls.
By the time I got my Tesla in 2019, things were better, but still not ideal. My Model 3’s 240 miles of max range, along with the expansion of the brand’s Supercharger network, made it possible to road-trip in the EV. Still, I pushed the battery to its limits as we crossed worryingly long gaps between charging stations in the wide open expanses of the American West. Close calls burned into my mind a hyper-awareness of range, which is why I encourage EV shoppers to pay extra for a bigger battery with additional range if they can afford it. You just had to make it there; how fast the car charged once you arrived was a secondary concern. But these days, we may be reaching a point at which how fast your EV charges is more important than how far it goes on a charge.
For one thing, the charging map is filling up. Even with an anti-EV American government, more chargers are being built all the time. This growth is beginning to eliminate charging deserts in urban areas and cut the number of very long gaps between stations out on the highway. The more of them come online, the less range anxiety EV drivers have about reaching the next plug.
Super-fast charging is a huge lifestyle convenience for people who cannot charge at home, a group that could represent the next big segment of Americans to electrify. Speed was no big deal for the prototypical early adopter who charged in their driveway or garage; the battery recharged slowly overnight to be ready to go in the morning. But for apartment-dwellers who rely on public infrastructure, speed can be the difference between getting a week’s worth of miles in 15 to 20 minutes and sitting around a charging station for the better part of an hour.
Crucially, an improvement in charging speed makes a long EV journey feel more like the driving rhythm of old. No, battery-powered vehicles still can’t get back on the road in five minutes or less. But many of the newer models can travel, say, three hours before needing to charge for a reasonable amount of time — which is about as long as most people would want to drive without a break, anyway.
An impressive burst of technological improvement is making all this possible. Early EVs like the original Chevy Bolt could accept a maximum of around 50 kilowatts of charge, and so that was how much many of the early DC fast charging stations would dispense. By comparison, Tesla in the past few years pushed Supercharger speed to 250 kilowatts, then 325. Third-party charging companies like Electrify America and EVgo have reached 350 kilowatts with some plugs. The result is that lots of current EVs can take on 10 or more miles of driving range per minute under ideal conditions.
It helps, too, that the ranges of EVs have been steadily improving. What those car commercials don’t mention is that the charging rate falls off dramatically after the battery is half full; you might add miles at lightning speed up to 50% of charge, but as it approaches capacity it begins to crawl. If you have a car with 350 miles of range, then, you probably can put on 175 miles in a heartbeat. (Efficiency counts for a lot, too. The more miles per kilowatt-hour your car can get, the farther it can go on 15 minutes of charge.)
Yet here again is an area where the West is falling behind China’s disruptive EV industry. That country has rolled out “megawatt” charging that would fill up half the battery in just four minutes, a pace that would make the difference between a gasoline pit stop and a charging stop feel negligible. This level of innovation isn’t coming to America anytime soon. But with automakers and charging companies focused on getting faster, the gap between electric and gas will continue to close.
On the need for geoengineering, Britain’s retreat, and Biden’s energy chief
Current conditions: Hurricane Gabrielle has strengthened into a Category 4 storm in the Atlantic, bringing hurricane conditions to the Azores before losing wind intensity over Europe • Heavy rains are whipping the eastern U.S. • Typhoon Ragasa downed more than 10,000 trees in Yangjiang, in southern China, before moving on toward Vietnam.
The White House Office of Management and Budget directed federal agencies to prepare to reduce personnel during a potential government shutdown, targeting employees who work for programs that are not legally required to continue, Politico reported Wednesday, citing a memo from the agency.
As Heatmap’s Jeva Lange warned in May, the Trump administration’s cuts to the federal civil service mean “it may never be the same again,” which could have serious consequences for the government’s response to an unpredictable disaster such as a tsunami. Already the administration has hollowed out entire teams, such as the one in charge of carbon removal policy, as our colleague Katie Brigham wrote in February, shortly after the president took office. And Latitude Media reported on Wednesday, the Department of Energy has issued a $50 million request for proposals from outside counsel to help with the day-to-day work of the agency.
At the Heatmap House event at New York Climate Week on Wednesday, Senate Minority Leader Chuck Schumer kicked things off by calling out President Donald Trump’s efforts to “kill solar, wind, batteries, EVs and all climate friendly technologies while propping up fossil fuels, Big Oil, and polluting technologies that hurt our communities and our growth.” The born and raised Brooklynite praised his home state. “New York remains the climate leader,” he said, but warned that the current administration was pushing to roll back the progress the state had made.
Yet as Heatmap’s Charu Sinha wrote in her recap of the event, “many of the panelists remained cautiously optimistic about the future of decarbonization in the U.S.” Climate tech investors Tom Steyer and Dawn Lippert charted a path forward for decarbonization technology even in an antagonistic political environment, while PG&E’s Carla Peterman made a case for how data centers could eventually lower energy costs. You can read about all these talks and more here.
Nearly 100 scientists, including President Joe Biden’s chief climate science adviser, signed onto a letter Wednesday endorsing more federal research into geoengineering, the broad category of technologies to mitigate the effects of climate change that includes the controversial proposal to inject sulfur dioxide into the atmosphere to reflect the sun’s heat back into space. In an open letter, the researchers said “it is very unlikely that current” climate goals “will keep the global mean temperature below the Paris Agreement target” of 1.5 degrees Celsius above pre-industrial averages. The world has already warmed by more than 1 degree Celsius.
Earlier this month, a paper in the peer-reviewed journal Frontiers argued against even researching technologies that could temporarily cool the planet while humanity worked to cut planet-heating emissions. But Phil Duffy, Biden’s former climate adviser, said in a statement to Heatmap that the paper “opposes research … that might help protect or restore the polar regions.” He went on via email, “As the climate crisis accelerates, we all agree that we need to rapidly scale up mitigation efforts. But the stakes are too high not to also investigate other possible solutions.”
President Trump and Prime Minister Keir Starmer. Leon Neal/Getty Images
UK Prime Minister Keir Starmer plans to skip the United Nations annual climate summit in Brazil in November, the Financial Times reported on Wednesday. He will do so despite criticizing his predecessor Rishi Sunak a few years ago for a “failure of leadership” after the conservative leader declined to attend the annual confab. One leader in the ruling Labour party said there was a “big fight inside the government” between officials pushing Starmer to attend the event those “wanting him to focus on domestic issues.”
Polls show approval for Starmer among the lowest of any leaders in the West. But he has recently pushed for more clean energy, including signing onto a series of nuclear power deals with the U.S.
The Tennessee Valley Authority has assumed the role of the nation’s testbed for new nuclear fission technologies, agreeing to build what are likely to be the nation’s first small modular reactors, including the debut fourth-generation units that use a coolant other than water. Now the federally-owned utility is getting into fusion. On Wednesday, the TVA inked a deal with fusion startup Type One Energy to develop a 350-megawatt plant “using the company’s stellarator fusion technology.” The deal, first brokered last week but reported Tuesday in World Nuclear News, promises to deploy the technology “once it is commercially ready.” It also follows the announcement just a few days ago of a major offtake agreement for fusion leader Commonwealth Fusion Systems, which will sell $1 billion of electricity to oil giant Eni.
Climate change is good news for foreign fish. A new study in Nature found that warming rivers have brought about the introduction of new invasive species. This, the researchers wrote, shows “an increase in biodiversity associated with improvement of water in many European rivers since the late twentieth century.”