You’re out of free articles.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Sign In or Create an Account.
By continuing, you agree to the Terms of Service and acknowledge our Privacy Policy
Welcome to Heatmap
Thank you for registering with Heatmap. Climate change is one of the greatest challenges of our lives, a force reshaping our economy, our politics, and our culture. We hope to be your trusted, friendly, and insightful guide to that transformation. Please enjoy your free articles. You can check your profile here .
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Subscribe to get unlimited Access
Hey, you are out of free articles but you are only a few clicks away from full access. Subscribe below and take advantage of our introductory offer.
subscribe to get Unlimited access
Offer for a Heatmap News Unlimited Access subscription; please note that your subscription will renew automatically unless you cancel prior to renewal. Cancellation takes effect at the end of your current billing period. We will let you know in advance of any price changes. Taxes may apply. Offer terms are subject to change.
Create Your Account
Please Enter Your Password
Forgot your password?
Please enter the email address you use for your account so we can send you a link to reset your password:
Geothermal is getting closer to the big time. Last week, Fervo Energy — arguably the country’s leading enhanced geothermal company — announced that its Utah demonstration project had achieved record production capacity. The new approach termed “enhanced geothermal,” which borrows drilling techniques and expertise from the oil and gas industry, seems poised to become a big player on America’s clean, 24/7 power grid of the future.
Why is geothermal so hot? How soon could it appear on the grid — and why does it have advantages that other zero-carbon technologies don’t? On this week’s episode of Shift Key, Rob and Jesse speak with a practitioner and an expert in the world of enhanced geothermal. Sarah Jewett is the vice president of strategy at Fervo Energy, which she joined after several years in the oil and gas industry. Wilson Ricks is a doctoral student of mechanical and aerospace engineering at Princeton University, where he studies macro-energy systems modeling. 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.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, 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: I just wanted to hit a different note here, which is, Sarah, you’ve alluded a few times to your past in the oil and gas industry. I think this is true across Fervo, is that of course, the technologies we’re discussing here are fracking derived. What has your background in the oil and gas industry and hydrocarbons taught you that you think about at Fervo now, and developing geothermal as a resource?
Sarah Jewett: There are so many things. I mean, I’m thinking about my time in the oil and gas industry daily. And you’re exactly right, I think today about 60% of Fervo’s employees come from the oil and gas industry. And because we are only just about to start construction on our first power facility, the percentage of contractors and field workers from the oil and gas industry is much higher than 60%.
Jesse Jenkins: Right, you can’t go and hire a bunch of people with geothermal experience when there is no large-scale geothermal industry to pull from.
Jewett: That’s right. That’s right. And so the oil and gas industry, I think, has taught us, so many different types of things. I mean, we can’t really exist without thinking about the history of the oil and gas industry — even, you know, Wilson and I are sort of comparing our learning rates to learning rates observed in various different oil and gas basins by different operators, so you can see a lot of prior technological pathways.
I mean, first off, we’re just using off the shelf technology that has been proven and tested in the oil and gas industry over the last 25 years, which has been, really, the reason why geothermal is able to have this big new unlock, because we’re using all of this off the shelf technology that now exists. It’s not like the early 2000s, where there was a single bit we could have tried. Now there are a ton of different bits that are available to us that we can try and say, how is this working? How is this working? How’s this working?
So I think, from a technological perspective, it’s helpful. And then from just an industry that has set a solid example it’s been really helpful, and that can be leveraged in a number of different ways. Learning rates, for example; how to set up supply chains in remote areas, for example; how to engage with and interact with communities. I think we’ve seen examples of oil and gas doing that well and doing it poorly. And I’ve gotten to observe firsthand the oil and gas industry doing it well and doing it poorly.
And so I’ve gotten to learn a lot about how we need to treat those around us, explain to them what it is that we’re doing, how open we need to be. And I think that has been immensely helpful as we’ve crafted the role that we’re going to play in these communities at large.
Wilson Ricks: I think it’s also interesting to talk about the connection to the oil and gas industry from the perspective of the political economy of the energy transition, specifically because you hear policymakers talk all the time about retraining workers from these legacy industries that, if we’re serious about decarbonizing, will unavoidably have to contract — and, you know, getting those people involved in clean energy, in these new industries.
And often that’s taking drillers and retraining some kind of very different job — or coal miners — into battery manufacturers. This is almost exactly one to one. Like Sarah said, there’s additional expertise and experience that you need to get really good at doing this in the geothermal context. But for the most part, you are taking the exact same skills and just reapplying them, and so it allows for both a potentially very smooth transition of workforces, and also it allows for scale-up of enhanced geothermal to proceed much more smoothly than it potentially would if you had to kind of train an entire workforce from scratch to just do this.
This episode of Shift Key is sponsored by …
Watershed’s climate data engine helps companies measure and reduce their emissions, turning the data they already have into an audit-ready carbon footprint backed by the latest climate science. Get the sustainability data you need in weeks, not months. Learn more at watershed.com.
As a global leader in PV and ESS solutions, Sungrow invests heavily in research and development, constantly pushing the boundaries of solar and battery inverter technology. Discover why Sungrow is the essential component of the clean energy transition by visiting sungrowpower.com.
Antenna Group helps you connect with customers, policymakers, investors, and strategic partners to influence markets and accelerate adoption. Visit antennagroup.com to learn more.
Music for Shift Key is by Adam Kromelow.
Log in
To continue reading, log in to your account.
Create a Free Account
To unlock more free articles, please create a free account.
Current conditions: Shanghai, still recovering from the strongest storm to hit the city in 75 years, is bracing for Typhoon Pulasan • Extreme flooding in the north of Italy has forced some 1,000 people to evacuate • It’s looking unlikely that this month will break last year’s record for warmest September ever.
The explosive growth in solar power shows no signs of stopping this year. New analysis from energy think tank Ember forecasts the world is on track to add 593 gigawatts of solar power in 2024, nearly 30% more than last year’s installations and nearly 200 GW more than the International Energy Agency predicted at the start of the year. The report underscores how a handful of countries are responsible for most of the world’s new solar capacity. China leads, followed by the U.S., India, Germany, and Brazil. These five countries are on track to account for 75% of new global installations in 2024. And they are sustaining their growth year after year.
Ember
Here’s the most important takeaway from the Ember report: “This now puts ambitious climate pledges within reach.” It’s very possible – and indeed likely – that the world will triple solar capacity by 2030. In this scenario, solar power would generate a quarter of the world’s electricity. “Countries need to plan ahead to make the most of the high levels of solar capacity being built today and ensure the continued build-out of capacity in the coming years,” the report says.
The Federal Reserve announced yesterday that it would reduce the benchmark federal funds rate by half a percentage point, from just over 5% to just below. What does this mean for renewable energy? Well, it just became a much more enticing investment, wrote Heatmap’s Matthew Zeitlin. High interest rates have an outsize effect on renewable energy projects, because the cost of building and operating a renewable energy generator like a wind farm is highly concentrated in its construction. Wood Mackenzie estimates that a 2% increase in interest rates pushes up the cost of energy produced by a renewables project by around 20%, compared to just over 10% for conventional power plants. “As rates fall, projects become increasingly financially viable,” said Advait Arun, senior associate of energy finance at the Center for Public Enterprise and Heatmap contributor.
The European Union’s head office has warned that the extreme weather devastating parts of the continent are proof that “climate breakdown” is “fast becoming the norm,” The Associated Pressreported. Parts of Europe are experiencing some of the worst flooding in at least two decades, while Portugal has declared a “state of calamity” as enormous wildfires rage out of control and threaten the homes of more than 200,000 people. “We face a Europe that is simultaneously flooding and burning. These extreme weather events ... are now an almost annual occurrence,” said EU Crisis Management Commissioner Janez Lenarcic. “The global reality of the climate breakdown has moved into the everyday lives of Europeans.” Europe is the fastest warming continent on Earth.
Today the startup Brightband emerged from stealth with $10 million in Series A funding and a unique plan to commercialize generative AI weather modeling. Instead of trying to go up against Weather.com, Brightband is tailoring models to specific industries such as insurance, finance, agriculture, energy, and transportation. The round was led by Prelude Ventures. AI models like Brightband’s are trained on decades worth of past weather data, and when fed a snapshot of current conditions, can predict what will come next, much like ChatGPT does with text. Brightband’s CEO Julian Green told Heatmap’s Katie Brigham that customizing forecasts for particular industries will also be as simple as querying a large language model. A wind farm operator could, for example, “just take an attached file of historical wind energy production, and throw it in there and say, hey, tell me what the wind energy is going to be like next week.” Brightband says it hopes to publish a paper by year’s end with an open-source version of its forecast model, alongside evaluation tools to assess its performance.
Truck drivers seem to really like Tesla’s Semi electric truck. PepsiCo is Tesla’s first customer for the trucks, and has 89 of them deployed across various fleets. Speaking at the IAA Transportation event, PepsiCo’s electrification program manager Dejan Antunović said some veteran drivers are reporting that they never want to go back to driving diesel after having handled the Tesla Semi. “Based on its history of delivering efficient electric vehicles in volume profitably, I think Tesla is the one to make commercial electric trucks happen at scale,” wroteElectrek’s Fred Lambert.
Researchers were pleasantly surprised to discover that 90% of young corals that were bred using in vitro fertilization and deposited in reefs across the Caribbean survived last year’s marine heatwave.
Brightband emerges from stealth to commercialize AI-weather forecasting.
The weather has never been hotter.
The past few years have seen a boom in the weather prediction industry, with AI-based weather models from the likes of Google DeepMind, Huawei, and Nvidia consistently outperforming traditional models. Most of that work has been research-oriented, but today the startup Brightband emerged from stealth with $10 million in Series A funding and a unique plan to commercialize generative AI weather modeling. Instead of trying to go up against Weather.com, Brightband is tailoring models to specific industries such as insurance, finance, agriculture, energy, and transportation. The round was led by Prelude Ventures.
Weather forecasting has traditionally been the domain of the public sector, with the most widely used models coming from the U.S. National Weather Service and the European Center for Medium-Range Weather Forecasts. Brightband’s CEO Julian Green told me that private companies haven’t been able to break in “because it has cost so much to have billion dollar supercomputers,” which are required to run today’s so-called “numerical” weather models.
These models rely on complex atmospheric equations based on the laws of physics to predict future weather patterns, and because of their computational intensity, are usually only updated four times daily. It’s possible then that AI-based weather prediction could thus actually reduce energy demand — because while it takes a lot of energy to train an AI model, after that’s done, generating forecasts is simple. “So instead of six hours to have a forecast, it takes under a second. Instead of using a billion dollar supercomputer, you’re using a laptop,” Green told me.
AI models like Brightband’s are trained on decades worth of past weather data, and when fed a snapshot of current conditions, can predict what will come next, much like ChatGPT does with text. “Think about the weather AI prediction problem as predicting the next frame in a radar sequence,” Green told me.
He said that customizing forecasts for particular industries will also be as simple as querying a large language model. A wind farm operator could, for example, “just take an attached file of historical wind energy production, and throw it in there and say, hey, tell me what the wind energy is going to be like next week.” Likewise folks in the aviation industry could have the model tell them if their plane’s wings are likely to ice up, utilities could get detailed insight into expected energy demand and generation, and finance companies could get up-to-the-minute information about weather-sensitive commodities. Previously, companies would’ve had to build their own forecasting teams or hire third-party advisors to get such specific predictions.
Brightband wants to further differentiate itself from the types of models that tech companies have already built by using only raw data inputs to generate its forecasts, from sources such as satellites, weather balloons, and radar systems. Perhaps surprisingly, this is not the way that most models currently work. Because there are data gaps, such as over oceans and in the developing world, the datasets used to train today’s AI weather models, Green explained, “smear the available data over a three-dimensional grid of the globe,” diluting the accuracy of both the real-time weather and presumably the resulting forecasts.
It’s hard to say how much more accurate using only raw data inputs will be, because “that’s what nobody has done yet,” Green told me. Data gaps are still an issue of course, but Green told me that Brightband’s approach will also allow the company to better analyze when and where filling these gaps would add the most value.
Brightband says it hopes to publish a paper by year’s end with an open-source version of its forecast model, alongside evaluation tools to assess its performance.
Renewable energy just became a much more enticing investment.
That’s thanks to the Federal Reserve, which announced today that it would reduce the benchmark federal funds rate by half a percentage point, from just over 5% to just below. It’s the beginning of an unwinding of years of high interest rates that have weighed on the global economy and especially renewable energy.
The Federal Reserve’s economic projections also indicated that the federal funds rate could fall another half point by the end of the year and a full point in 2025. The Federal Reserve began hiking interest rates from their near-zero levels in March 2022 in response to high inflation.
High interest rates, which drive up the cost of borrowing money, have an outsize effect on renewable energy projects. That’s because the cost of building and operating a renewable energy generator like a wind farm is highly concentrated in its construction, as opposed to operations, thanks to the fact that it doesn’t have to pay for fuel in the same way that a natural gas or coal-fired power plant does. This leaves developers highly exposed to the cost of borrowing money, which is directly tied to interest rates. “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 David Hardy said in June.
So what does that mean in practice? Let’s look at some numbers.
Wood Mackenzie estimates that a 2% increase in interest rates pushes up the cost of energy produced by a renewables project by around 20%, compared to just over 10% for conventional power plants.
Meanwhile the investment bank Lazard estimates that reducing the cost of capital (the combined cost of borrowing money and selling equity in a project, both of which can be affected by interest rates) from 7.7% — the bank’s rough assumption over the summer — to 5.4% would lower the levelized cost of energy for an offshore wind system from $118 to $97 — around 17% — and for a utility solar project from $76 to $54 — roughly 28%. While there's not a one-to-one relationship between interest rates and the cost of capital, they move in the same direction.
Reductions in cost of capital also make more renewables project viable to finance. According to a model developed by the Center for Public Enterprise, a typical renewable energy project with a weighted average cost of capital of 7.75% will have a debt service coverage ratio (a project’s cash flow compared to its loan payments)of 1.16. Investors consider projects to be roughly viable at 1.25.
So at the cost of capital assumed by Lazard, many projects will not get funded because investors don't see them as viable. If the weighted average cost of capital were to fall one percentage point to 6.75%, a project’s debt service coverage ratio would rise to 1.28, just above the viability threshold. If it fell by another percentage point, the debt ratio would hit a likely compelling 1.43.
“As rates fall, projects become increasingly financially viable,” Advait Arun, senior associate of energy finance at the Center for Public Enterprise and Heatmap contributor, told me matter-of-factly.