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Struggling developers will likely be able to write off subsea cables, as a treat.
The beleaguered offshore wind industry got a small boost from the Biden administration on Friday in the form of a proposal that would expand the definition of what qualifies for a 30% clean energy investment tax credit.
Offshore wind farms have many different components beyond just the turbines, and developers have been seeking clarity on where the dividing line was between the equipment that would qualify for the tax credit, and any interdependent infrastructure like transformers and transmission lines. Under the new rules, developers would be able to include the cost of subsea cables that bring the power to shore, as well as onshore substations — not just the towers and blades or the platforms they sit on.
The proposal is part of the Treasury’s ongoing role in overseeing a range of expanded tax credits for clean energy that were in the Inflation Reduction Act. It provides similar clarity for a new tax credit for standalone, utility-scale energy storage projects, which can store power from wind and solar farms and dispatch it when needed.
“Given the new and expanded incentives created by the Inflation Reduction Act, clarity around the underlying rules for long-standing investment credits is critical as projects move from the announcement, to groundbreaking, and eventual ribbon-cutting stage,” said Wally Adeyomo, deputy secretary of the Treasury, during a call with reporters on Thursday.
John Podesta, senior advisor to Biden for clean energy innovation and implementation, who was also on the call, said that developers were hearing from their lenders that they were waiting to see the final tax credit guidance, particularly in regard to underwater cabling. Offshore wind projects have been plagued by rising costs due to inflation, supply chain disruptions, and rising interest rates. Many have asked the future buyers of their power to approve higher rates, and two projects in New Jersey were recently canceled altogether.
In July, a utility in Rhode Island decided not to move forward on a contract to buy power from a proposed offshore wind farm called Revolution II, a joint venture between Orsted and Eversource, putting the project in limbo. In a press release, the utility pointed to “uncertainty of federal tax credits” as one of the factors that likely contributed to the higher-than-expected proposed contract.
Adeyomo said the clarity provided by the tax credit rules will “allow these offshore wind companies to price their offerings going forward with the certainty to know what types of incentives they will receive from the government.”
“We appreciate the clarification from the Treasury Department that recognizes the integral nature of all components of an offshore wind project,” a spokesperson for Orsted told me.
Considering the broader economic headwinds these projects face, this expansion of the tax credit eligibility is unlikely to be enough to put the ailing industry on solid ground. Offshore wind developers are also still waiting for clarity on another Inflation Reduction Act program that could prove essential — the energy community bonus credit. The subsidy gives projects an additional 10% tax credit if they build in communities that have been host to fossil fuel plants or extractive activities. It will apply to the location of onshore substations, but developers want to see it also apply to port infrastructure.
Clean energy trade groups welcomed the proposal on Friday.
“Thanks to the IRA, clean energy businesses now have access to a stable tax platform like the one enjoyed by the fossil fuel sector for more than a century,” said Gregory Wetstone, President and CEO of the American Council on Renewable Energy in a statement. “But to fully take advantage of these benefits, they need to understand how the provisions work. The tax guidance released today provides important clarity to developers and investors looking to further America’s energy transition.”
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The trash mostly stays put, but the methane is another story.
In the coming days and weeks, as Floridians and others in storm-ravaged communities clean up from Hurricane Milton, trucks will carry all manner of storm-related detritus — chunks of buildings, fences, furniture, even cars — to the same place all their other waste goes: the local landfill. But what about the landfill itself? Does this gigantic trash pile take to the air and scatter Dorito bags and car parts alike around the surrounding region?
No, thankfully. As Richard Meyers, the director of land management services at the Solid Waste Authority of Palm Beach County, assured me, all landfill waste is covered with soil on “at least a weekly basis,” and certainly right before a hurricane, preventing the waste from being kicked up. “Aerodynamically, [the storm is] rolling over that covered waste. It’s not able to blow six inches of cover soil from the top of the waste.”
But just because a landfill won’t turn into a mass of airborne dirt and half-decomposed projectiles doesn’t mean there’s nothing to worry about. Because landfills — especially large ones — often contain more advanced infrastructure such as gas collection systems, which prevent methane from being vented into the atmosphere, and drainage systems, which collect contaminated liquid that’s pooled at the bottom of the waste pile and send it off for treatment. Meyers told me that getting these systems back online after a storm if they’ve been damaged is “the most critical part, from our standpoint.”
A flood-inundated gas collection system can mean more methane escaping into the air, and storm-damaged drainage pipes can lead to waste liquids leaking into the ground and potentially polluting water sources. The latter was a major concern in Puerto Rico after Hurricane Maria destroyed a landfill’s waste liquid collection system in the Municipality of Juncos in 2017.
As for methane, calculating exactly how much could be released as a result of a dysfunctional landfill gas collection system requires accounting for myriad factors such as the composition of the waste and the climate that it’s in, but the back of the envelope calculations don’t look promising. The Southeast County Landfill near Tampa, for instance, emitted about 100,000 metric tons of CO2 equivalent in 2022, according to the Environmental Protection Agency (although a Harvard engineering study from earlier this year suggests that this may be a significant underestimate). The EPA estimates that gas collection systems are about 75% effective, which means that the landfill generates a total of about 400,000 metric tons of CO2-worth of methane. If Southeast County Landfill’s gas collection system were to go down completely for even a day, that would mean extra methane emissions of roughly 822 metric tons of CO2 equivalent. That difference amounts to the daily emissions of more than 65,000 cars.
That’s a lot of math. But the takeaway is: Big landfills in the pathway of a destructive storm could end up spewing a lot of methane into the atmosphere. And keep in mind that these numbers are just for one hypothetical landfill with a gas collection system that goes down for one day. The emissions numbers, you can imagine, start to look much worse if you consider the possibility that floodwaters could impede access to infrastructure for even longer.
So stay strong out there, landfills of Florida. You may not be the star of this show, but you’ve got our attention.
And made Helene so much worse, according to new reports from Climate Central and World Weather Attribution.
Contrary to recent rumor, the U.S. government cannot direct major hurricanes like Helene and Milton toward red states. According to two new rapid attribution studies by World Weather Attribution and Climate Central, however, human actors almost certainly made the storms a lot worse through the burning of fossil fuels.
A storm like Hurricane Helene, which has killed at least 227 people so far and caused close to $50 billion in estimated property losses across the southeast, is about two-and-a-half times more likely in the region today compared to what would be expected in a “cooler pre-industrial climate,” WWA found. That means Helene, the kind of storm one would expect to see once every 130 years on average, is now expected to develop at a rate of about once every 53 years. Additionally, WWA researchers determined that extreme rainfall from Helene was 70% more likely and 10% heavier in the Appalachians and about 40% more likely in the southern Appalachian region, where many of the deaths occurred, due to climate change.
“Americans shouldn’t have to fear hurricanes more violent than Helene — we have all the knowledge and technology needed to lower demand and replace oil, gas, and coal with renewable energy,” Friederike Otto, the lead of WWA and a senior lecturer in climate science at Imperial College London, said in a statement. “But vitally, we need the political will.” Alarmingly, the attribution study found that storms could drop an additional 10% or more rain on average as soon as the 2050s if warming reaches 2 degrees Celsius.
WWA’s study is not the first to be released on Hurricane Helene, but it was still produced incredibly quickly and has not been peer reviewed. Just a few weeks ago, the group issued a correction on a report estimating the contribution of climate change to recent flooding in Europe.
Separately, Climate Central looked at Hurricane Milton, which already has the distinction of being the fifth strongest Atlantic storm on record. The nonprofit’s findings show that Milton’s rapid intensification — one of the fastest and most powerful instances of the phenomenon in history — is primarily due to high sea surface temperatures in the weeks before Milton developed, which was made at least 400 times more likely by climate change and up to 800 times more likely. (WWA relied on Climate Central’s Climate Shift Index for oceans for its research, but found “climate change made the unusually hot sea surface temperature about 200-500 times more likely.”)
Attribution science is incredibly tricky, especially for a storm system like a hurricane that has variables ranging from wind shear to the El Niño–Southern Oscillation to ocean temperatures and jet stream variations. When I spoke to a member of the WWA team earlier this year, I was told the organization specifically avoids attributing the intensification of any individual hurricane — in theory, one of the more straightforward relationships — to climate change because of the relatively limited historical modeling available. Even something like rainfall “is not necessarily correlated to the magnitude of the floods that you see because there are other factors,” WWA’s Clair Barnes previously told me — for example, the steep-sided mountains and hollows of western North Carolina, which served as funnels for rainfall to an especially devastating effect.
But regarding the relationship between hurricanes and climate change more generally, “We’re relatively confident that storms will get more intense” in a warming world, Gabriel Vecchi, a Princeton geoscientist, explained on a recent episode of Heatmap’s Shift Key podcast. “And we’re really confident that storms will get wetter.”
Helene and Milton hammer that point home: once-in-a-generation storms can now arrive on back-to-back weekends. You can almost understand the impulse to devise a zany explanation as to why. Only, the truth is far simpler than cloud seeding or space lasers: a warmer atmosphere makes for warmer oceans, which make for wetter, more intense storms. And while hurricane seasons eventually end, global temperatures haven’t stopped going up. That, perhaps, is the more terrifying subtext of the attribution studies: There will be more Miltons and Helenes.
We didn’t have to wait long for climate to come up during tonight’s vice presidential debate between VP hopefuls Republican JD Vance and Democrat Tim Walz — the night’s second question was about the devastation caused by Hurricane Helene and fueled by warmer air and waters due to climate pollution.
Vance started off his answer innocuously enough, extending his thoughts and prayers to those affected by the hurricane and then proceeding to some campaign boilerplate. “I think it’s important for us, first of all, to say Donald Trump and I support clean air and clean water,” Vance said up top, echoing Trump’s claim that he wants “absolutely immaculate clean water and … absolutely clean air,” from the presidential debate back in June. (It’s worth noting, of course, that his policy choices tell a different story.)
Vance then proceeded to hedge the climate change question in a way that wound up backing him right into it. “One of the things that I've noticed some of our Democratic friends talking a lot about is a concern about carbon emissions, this idea that carbon emissions drives all of the climate change,” Vance said. “Well, let’s just say that's true — just for the sake of argument, so we’re not arguing about weird science. Let’s just say that’s true.”
He then went on to describe an America-first all-of-the-above energy and manufacturing policy that sounded more than a little familiar.