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The end may be in sight, but it’s not here yet.
Are interest rates going to go down? The market will have to wait.
Following a Tuesday report showing steady consumer prices in May and prices overall only rising 3.3% in the past year, the Federal Reserve held steady on interest rates, releasing a projection Wednesday showing just one rate cut this year.
If rates do indeed fall this year (or next, when the Fed is projecting four cuts), that would be a big relief to renewable developers. There’s been an unprecedented flow of money into the sector in the past few years — whether from tax credits from the Inflation Reduction Act or power purchase agreements from utilities and corporations that want to decarbonize, you name it — but it’s come at the same time as projects have gotten more expensive to undertake. That’s in terms of labor and supplies, but also the most important part of any project: money.
“In the near term, investors are looking for market rates to fall to reduce financing costs — the Fed cutting the base rate could greatly help this along,” Srinivasan Santhakumar, senior research analyst at Wood Mackenzie, told me in an email.
Interest rates don’t affect every project equally. Renewables tend to be capital intensive, meaning that a higher portion of their costs are in building them as opposed to operating them. For an offshore wind turbine project, almost 70% of the expenditure comes from capital, whereas with a combined-cycle natural gas turbine plant it’s less than 20%, according to Wood Mackenzie data.
That’s because, in the case of wind and solar, the “fuel” is free, unlike with natural gas and other fossil-based energy sources. This means that developers have to fund more of the project upfront with borrowed money, which means a bigger hit from higher interest rates. According to an analysis by the investment bank Lazard, when the cost of debt is 5%, the levelized cost of an offshore wind project is $88 per megawatt-hour; when the cost of debt rises to 8%, the levelized cost rises to $118. For a combined cycle gas plant, the levelized cost per megawatt-hour rises from $66 to just $76.
“You’re really sensitive to interest rates” as a renewable developer, as Tim Latimer, the chief executive officer of the geothermal startup Fervo, explained to me. “That’s a big investment up front.”
In some sense, renewables economics have been a victim of their own success, Latimer said. Because there are lots of buyers for 15 years’ worth of renewable electricity and no risk of fuel costs surging or falling dramatically, the “spread” that renewable projects demand over risk-free rates is much smaller than for natural gas projects. But that means as rates rise, the spread shrinks more with renewables. “That has a much bigger relative impact on the economics,” Latimer said.
Geothermal projects have similar economics to other renewables, Latimer said, and being able to sell power to offtakers has helped protect the finances of Fervo’s projects.
Democratic Senators Sheldon Whitehouse and Elizabeth Warren have pressed Federal Reserve chair Jerome Powell on the high rates, citing the effect on renewable investments. “Your decision to rapidly raise interest rates beginning in 2022, and the potential that they may remain too high for too long, has halted advances in deploying renewable energy technologies and delayed significant climate and economic benefits from these projects,” the two wrote in a letter to Powell in March.
Executives from some of the world’s biggest renewables companies have been singing this song, as well. “Renewable energy in general is very, very susceptible to rising interest rates and offshore wind, even the most of all of the renewable energy sectors because it's so capital intensive. Our fuel is free, we say, but our fuel is really the cost of capital because we put so much capital out upfront,” Orsted Americas chief executive officer David Hardy told Bloomberg.
In a May earnings call, Orsted’s global chief executive, Mads Nipper, told investors, “It’s impossible to say whether [costs] have peaked yet, and on the way down, as that will hinge, very much, on the macroeconomic factors, and the rates, specifically.”
The premium renewables can yield over government debt has shrunk dramatically since 2020, BloombergNEF analyst Atin Jain said. In response, developers have increased prices for power purchase agreements, knowing that they can do so thanks to the demand for their clean electrons. But that also means more expensive power when the deals are struck, and in the case of several offshore wind projects in the Northeast, price increases can sometimes mean the deals never get done at all, even in spite of generous IRA tax credits.
“Higher interest rates are driving up project costs and [power purchase agreement] costs as well,” explained Michael Arndt, the president of Recurrent Energy, at a forum hosted by the American Council on Renewable Energy. “Being able to bring in more tax equity is a big offset to a higher interest rate environment.”
According to BNEF data, developers have tried to shorten the term of their borrowing, aiming to avoid getting locked into higher rates for a long time, while also going to the bond market for financing as opposed to bank loans, which typically means paying a lower rate. This then advantages longer tenured and more established developers who are better able to access the bond market. As Esper Nemi, the chief financial officer of the green energy giant Brookfield Renewable Partners, said in a May earnings call, “Our access to scale capital means we can execute on large opportunities where there are fewer viable partners and risk adjusted returns can therefore be very attractive.”
“Where possible, if you’re a creditworthy issuer and you’re more financially stable and have the ability to make regular interest payments, you have been viewed attractively by the bond market,” Jain told me. Bond issuance by utilities and renewable developers has more than doubled since before the pandemic, according to BNEF data. “That’s how people are navigating this environment: cutting loan tenors, doubling down on bonds. Everyone is hoping that though they have to tap more expensive debt now they’ll be able to refinance those loans,” Jain said.
How many people will be able refinance remains to be seen. “Developers with deeper balance sheets are able to navigate this a little bit better than smaller or midsize companies,” Jain added.
Latimer said that higher rates could be particularly challenging to first of a kind projects. Investors have a return they want a new project to generate and that figure moves up with interest rates.
“The return hurdle that you need to hit to entice capital that views your project as a new development and new technology moves up with interest rates,” Latimer told me. “Your project economics have to be that much better relative to what your baseline was before because everyone has higher return expectations.”
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Lower borrowing costs aren’t enough to erase the threat of tariffs and Trump.
It won’t rescue the renewables industry, but at least it’s something.
The Federal Reserve announced today that it will cut the federal funds rate by 0.25 percentage points, bringing it down to between 4% and 4.25%. Fed officials also projected quarter-point rate cuts at the last two meetings of the Federal Open Markets Committee this year.
This may provide some relief to renewables developers and investors, who are especially sensitive to financing costs. “On the financing side, high rates are never going to be exactly a good thing,” Advait Arun, a climate and infrastructure analyst at the Center for Public Enterprise, told me. “I think in this case, it’s going to be good that we’re finally seeing cuts.”
Because the fuel for solar and wind energy is essentially free, the lion’s share of the cost to develop these energy sources comes up front, meaning that interest rates can have a disproportionate effect on how projects pencil out. Renewable projects also tend to carry more debt than fossil fuel projects, according to energy consultancy Wood Mackenzie. When interest rates rise by 2 percentage points, the consultancy estimated, the levelized cost of electricity for renewables rises by 20%, compared to 11% for a gas-fired power plant, which might have higher operating costs but less need to borrow.
But the challenges for the renewables industry go well beyond financing. Developers are still wondering how they will be able to use Chinese-linked components without losing eligibility for clean energy tax credits. Those tax credits now come with a ticking clock after the passage of this summer’s One Big Beautiful Bill Act, which shortened the eligibility period for wind and solar projects. The Treasury Department also tightened the definition of what it means to “start construction,” making qualification even more of a race. All the while, the Trump administration’s regulatory assault on the sector, especially wind, has led to project cancellations across the industry.
“High interest rates obviously impact the business, but there are a lot of other headwinds and other things going wrong, as well,” Gautam Jain, a senior research scholar at the Center on Global Energy Policy at Columbia University, told me. “If anything, compared to the beginning of the year, rates have come down quite a bit.”
Maheep Mandloi, an analyst at the investment bank Mizuho Securities, wrote in a note to clients that renewable stocks rose last week in part because investors saw yields falling on 10-year government bonds. Ten-year Treasuries are a widely used benchmark for corporate debt, and when they get cheaper, it often means that companies can access financing more cheaply.
Falling 10-year yields are also a sign that the market anticipates a Fed rate cut. So far this year, the 10-year Treasury bond yield has fallen from 4.57% to 4.00% as of Wednesday afternoon after the rate cut was announced.
Lower borrowing costs are a welcome transition for the industry. Borrowing costs started to rise dramatically in 2022, as the Fed hiked interest rates to combat the worst inflation the U.S. had seen since the early 1980s. Annual price increases had been bouncing around or even below 2% since the 2008 recession before climbing to as high as 9% in the summer of 2022, following Russia’s invasion of Ukraine, which led to an energy price shock. The uneven and stimulus-fueled economic recovery from Covid-19 also created price instability throughout the economy, including the renewable energy industry.
Renewable energy businesses in particular were hammered by higher interest rates, as well as higher costs for commodities like steel and for final products like solar panels.
Even as unprecedented government support flowed into the renewables industry from the Inflation Reduction Act, signed in August 2022, clean energy stocks continued to stagnate, with the iShares Clean Energy ETF falling over 30% from the beginning of the Biden administration through the end of 2023. (Despite the assault from the Trump administration, the index has actually risen about 30% so far this year after falling in the fall and winter of 2024, as uncertainty around the IRA’s tax credits has dissipated.)
One of the poster children for renewables dysfunction is the Danish wind developer Orsted, which has been a victim of just about every brickbat thrown at the industry. In its most recent financial statement, the company said that its future earnings estimates were imperiled by “assumptions with major uncertainty,” which included “investment tax credits, interest rates, imposed tariffs in the U.S., and the supply chain.”
Home solar giant Sunrun, too, has cited financing stresses. In its most recent quarterly report, the company disclosed that “rising interest rates, including recent historic increases starting in 2021 … [are] reducing the proceeds we receive from certain Funds.” It also acknowledged that “because our financing structure is sensitive to volatility in interest rates, higher rates increase our cost of capital and may decrease the amount of capital available to us to finance the deployment of new solar energy systems.” High rates, the company disclosed, “have impacted and may continue to impact our business and financial results.”
Even as rates come down, the renewable industry still has the Trump administration to contend with. The various agencies of the executive branch have shown little hesitation about getting in the way of renewable energy development, even for projects that are already nearly complete. The Treasury Department also has yet to issue guidance on complying with OBBBA’s rules about sourcing from Chinese suppliers, prolonging uncertainty for many in the industry. Trump’s tariff policy, too, remains a potential wildcard, as developers await a Supreme Court ruling on the legality of the president’s efforts thus far.
“In terms of being able to build more supply with the benefit of lower financing costs,” Arun told me, “I think this is where we’re running into all of the issues with delays in procuring components — the uncertainty regarding whether the tariffs will be struck down or not, and of course, changes to the inflation Reduction Act through the OBBBA.”
Last week, analysts at Rhodium Group projected that Trump’s policies could slow U.S. progress on reducing emissions by more than half.
For renewables developers, the rate cuts may be welcome, but everything else — and there’s a lot of everything else — may be what really matters, Jain told me. “All those things add additional uncertainty, and anybody who’s in the space will be aware that more could come,” he said. “Of course, lower rates will help, but it’s a combination of the two.”
On Democrats’ AI blueprint, more nationalized minerals, and the GOP’s anti-geoengineering push
Current conditions: Tropical Storm Mario is lashing the southwestern U.S. with rainstorms and potential flash flooding • The drought in the Northeast and the Ohio Valley is worsening, with rain deficits in major cities 15% below average • Tropical Cyclone Mirasol is bringing heavy rains to the Philippine island of Luzon.
The Trump administration announced a lawsuit Tuesday aimed at tanking Vermont’s Climate Superfund Act, which set up the nation’s first program to force fossil fuel companies to pay for adaptations to deal with the effects of warming temperatures. The Department of Justice said the legislation “will likely” impose “billions of dollars in liability on foreign and domestic energy companies for their alleged past contributions to climate change.” The motion, filed on Monday, comes months after the Justice Department filed an initial complaint in May targeting the law and similar legislation in New York, Hawaii, and Michigan.
“Like New York, Vermont is usurping the federal government’s exclusive authority over nationwide and global greenhouse gas emissions,” Acting Assistant Attorney General Adam Gustafson said in a press release. “More than that, Vermont’s flagrantly unconstitutional statute threatens to throttle energy production, despite this administration’s efforts to unleash American energy. It’s high time for the courts to put a stop to this crippling state overreach.”
Arizona Senator Mark Kelly. Chip Somodevilla/Getty Images
Arizona Senator Mark Kelly released a proposal Wednesday morning designed to give Democrats a roadmap to back the buildout of data centers to support the boom in artificial intelligence. The 16-page pitch makes no mention of novel tools grid operators are considering to force data centers to dial back electricity consumption when power supply is low, known as demand response. But the proposal does call for establishing a pipeline of projects to support large-scale clean electricity production from 24/7 sources. “While solar and battery storage dominate today’s pipeline, they alone can’t reliably power the AI,” the blueprint reads. “We must build an innovation pipeline for geothermal, nuclear, and other clean dependable sources, while also deploying near-term solutions that advance and strengthen our energy systems for the demands ahead.”
The value of finding ways to add more data centers before that large new power output is available is the big reason for supporting the curtailment of electricity usage at big server farms, Heatmap’s Matthew Zeitlin wrote last month. “Creating a system where data centers can connect to the grid sooner if they promise to be flexible about power consumption would require immense institutional change for states, utilities, regulators, and power markets.”
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The U.S. government is in talks to set up a multibillion-dollar fund for overseas mining projects to help counter China’s grip over the world’s critical mineral supply, the Financial Times reported. The Trump administration is discussing the effort with the New York investment firm Orion Resource Partners, and looking to establish the fund under the U.S. International Development Finance Corporation. The fund would invest in projects to produce minerals such as copper and rare earths. “These talks really show that the [Donald] Trump administration is trying to align its financial tools with its broader mineral ambitions,” Gracelin Baskaran, director of the critical minerals security programme at the Center for Strategic and International Studies in Washington, told the newspaper. “This public-private partnership stands to catalyze a significant amount of capital.”
The move is the latest effort by the Trump administration to take on a bigger role in the mining industry, which requires high upfront costs and years-long development timelines that pose problems for companies beholden to quarterly shareholder updates. In July, the Department of Defense took an ownership stake in MP Materials, the only active rare earths producer in the U.S., marking the most significant federal intervention in the private sector since Washington nationalized railways during World War I. In a sign of the dealmaking environment, Heatmap’s Katie Brigham wrote this month that “everybody wants to invest in critical mineral startups.”
The House of Representatives held a hearing Tuesday on the risks posed by weather modification and geoengineering technologies. Led by Georgia Republican Representative Marjorie Taylor Greene, the hearing — entitled “Playing God with the Weather — a Disastrous Forecast” — examined the idea of manipulating the makeup of the atmosphere to artificially cool the planet, which is an emerging, if hotly contested, idea among some commercial startups. GOP officials such as Greene and Secretary of Health and Human Services Robert F. Kennedy, Jr., have raised concerns over what such technology could do. The issue took on a new partisan valence after the flash flooding that killed more than 135 people in Texas this summer, which Fox News suggested could be linked to cloud-seeding experiments underway in the region.
In his testimony, Christopher Martz, a meteorologist and policy analyst at the Committee for a Constructive Tomorrow, warned that there were still major uncertainties about the potential deployment of geoengineering technologies. At times, however, the questioning devolved into debates over the reality of settled science about the effects of fossil fuel emission on warming itself.
“Did man create the Ice Age?” Greene asked Martz at one point.
“No,” he responded.
“Yeah, right, so none of us were alive back then to know for sure,” she said.
Solar developer PosiGen is planning to pull out of three of its projects in Connecticut. The company told state officials late last month it would need to shut down its facilities, eliminating 78 jobs, as financing dried up for the projects. The move highlighted the challenges ahead for the solar industry as federal tax credits barrel toward next year’s phaseout deadline. In 2015, the Connecticut Green Bank helped fund low-and moderate-income homeowners’ purchase of solar panels through PosiGen. But the federal program backing the effort, known as Solar for All, is set to unwind under the Trump administration. The company expects to start laying off workers in Connecticut next week, according to the news site CT Insider.
Robert Redford died Tuesday at 89 years old. During his lengthy career and filmography, the actor fashioned himself as an activist voice for a number of causes, including the U.S. effort to decarbonize its electrical sector. In February 2016, after the Supreme Court paused the Obama administration’s Clean Power Plan, Redford accused the conservative justices of rendering a verdict “on the wrong side of history” in an op-ed in Time magazine. “It was a clear departure from how our courts normally handle government oversight. And I cringe at how we will have to answer to history. When our children and their children ask, ‘When the majority of Earth’s citizens — its scientists, military professionals, industrialists, and more — realized the threat of climate change was real, why didn’t you do more? Why did you delay?’”
Rob talks with Sarah Kapnick about our new era of energy insecurity.
We live in a new energy era — one in which the inputs and technologies key to clean electricity production are at the heart of international politics. What will that mean for decarbonization? And how should climate tech companies prepare?
On this week’s episode of Shift Key, Rob chats about those questions and more with Dr. Sarah Kapnick. She is the Global Head of Climate Advisory at J.P. Morgan, where she advises the bank's clients on climate, energy, biodiversity and sustainability topics. She was the former chief scientist at the National Oceanic and Atmospheric Administration from 2022 to 2024, and was previously a research scientist at NOAA’s Geophysical Fluid Dynamics Laboratory in Princeton, New Jersey.
Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap, and Jesse Jenkins, a professor of energy systems engineering at Princeton University. Jesse is off this week.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, YouTube, or wherever you get your podcasts.
You can also add the show’s RSS feed to your podcast app to follow us directly.
Here is an excerpt from our conversation:
Robinson Meyer: When companies come to you looking for help navigating this particular moment — where federal policy is quite up in the air, where rates are coming down but kind of high, AI capex is surging — what advice do you give them for navigating this moment?
Sarah Kapnick: The advice that I give them is looking to some of those things that strategically are likely to have more consistency over time, and that they’re looking for those places of more consistency, and that they feel that they can invest in, that they will have support ongoing — particularly if it’s a project that lasts beyond administrations.
They’re really concerned with what they think is going to last. And then for the stuff that doesn’t, that there may be more volatility, they want to identify that volatility, and they want to think through, okay, how can I take opportunity now if I think there’s a small window for it? Or how do I plan for taking opportunity when the opportunity presents itself down the line?
And so, it’s a mixture of long-term planning and thinking through, strategically, where the world is headed and where they can fit in over time, yet also taking opportunities that either present themselves now or they have conviction that will present themselves soon, and then being ready to be the first when that opportunity presents themselves so that they can run with it.
Mentioned:
The New Map of Energy and Geopolitics
Previously on Shift Key: How China’s Industrial Policy Really Works
This episode of Shift Key is sponsored by …
Hydrostor is building the future of energy with Advanced Compressed Air Energy Storage. Delivering clean, reliable power with 500-megawatt facilities sited on 100 acres, Hydrostor’s energy storage projects are transforming the grid and creating thousands of American jobs. Learn more at hydrostor.ca.
Music for Shift Key is by Adam Kromelow.