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Americans have succumbed to the myth of dams, argues the author of a new book advocating for their removal.
There are over 91,000 dams in the United States — so many that if you put them all on a map and zoom out, it looks a little like a coverage map for a halfway decent phone network. Most of these dams exist for purposes of flood control and irrigation; a mere 3%, mostly clustered in the West, are used for hydropower. These projects account for over 30% of renewable energy generation in the U.S., which is actually on the smaller side by global standards. Around the world, it’s over 53%.
As the U.S. begins to heave itself toward decarbonization, though, hydropower “pretty much has to be a part” of the solution, many policymakers, scientists, and activists say — particularly because they can run when other sources of renewable energy can’t, like when the wind isn't blowing and the sun isn't shining. Currently, there is a major push to retrofit non-powered dams to produce electricity.
A contingent of activists, however, say we actually need to go in the opposite direction — and tear down the dams. Writer and filmmaker Steven Hawley argues in his new book Cracked: The Future of Dams in a Hot, Chaotic World (out this week from Patagonia Books, the mission-focused publishing arm of the outdoor apparel company) that Americans have been suckered into believing in the century-old “mythology” of dams.
The reality of hydropower emissions is surprisingly complicated and understudied. Recent research suggests there are huge discrepancies between the carbon footprints of different hydropower plants. Some have negative emissions, as Grist wrote in 2019, but others are little better than fossil fuel sources. It’s all in their location and the way they’re built and operated.
Hawley and I spoke on Wednesday about the drawbacks of dams, the historically corrupt allotment of water in the West, and the future of the environmental movement. A transcription of our conversation, edited and condensed for length and clarity, is below.
When I was a kid, my family took road trips to Grand Coulee and Hoover dams, where we oohed and ahhed over them as engineering marvels that make life in the West possible. In your book, you call this part of the “gospel” and “mythology” of dams. Can you tell me a little more about the power these stories still hold over us?
In the post-World War II environment, we were sold this story about how building large water control projects in arid desert basins all over the West would make modern civilization possible and even desirable. We embarked on a dam-building frenzy — not only in the flagship projects in the American West but all over the country. I think there was something like 90,000 dams built from 1930 to 1980 in the United States. The idea was that you could exercise a control over nature that would allow us to furnish a rising tide that would lift all boats. That’s proven to not be true. The flood that came as a result of the dams lifted a few people’s boats, but not everyone’s. There are still, for instance, in the migrant worker community, an alarming number of underpaid and poor people.
The second part of the story, particularly with the climate chaos that is facing us in our future, is that dams are a really inefficient and horrible way to store water because we lose so much water through evaporation. Estimates have doubled: It used to be the standard cost of evaporation out of the reservoir behind any dam was 10%. Now they’re saying, okay, maybe it’s closer to 20%. It’s only going to increase with the increase in temperatures. You can’t justify that in an era where water is scarce; losing that much of the volume of a reservoir to make clouds wasn’t the intent of those projects. The intent was to furnish water for people and places that need it and if you’re losing 20% a year, and there are years where there’s low or no precipitation as we’ve seen in the Colorado basin, you’re not going to have a reservoir.
The last part that’s blown up the mythology of dams is that dams are major producers of greenhouse gases. The sixth largest producer of methane on the planet is the world’s reservoirs. And we know that methane in the short term is a much more serious problem than CO2. You can’t have the world’s reservoirs emitting methane on the same level as the country of Germany and tell me that dams are providing clean, green energy or clean, green water storage for places that need it. It’s just not true. The science on that has evolved rather quickly. It’s widely accepted even by the federal agencies, the Bureau of Reclamation and the Army Corps of Engineers, that all reservoirs produce methane.
The Elwha River dam removal, pictured here in 2014, is the largest dam removal in U.S. history.John Gussman/'Cracked' (Patagonia Books). Used with permission.
I had a question about that! Prominent environmentalists are calling for a green building boom, stressing that, despite the drawbacks of some renewable technologies, the most important thing is for us to transition away from fossil fuels as quickly as possible. The Inflation Reduction Act offers a tax credit for the production of electricity from hydropower, and the Energy Department has announced $200 million for the modernization and expansion of hydroelectric power, calling it an important step toward President Biden’s goal of 100% clean electricity by 2035. In your opinion, can dams have a place in the energy transition?
Well, they can but they shouldn’t. We’re still subsidizing the fossil fuel industry, and the fact that these kinds of provisions make their way into energy bills should tell us more about the power of lobbying than it does about any kind of safe or sane or sound policy decisions. We know the science, we know that hydropower is not clean green energy, in addition to the destruction of salmon runs and ecological destruction of habitat.
[Dams] produce methane and we can’t have energy sources that are producing significant quantities of methane. So we should be looking at a serious cost-benefit analysis and ecological environmental analysis of every large dam project and start planning for getting rid of the ones that aren’t penciling out. Is there a variance in the amount of methane that each project produces? I don’t know, I’m not adept enough at the science to say what’s acceptable and what’s not. But some reservoirs — as one of the early researchers in this field pointed out, in terms of a CO2-equivalent greenhouse gas footprint — they’re on par with a large coal-fired plant.
In Cracked, you tell the story of Project 5311, a tribe-led effort to create a virtual power plant — that is, a network of decentralized renewable energy generators, like homeowner’s solar panels, batteries, or even EVs, that pool together to create a flexible electricity grid — as a way to offset and justify removing four Snake River dams. Could this be a model course of action on other rivers?
This is an exciting new frontier in the West for the utility industry. It does a number of things for indigenous communities. It gives them another revenue stream — here in the Pacific Northwest, the main revenue stream for a lot of Indian nations is the casino, and so becoming a player in the energy business diversifies their economy. We’ve seen this happen on the Nez Perce reservation already.
What would be really cool is if we could get key legislators in state houses to start supporting the ambitions of the Nez Perce. They can see, as most of the rest of us can, that we need to wean ourselves off fossil fuels. If the kind of environment that allowed humans to flourish over the past 200,000 years is going to continue, we’re gonna have to change the way that we do things. And I think Indigenous communities are seeing that they can be a part of that change. In the case of the Nez Perce, they can see that they can have their salmon-bearing rivers back, a key part of not only their economy but their religion and their society as well.
The bathrub ring in Reservoir Powell.Justin Sullivan/'Cracked' (Patagonia Books). Used with permission.
In addition to being part manifesto, part how-to guide, and part travelogue, Cracked is also a history of water usage in the West. But I’m also curious about your history — how did you become a dam buster?
My best friend in high school growing up was a massive fly-fishing nerd. He baptized me into that world and I started fishing and paying attention to what was going on on rivers. The second part of that story is, I had a friend who was kind of a fast talker, and he talked his way into being the editor of a fishing magazine and he called me up and said, “I don’t know the first thing about this subject. I’ll let you freelance all you want to.” And so I took that job and started writing about river issues.
What really sold me on dam removal was, at the time, there was a group of commercial fishermen that were starting to pay really close attention to what was happening in the streams that produce a lot of the fish that they catch. Any salmon species ultimately has to spend some time in freshwater, of course. And [the fishermen] were actually lobbying in state houses and legislatures and in Congress. Some that were out of work, they were actually doing stream restoration and a lot of them found that work really satisfying. And a lot of them learned that the main reason why they were suffering economically is because of dams that were cutting off their supply of fish. And I thought that was a pretty fascinating story. You don’t normally think of commercial fishermen as environmentalists, or at least you didn’t back then. But that’s what sold me, that series of events.
Many people are familiar with the idea that dams disrupt river ecosystems, but you write also that “an aggression against a wild river is ultimately an aggression against people.” I was surprised to learn that historically dams have been pitched to constituents as an equalizer when you argue they mostly benefit people with power.
Yeah, absolutely. There’s a section in the book about how the supposedly egalitarian work of the Central Valley Project in California instead goes to some already very wealthy farmers. What should really raise the ire of a lot of readers who care about clean water and rivers is just the way that the agricultural lobby, particularly in the state of California, has made water “flow uphill toward money.”
There was a deal that the Westlands Water District cut to basically take ownership of $3 billion worth of federal infrastructure and they also had their water rights guaranteed. So in years where the rest of Californians might be worried about, you know, whether they’re gonna have enough water to put a garden out, or even, you know, God forbid, in the future, take a shower. But Westlands will get their water no matter what. And that’s really corrupt. They’re not forced to take part in any kind of cutbacks the way the rest of us are. And that’s wrong.
Hoover Dam.The Carol M. Highsmith Archive, Library of Congress, Prints and Photographs Division/'Cracked' (Patagonia Books). Used with permission.
Do you have any parting words for readers who are making up their minds about these complicated trade-offs?
I think we’ve reached a crossroads in the environmental moment with a number of crises — the extinction crisis, the climate change crisis coming out as full bore. It’s a perfectly human response to be overwhelmed by that.
I was impressed with a couple of people that I interviewed who beseech the environmental community to get back to making arguments based on what is beautiful, what is aesthetically pleasing, and what is right for future generations. I think that’s really what the Remove the Dams movement is all about, is putting the environmental movement back on the side of what is — well, as I quoted Martin Litton at the head of one chapter, “don’t ask for what is reasonable, ask for what is right.”
We should be arguing not over what is, but what ought to be.
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On a late-night House vote, Tesla’s slump, and carbon credits
Current conditions: Tropical storm Chantal has a 40% chance of developing this weekend and may threaten Florida, Georgia, and the Carolinas • French far-right leader Marine Le Pen is campaigning on a “grand plan for air conditioning” amid the ongoing record-breaking heatwave in Europe • Great fireworks-watching weather is in store tomorrow for much of the East and West Coasts.
The House moved closer to a final vote on President Trump’s “big, beautiful bill” after passing a key procedural vote around 3 a.m. ET on Thursday morning. “We have the votes,” House Speaker Mike Johnson told reporters after the rule vote, adding, “We’re still going to meet” Trump’s self-imposed July 4 deadline to pass the megabill. A floor vote on the legislation is expected as soon as Thursday morning.
GOP leadership had worked through the evening to convince holdouts, with my colleagues Katie Brigham and Jael Holzman reporting last night that House Freedom Caucus member Ralph Norman of North Carolina said he planned to advance the legislation after receiving assurances that Trump would “deal” with the Inflation Reduction Act’s clean energy tax credits, particularly for wind and solar energy projects, which the Senate version phases out more slowly than House Republicans wanted. “It’s not entirely clear what the president could do to unilaterally ‘deal with’ tax credits already codified into law,” Brigham and Holzman write, although another Republican holdout, Representative Chip Roy of Texas, made similar allusions to reporters on Wednesday.
Tesla delivered just 384,122 cars in the second quarter of 2025, a 13.5% slump from the 444,000 delivered in the same quarter of 2024, marking the worst quarterly decline in the company’s history, Barron’s reports. The slump follows a similarly disappointing Q1, down 13% year-over-year, after the company’s sales had “flatlined for the first time in over a decade” in 2024, InsideEVs adds.
Despite the drop, Tesla stock rose 5% on Wednesday, with Wedbush analyst Dan Ives calling the Q2 results better than some had expected. “Fireworks came early for Tesla,” he wrote, although Barron’s notes that “estimates for the second quarter of 2025 started at about 500,000 vehicles. They started to drop precipitously after first-quarter deliveries fell 13% year over year, missing Wall Street estimates by some 40,000 vehicles.”
The European Commission proposed its 2040 climate target on Wednesday, which, for the first time, would allow some countries to use carbon credits to meet their emissions goals. EU Commissioner for Climate, Net Zero, and Clean Growth Wopke Hoekstra defended the decision during an appearance on Euronews on Wednesday, saying the plan — which allows developing nations to meet a limited portion of their emissions goals with the credits — was a chance to “build bridges” with countries in Africa and Latin America. “The planet doesn’t care about where we take emissions out of the air,” he separately told The Guardian. “You need to take action everywhere.” Green groups, which are critical of the use of carbon credits, slammed the proposal, which “if agreed [to] by member states and passed by the EU parliament … is then supposed to be translated into an international target,” The Guardian writes.
Around half of oil executives say they expect to drill fewer wells in 2025 than they’d planned for at the start of the year, according to a Federal Reserve Bank of Dallas survey. Of the respondents at firms producing more than 10,000 barrels a day, 42% said they expected a “significant decrease in the number of wells drilled,” Bloomberg adds. The survey further indicates that Republican policy has been at odds with President Trump’s “drill, baby, drill” rhetoric, as tariffs have increased the cost of completing a new well by more than 4%. “It’s hard to imagine how much worse policies and D.C. rhetoric could have been for U.S. E&P companies,” one anonymous executive said in the report. “We were promised by the administration a better environment for producers, but were delivered a world that has benefited OPEC to the detriment of our domestic industry.”
Fine-particulate air pollution is strongly associated with lung cancer-causing DNA mutations that are more traditionally linked to smoking tobacco, a new study by researchers at the University of California, San Diego, and the National Cancer Institute has found. The researchers looked at the genetic code of 871 non-smokers’ lung tumors in 28 regions across Europe, Africa, and Asia and found that higher levels of local air pollution correlated with more cancer-driving mutations in the respective tumors.
Surprisingly, the researchers did not find a similar genetic correlation among non-smokers exposed to secondhand smoke. George Thurston, a professor of medicine and population health at New York University, told Inside Climate News that a potential reason for this result is that fine-particulate air pollution — which is emitted by cars, industrial activities, and wildfires — is more widespread than exposure to secondhand smoke. “We are engulfed in fossil-fuel-burning pollution every single day of our lives, all day long, night and day,” he said, adding, “I feel like I’m in the Matrix, and I’m the only one that took the red pill. I know what’s going on, and everybody else is walking around thinking, ‘This stuff isn’t bad for your health.’” Today, non-smokers account for up to 25% of lung cancer cases globally, with the worst air quality pollution in the United States primarily concentrated in the Southwest.
EPA
National TV news networks aired a combined 4 hours and 20 minutes of coverage about the record-breaking late-June temperatures in the Midwest and East Coast — but only 4% of those segments mentioned the heat dome’s connection to climate change, a new report by Media Matters found.
“We had enough assurance that the president was going to deal with them.”
A member of the House Freedom Caucus said Wednesday that he voted to advance President Trump’s “big, beautiful bill” after receiving assurances that Trump would “deal” with the Inflation Reduction Act’s clean energy tax credits – raising the specter that Trump could try to go further than the megabill to stop usage of the credits.
Representative Ralph Norman, a Republican of North Carolina, said that while IRA tax credits were once a sticking point for him, after meeting with Trump “we had enough assurance that the president was going to deal with them in his own way,” he told Eric Garcia, the Washington bureau chief of The Independent. Norman specifically cited tax credits for wind and solar energy projects, which the Senate version would phase out more slowly than House Republicans had wanted.
It’s not entirely clear what the president could do to unilaterally “deal with” tax credits already codified into law. Norman declined to answer direct questions from reporters about whether GOP holdouts like himself were seeking an executive order on the matter. But another Republican holdout on the bill, Representative Chip Roy of Texas, told reporters Wednesday that his vote was also conditional on blocking IRA “subsidies.”
“If the subsidies will flow, we’re not gonna be able to get there. If the subsidies are not gonna flow, then there might be a path," he said, according to Jake Sherman of Punchbowl News.
As of publication, Roy has still not voted on the rule that would allow the bill to proceed to the floor — one of only eight Republicans yet to formally weigh in. House Speaker Mike Johnson says he’ll, “keep the vote open for as long as it takes,” as President Trump aims to sign the giant tax package by the July 4th holiday. Norman voted to let the bill proceed to debate, and will reportedly now vote yes on it too.
Earlier Wednesday, Norman said he was “getting a handle on” whether his various misgivings could be handled by Trump via executive orders or through promises of future legislation. According to CNN, the congressman later said, “We got clarification on what’s going to be enforced. We got clarification on how the IRAs were going to be dealt with. We got clarification on the tax cuts — and still we’ll be meeting tomorrow on the specifics of it.”
Neither Norman nor Roy’s press offices responded to a request for comment.
The foreign entities of concern rules in the One Big Beautiful Bill would place gigantic new burdens on developers.
Trump campaigned on cutting red tape for energy development. At the start of his second term, he signed an executive order titled, “Unleashing Prosperity Through Deregulation,” promising to kill 10 regulations for each new one he enacted.
The order deems federal regulations an “ever-expanding morass” that “imposes massive costs on the lives of millions of Americans, creates a substantial restraint on our economic growth and ability to build and innovate, and hampers our global competitiveness.” It goes on to say that these regulations “are often difficult for the average person or business to understand,” that they are so complicated that they ultimately increase the cost of compliance, as well as the risks of non-compliance.
Reading this now, the passage echoes the comments I’ve heard from industry groups and tax law experts describing the incredibly complex foreign entities of concern rules that Congress — with the full-throated backing of the Trump administration — is about to impose on clean energy projects and manufacturers. Under the One Big Beautiful Bill Act, wind and solar, as well as utility-scale energy storage, geothermal, nuclear, and all kinds of manufacturing projects will have to abide by restrictions on their Chinese material inputs and contractual or financial ties with Chinese entities in order to qualify for tax credits.
“Foreign entity of concern” is a U.S. government term referring to entities that are “owned by, controlled by, or subject to the jurisdiction or direction of” any of four countries — Russia, Iran, North Korea, and most importantly for clean energy technology, China.
Trump’s tax bill requires companies to meet increasingly strict limits on the amount of material from China they use in their projects and products. A battery factory starting production next year, for example, would have to ensure that 60% of the value of the materials that make up its products have no connection to China. By 2030, the threshold would rise to 85%. The bill lays out similar benchmarks and timelines for clean electricity projects, as well as other kinds of manufacturing.
But how companies should calculate these percentages is not self-evident. The bill also forbids companies from collecting the tax credits if they have business relationships with “specified foreign entities” or “foreign-influenced entities,” terms with complicated definitions that will likely require guidance from the Treasury for companies to be sure they pass the test.
Regulatory uncertainty could stifle development until further guidance is released, but how long that takes will depend on if and when the Trump administration prioritizes getting it done. The One Big Beautiful Bill Act contains a lot of other new tax-related provisions that were central to the Trump campaign, including a tax exemption for tips, which are likely much higher on the department’s to-do list.
Tax credit implementation was a top priority for the Biden administration, and even with much higher staffing levels than the department currently has, it took the Treasury 18 months to publish initial guidance on foreign entities of concern rules for the Inflation Reduction Act’s electric vehicle tax credit. “These things are so unbelievably complicated,” Rachel McCleery, a former senior advisor at the Treasury under Biden, told me.
McCleery questioned whether larger, publicly-owned companies would be able to proceed with major investments in things like battery manufacturing plants until that guidance is out. She gave the example of a company planning to pump out 100,000 batteries per year and claim the per-kilowatt-hour advanced manufacturing tax credit. “That’s going to look like a pretty big number in claims, so you have to be able to confidently and assuredly tell your shareholder, Yep, we’re good, we qualify, and that requires a certification” by a tax counsel, she said. To McCleery, there’s an open question as to whether any tax counsel “would even provide a tax opinion for publicly-traded companies to claim credits of this size without guidance.”
John Cornwell, the director of policy at the Good Energy Collective, which conducts research and advocacy for nuclear power, echoed McCleery’s concerns. “Without very clear guidelines from the Treasury and IRS, until those guidelines are in place, that is going to restrict financing and investment,” Cornwell told me.
Understanding what the law requires will be the first challenge. But following it will involve tracking down supply chain data that may not exist, finding alternative suppliers that may not be able to fill the demand, and establishing extensive documentation of the origins of components sourced through webs of suppliers, sub-suppliers, and materials processors.
The Good Energy Collective put out an issue brief this week describing the myriad hurdles nuclear developers will face in trying to adhere to the tax credit rules. Nuclear plants contain thousands of components, and documenting the origin of everything from “steam generators to smaller items like specialized fasteners, gaskets, and electronic components will introduce substantial and costly administrative burdens,” it says. Additionally the critical minerals used in nuclear projects “often pass through multiple processing stages across different countries before final assembly,” and there are no established industry standards for supply chain documentation.
Beyond the documentation headache, even just finding the materials could be an issue. China dominates the market for specialized nuclear-grade materials manufacturing and precision component fabrication, the report says, and alternative suppliers are likely to charge premiums. Establishing new supply chains will take years, but Trump’s bill will begin enforcing the sourcing rules in 2026. The rules will prove even more difficult for companies trying to build first-of-a-kind advanced nuclear projects, as those rely on more highly specialized supply chains dominated by China.
These challenges may be surmountable, but that will depend, again, on what the Treasury decides, and when. The Department’s guidance could limit the types of components companies have to account for and simplify the documentation process, or it could not. But while companies wait for certainty, they may also be racking up interest. “The longer there are delays, that can have a substantial risk of project success,” Cornwell said.
And companies don’t have forever. Each of the credits comes with a phase-out schedule. Wind manufacturers can only claim the credits until 2028. Other manufacturers have until 2030. Credits for clean power projects will start to phase down in 2034. “Given the fact that a lot of these credits start lapsing in the next few years, there’s a very good chance that, because guidance has not yet come out, you’re actually looking at a much smaller time frame than than what is listed in the bill,” Skip Estes, the government affairs director for Securing America’s Energy Future, or SAFE, told me.
Another issue SAFE has raised is that the way these rules are set up, the foreign sourcing requirements will get more expensive and difficult to comply with as the value of the tax credits goes down. “Our concern is that that’s going to encourage companies to forego the credit altogether and just continue buying from the lowest common denominator, which is typically a Chinese state-owned or -influenced monopoly,” Estes said.
McCleery had another prediction — the regulations will be so burdensome that companies will simply set up shop elsewhere. “I think every industry will certainly be rethinking their future U.S. investments, right? They’ll go overseas, they’ll go to Canada, which dumped a ton of carrots and sticks into industry after we passed the IRA,” she said.
“The irony is that Republicans have historically been the party of deregulation, creating business friendly environments. This is completely opposite, right?”