Sign In or Create an Account.

By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy

Economy

A Sigh of Interest Rate Relief for Renewables

The Fed chair signaled cuts on the horizon, much to the joy of clean energy investors.

A Sigh of Interest Rate Relief for Renewables

Are clean energy developers finally free from high interest rates? Not yet, but this might be the beginning of the end. At the Federal Reserve’s annual conference in Jackson Hole, Fed chair Jerome Powell told attendees, “The time has come for policy to adjust.”

Analysts and market participants immediately appeared to interpret this as locking in a series of interest rate cuts starting at the next Federal Open Market Committee meeting next month. Stocks immediately rose and yields on U.S. government debt fell. Market prognosticators expect the federal funds rate to fall a quarter of a percentage point at the September meeting, but there’s a reasonable chance the cut would be larger.

The renewable energy industry — or at least its share prices — got in on the party. Shares of NextEra, which has a massive renewables business, rose following the speech. The stock price of Iberdrola, the Spanish utility with a large wind business, rose after text of the speech was released. The iShares Global Clean Energy ETF, which tracks a range of clean energy companies, is up more than 2.5% today. (No such luck for GE Vernova, which manufactures wind turbines — its shares fell today after another turbine blade failure at the Dogger Bank wind farm off the coast of England, coming barely a month after a blade manufacturing defect led to the Vineyard Wind disaster.)

Renewables investors are particularly giddy at the moment because for years now, the industry has disproportionately suffered the effects of high interest rates compared to fossil fuels. Unlike a natural gas- or coal-fired power plant, a wind turbine or a solar panel does not have to pay for its fuel. In the long term that’s a win, because there is no such thing as a wind pipeline rupture or the discovery of new reserves of sun, and therefore nothing that can send prices reeling. But in the short term, that means the lifetime cost of a solar or wind farm is heavily weighted towards building it.

And to build, you need to borrow money.

“Wind and solar have taken a beating from high interest rates because they’re very capital intensive projects,” Lori Bird, director of the World Resources Institute’s U.S. Energy Program, told me. “Because they’re capital intensive, a 2 percentage point increase in interest rates yields a 20% increase in the cost of electricity, compared to 11% from fossil,” Bird said, citing estimates from Wood Mackenzie.

Developers take out construction loans to build their projects and then pay those back with a term loan that covers the life of the project, explained Advait Arun, senior associate of energy finance at the Center for Public Enterprise (and also a Heatmap contributor).

“If you’re a developer who’s going through the construction process right now, your construction loan is probably floating-rate, so the amount of of interest you’re paying on your construction loan will fall,” Arun said. After you're done building, you get another loan to pay off the construction loan, and that loan can be smaller if your construction loan gets cheaper thanks to lower rates.

These longer-term loans are paid back from the project’s revenues over the life span of the project, which means that the developer or investor will not have to earn as much from selling the electricity to cover the cost of their debt.

Alongside the supply chain issues and inflation that developers — especially offshore wind developers — had to deal with over the last few years, high interest rates have led to higher costs for the power that renewables developers sell. The price of power purchase agreements for wind and solar rose in 2023, thanks, in part, to high rates, and only stabilized early this year as investors became convinced that cuts were finally close.

But whether these lower financing costs turn into higher profits or lower prices for electricity consumers is, unfortunately, not a sure thing — which is one reason why the industry's shareholders may have responded positively to Powell's speech.

“I think profit expectations will rise,” Arun said. “If there’s less money you need to pay in debt service, it doesn’t mean developers will pass on price savings.”

Green

You’re out of free articles.

Subscribe today to experience Heatmap’s expert analysis 
of climate change, clean energy, and sustainability.
To continue reading
Create a free account or sign in to unlock more free articles.
or
Please enter an email address
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Climate Tech

Exclusive: Octopus Energy Launches Battery-Powered Electricity Plan With Lunar

The companies are offering Texas ratepayers a three-year fixed-price contract that comes with participation in a virtual power plant.

Octopus and Lunar Energy.
Heatmap Illustration/Getty Images

Customers get a whole lot of choice in Texas’ deregulated electricity market — which provider to go with, fixed-rate or variable-rate plan, and contract length are all variables to consider. If a customer wants a home battery as well, that’s yet another exercise in complexity, involving coordination with the utility, installers, and contractors.

On Wednesday, residential battery manufacturer and virtual power plant provider Lunar Energy and U.K.-based retail electricity provider Octopus Energy announced a partnership to simplify all this. They plan to offer Texas electricity ratepayers a single package: a three-year fixed-rate contract, a 30-kilowatt-hour battery, and automatic participation in a statewide network of distributed energy resources, better known as a virtual power plant, or VPP.

Keep reading...Show less
Blue
AM Briefing

Blowing the Whistle

On Trump’s renewables embargo, Project Vault, and perovskite solar

Pollution.
Heatmap Illustration/Getty Images

Current conditions: Illinois far outpaces every other state for tornadoes so far this year, clocking 80, with Mississippi in a distant second with 43 • Western North Carolina’s Blue Ridge Mountains face high wildfire risk during the day and frost at night • A magnitude 7.4 earthquake off the coast of Honshu, Japan, has raised the risk of a tsunami.

THE TOP FIVE

1. Whistleblowers allege big problems with corporate carbon standards-setter

The nonprofit that sets the standards against which tens of thousands of companies worldwide measure their greenhouse gas emissions is secretive and ideologically tilted toward industry. That’s the conclusion of a new whistleblower report on which Heatmap’s Emily Pontecorvo got her hands yesterday. The problems at the Greenhouse Gas Protocol “are systemic,” and the nonprofit “seems to be moving further away from its commitment to accountability,” the report said. Danny Cullenward, the economist and lawyer focused on scientific integrity in climate science at the University of Pennsylvania’s Kleinman Center for Energy Policy who authored the report, sits on the Protocol’s Independent Standards Board. Due to a restrictive non-disclosure agreement preventing him from talking about what he has witnessed, he instead relied on publicly available information to illustrate the report. “Not only does the nonprofit community not have a voice on the board,” Cullenward wrote, but the absence of those voices “risks politicizing the work of scientist Board members.” Emily added: “While the Protocol’s official decision-making hierarchy deems scientific integrity as its top priority, in practice, scientists are left to defend the science to the business community.” The report follows a years-long process meant to bolster the group’s scientific credibility. “Critics have long faulted the Protocol for allowing companies to look far better on paper than they do to the atmosphere,” Emily explains. But creating standards that are both scientifically robust and feasible to implement is no easy feat.

Keep reading...Show less
Red
Carbon Removal

Leading Climate Standards Group Fraught With Secrecy and Bias, Whistleblowers Say

A new report shared exclusively with Heatmap documents failures of transparency and governance at the Greenhouse Gas Protocol.

Pollution and trees.
Heatmap Illustration/Getty Images

It is something of a miracle that tens of thousands of companies around the world voluntarily report their greenhouse gas emissions each year. In 2025, more than 22,100 businesses, together worth more than half the global stock market, disclosed this data. Unfortunately, it’s an open secret that many of their calculations are far off the mark.

This is not exactly their fault. To aid in the tedious process of tallying up carbon and to encourage a basic level of uniformity in how it’s done, companies rely on standards created by a nonprofit called the Greenhouse Gas Protocol. The group’s central challenge is ensuring that its standards are both credible and feasible — two qualities often in tension in greenhouse gas accounting. The method that produces the most accurate emissions inventory may not always be feasible, while the method that’s easy to implement may produce wildly inaccurate results.

Keep reading...Show less
Yellow