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A practical guide to using the climate law to get cheaper solar panels, heat pumps, and more.

Today marks the one year anniversary of the Inflation Reduction Act, the biggest investment in tackling climate change the United States has ever made. The law consists of dozens of subsidies to help individuals, households, and businesses adopt clean energy technologies. Many of these solutions will also help people save money on their energy bills, reduce pollution, and improve their resilience to disasters.
But understanding how much funding is available for what, and how to get it, can be pretty confusing. Many Americans are not even aware that these programs exist. A poll conducted by The Washington Post and the University of Maryland in late July found that about 66% of Americans say they have heard “little” or “nothing at all” about the law’s incentives for installing rooftop solar panels, and 77% have heard little or nothing about subsidies for heat pumps. This tracks similar polling that Heatmap conducted last winter, suggesting not much has changed since then.
Below is Heatmap’s guide to the IRA’s incentives for cutting your carbon footprint at home. If you haven’t heard much about how the IRA can help you decarbonize your life, this guide is for you. If you have heard about the available subsidies, but aren’t sure how much they are worth or where to begin, I’ll walk you through it. (And if you’re looking for information about the electric vehicle tax credit, my colleague at Heatmap Robinson Meyer has you covered with this buyer’s guide.)
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There’s funding for almost every solution you can think of to make your home more energy efficient and reduce your fossil fuel use, whether you want to install solar panels, insulate your attic, replace your windows, or buy electric appliances. If you need new wiring or an electrical panel upgrade before you can get heat pumps or solar panels, there’s some money available for that, too.
The IRA created two types of incentives for home energy efficiency improvements: Unlimited tax credits that will lower the amount you owe when you file your taxes, and $8.8 billion in rebates that function as up-front discounts or post-installation refunds on equipment and services.
The tax credits are available now, but the rebates are not. The latter will be administered by states, which must apply for funding and create programs before the money can go out. The Biden administration began accepting applications at the end of July and expects states to begin rolling out their programs later this year or early next.
The home tax credits are available to everyone that owes taxes. The rebates, however, will have income restrictions (more on this later).
“The Inflation Reduction Act is not a limited time offer,” according to Ari Matusiak, the CEO of the nonprofit advocacy group Rewiring America. The rebate programs will only be available until the money runs out, but, again, none of them have started yet. Meanwhile, there’s no limit on how many people can claim the tax credits, and they’ll be available for at least the next decade. That means you don’t need to rush and replace your hot water heater if you have one that works fine. But when it does break down, you’ll have help paying for a replacement.
You might want to hold off on buying new appliances or getting insulation — basically any improvements inside your house. There are tax credits available for a lot of this stuff right now, but you’ll likely be able to stack them with rebates in the future.
However, if you’re thinking of installing solar panels on your roof or getting a backup battery system, there’s no need to wait. The rebates will not cover those technologies.
A few other caveats: There’s a good chance your state, city, or utility already offers rebates or other incentives for many of these solutions. Check with your state’s energy office or your utility to find out what’s available. Also, it can take months to get quotes and line up contractors to get this kind of work done. If you want to be ready when the rebates hit, it’s probably a good idea to do some of the legwork now.
If you do nothing else this year, consider getting a professional home energy audit. This will cost several hundred dollars, depending on where you live, but you’ll be able to get 30% off or up to $150 back under the IRA’s home improvement tax credit. Doing an audit will help you figure out which solutions will give you the biggest bang for your buck, and how to prioritize them once more funding becomes available. The auditor might even be able to explain all of the existing local rebate programs you’re eligible for.
The Internal Revenue Service will allow you to work with any home energy auditor until the end of this year, but beginning in 2024, you must hire an auditor with specific qualifications in order to claim the credit.
Let’s start with what’s inside your home. In addition to an energy audit, the Energy Efficiency Home Improvement Credit offers consumers 30% off the cost (after any other subsidies, and excluding labor) of Energy Star-rated windows and doors, insulation, and air sealing.
There’s a maximum amount you can claim for each type of equipment each year:
$600 for windows
$500 for doors
$1,200 for air sealing and insulation
The Energy Efficiency Home Improvement Credit also covers heat pumps, heat pump water heaters, and electrical panel upgrades, including the cost of installation for those systems. You can get:
$2,000 for heat pumps
$600 for a new electrical panel
Yes, homeowners can only claim up to $3,200 per year under this program until 2032.
Also, one downside to the Energy Efficiency Home Improvement Credit is that it does not carry over. If you spend enough on efficiency to qualify for the full $3,200 in a given year, but you only owe the federal government $2,000 for the year, your bill will go to zero and you will miss out on the remaining $1,200 credit. So it could be worth your while to spread the work out.
The other big consumer-oriented tax credit, the Residential Clean Energy Credit, offers homeowners 30% off the cost of solar panels and solar water heaters. It also covers battery systems, which store energy from the grid or from your solar panels that you can use when there’s a blackout, or sell back to your utility when the grid needs more power.
The subsidy has no limits, so if you spend $35,000 on solar panels and battery storage, including labor, you’ll be eligible for the full 30% refund, or $10,500. The credit can also be rolled over, so if your tax liability that year is only $5,000, you’ll be able to claim more of it the following year, and continue doing so until you’ve received the full value.
Geothermal heating systems are also covered under this credit. (Geothermal heat pumps work similarly to regular heat pumps, but they use the ground as a source and sink for heat, rather than the ambient air.)
Here’s what we know right now. The IRA funded two rebate programs. One, known as the Home Energy Performance-Based Whole House Rebates, will provide discounts to homeowners and landlords based on the amount of energy a home upgrade is predicted to save.
Congress did not specify which energy-saving measures qualify — that’s something state energy offices will decide when they design their programs. But it did cap the total amount each household could receive, based on income. For example, if your household earns under 80% of the area median income, and you make improvements that cut your energy use by 35%, you’ll be eligible for up to $8,000. If your household earns more than that, you can get up to $4,000.
There’s also the High-Efficiency Electric Home Rebate Program, which will provide discounts on specific electric appliances like heat pumps, an induction stove, and an electric clothes dryer, as well as a new electrical panel and wiring. Individual households can get up to $14,000 in discounts under this program, although there are caps on how much is available for each piece of equipment. This money will only be available to low- and moderate-income households, or those earning under 150% of the area median income.
Renters with a household income below 150% of the area median income qualify for rebates on appliances that they should be able to install without permission from their landlords, and that they can take with them if they move. For example, portable appliances like tabletop induction burners, clothes dryers, and window-unit heat pumps are all eligible for rebates.
It’s also worth noting that there is a lot of funding available for multifamily building owners. If you have a good relationship with your landlord, you might want to talk to them about the opportunity to make lasting investments in their property. Under the performance-based rebates program, apartment building owners can get up to $400,000 for energy efficiency projects.
For the most part, yes. But the calculus gets tricky when it comes to heat pumps.
Experts generally agree that no matter where you live, switching from an oil or propane-burning heating system or electric resistance heaters to heat pumps will lower your energy bills. Not so if you’re switching over from natural gas.
Electric heat pumps are three to four times more efficient than natural gas heating systems, but electricity is so much more expensive than gas in some parts of the country that switching from gas to a heat pump can increase your overall bills a bit. Especially if you also electrify your water heater, stove, and clothes dryer.
That being said, Rewiring America estimates that switching from gas to a heat pump will lower bills for about 60% of households. Many utilities offer tools that will help you calculate your bills if you make the switch.
The good news is that all the measures I’ve discussed in this article are expected to cut carbon emissions and pollution, even if most of your region’s electricity still comes from fossil fuels. For some, that might be worth the monthly premium.
Tax Credit #1 offers 30% off the cost of energy audits, windows, doors, insulation, air sealing, heat pumps, electrical panels, with a $3200-per-year allowance and individual item limits.
Tax Credit #2 offers 30% off the cost of solar panels, solar water heaters, batteries, and geothermal heating systems.
Rebate Program #1 will offer discounts on whole-home efficiency upgrades depending on how much they reduce your energy use, with an $8,000 cap for lower-income families and a $4,000 cap for everyone else.
Rebate Program #2 is only for low- and moderate- income households, and will offer discounts on specific electric appliances, with a $14,000 cap.
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How China emerged the victor of the war with Iran.
The Strait of Hormuz appears to maybe be opening up eventually — and the price of oil is collapsing.
Iranian Foreign Minister Abbas Araghchi said Friday morning that the waterway was “completely open,” shortly before President Trump declared on Truth Social that the strait was “COMPLETELY OPEN AND READY FOR BUSINESS AND FULL PASSAGE,” though the president also clarified that “THE NAVAL BLOCKADE WILL REMAIN IN FULL FORCE AND EFFECT AS IT PERTAINS TO IRAN.”
Eurasia Group analyst Greg Brew cautioned me that, as was the case when Trump announced a ceasefire last week, the actual status of the Strait of Hormuz has remained unchanged. Iran’s position is that traffic from non-hostile countries can go through the strait as long as ships coordinate with its government and follow a route that hugs its coastline; the U.S. has insisted for over a week that the strait is open, and has been blockading traffic from Iran.
That’s not to say today’s announcement was meaningless. “There has been movement from both the U.S. and Iran on the issues that matter — namely, Iran’s nuclear program,” Brew told me. Meanwhile, “there’s a lot of ambiguity, and there’s a lack of clarification on the status of the strait. The upshot of that is shippers don’t feel secure in using the strait.”
As for the mutual statements, Brew said they were a sign that “both sides have acknowledged a mutual interest in having the strait reopen.” The market, meanwhile “is responding to the positive vibes that the president and, to some extent, the Iranians are putting out regarding the status of Hormuz moving forward.” Oil prices fell substantially Friday, with the West Texas Intermediate benchmark price down 10.5% to around $85 per barrel.
While the final disposition of the conflict between the U.S. and Iran — and thus the flow of traffic through the Strait of Hormuz — remains unclear, the global energy system may be at the beginning of the end of the crisis that started at the end of February.
This doesn’t mean an immediate return to the status quo from the beginning of the year, however, which saw a glut of fossil fuels depressing global prices. Several hundred million barrels of oil that would otherwise have been pumped in the Persian Gulf remain in the ground after producers shut in production, temporarily suspending operations to protect their infrastructure and minimize their exposure to the conflict. This has created what Morgan Stanley oil analyst Martijn Rats called an “air pocket” in the market — and anyone who’s watched a hospital drama knows how dangerous an air pocket can be.
As happened with Russia’s war against Ukraine, the consequences of the Hormuz closure cannot simply be undone. That leaves countries — especially poorer countries dependent on fossil fuel imports — with a stark choice about how to fuel their future economic growth. The crisis may have tipped the balance towards renewable and storage technology from China over oil and natural gas from the Persian Gulf, Russia, or the United States.
“There is a huge shift in total supply available in the fossil system,” Jeremy Wallace, a professor of China studies at Johns Hopkins University, told me. “I think the fossil system has been demonstrated to be vastly less reliable, riskier than it was seen to be in February.”
For gas specifically, recovering from Iranian attacks on Qatar could take years, not just the weeks and months necessary to clear the backlog in the Persian Gulf.
That will serve to reinforce China’s dominant position as a producer and exporter of solar panels, batteries, and electric vehicles. “It’s hard for me to not see this as a huge win for Chinese firms that produce these products, upstream and downstream in those supply chains — as well, arguably, for the Chinese government itself,” Wallace said.
There’s already been some institutional movement away from fossil fuel investments and towards clean energy as well. A Vietnamese conglomerate, for instance, has proposed scrapping a planned liquified natural gas terminal for a solar and renewables project, while the county has also signed a deal with Russia to build the region’s first operational nuclear plant. And even as electric vehicle sales in China have slowed down, the share price of the battery giant CATL has surged since the war began despite rising costs of metals due to disruptions of chemicals necessary for refining from the closure of the strait.
Kyle Chan, a fellow at the Brookings Institution who studies Chinese technology and economic policy, summed up the situation by calling the energy shock of the war “the best marketing program you could possibly imagine for China’s clean tech sector.”
It’s not just China’s technology that is likely to be more attractive in light of this latest energy crisis, but also its energy model, which fuses energy security and decreasing dependence on imported fossil fuel (thanks, in part, to domestic coal supplies and hydropower) with a vast buildout of renewables and nuclear energy.
“The way that China has weathered the Iran war energy shock so far has really validated its strategy of investing heavily in alternative energy,” Chan said.
Going forward, Asian countries will have to decide on future investments in energy infrastructure, especially the extent they want to build out infrastructure for importing and processing oil and especially liquefied natural gas.
While the United States, especially under Trump, is more than happy to sell LNG to any taker, the fact that oil and LNG are global markets could make countries leery of depending on it at all if it’s risky to supply and price shocks, even if U.S. exports are dramatically less likely to get bottled up in the Gulf of Mexico.
“It seems like once in 100-year storms happen every year. Now it feels like that in the fossil energy system,” Wallace told me. “We’ve been talking about the crises of the 1970s for 50 years afterwards. We don’t need to be talking about those now.”
The 1970s saw major investments in non-oil energy generation, especially nuclear power, in Japan and France and large scale investments in energy efficiency. Today, Wallace said, “the alternatives are much more attractive.”
“In the months to come, I think we will see a lot of bottom up industrialists and probably wealthy consumers in Southeast Asia and South Asia who are going to vote for energy security of their own as best they can,” he told me, pointing to the mass adoption of solar in Pakistan since 2022.
But Asian countries embracing renewables and storage will not have entirely freed themselves from geopolitics. While batteries, solar panels, and electric vehicles do not require a flow of fuel from abroad the same way oil and gas infrastructure does, China has shown itself to be perfectly willing to use economic leverage to achieve political ends.
Relations between China and Japan, the second largest Asian economy and a close American ally, quickly devolved into crisis following the ascent of Sanae Takaichi to Prime Minister of Japan in October, after the new leader suggested that if China were to blockade Taiwan, it would constitute “an existential threat.” China responded with an array of economic punishments, including discouraging Chinese tourism in Japan and restricting shipments of rare earths elements and magnets.
China’s economic coercion, Chan told me, “reminds everyone that while you can buy all this really affordable, highly scaled-up clean energy equipment, China has been able to and has been willing to leverage that supply chain dominance in certain ways. There’s a degree of trust that you can’t really make up for.”
Countries embracing Chinese energy technology will “always have to have a Chinese-hedging discount in the back of their minds,” he said.
On Breakthrough Energy Ventures’ quantum computing investment, plus more of the week’s biggest money moves.
It’s been a busy week for funding, with several of the most high-profile deals featured in our daily AM newsletter, including Slate Auto’s $650 million fundraise for its stripped-down electric truck and Rivian’s partnership with Redwood Materials to repurpose the electric automaker’s battery packs for grid-scale storage.
These are clearly companies with direct decarbonization implications, but one of the week’s other biggest announcements raises the question: Is this really climate tech? That would be quantum computing startup Sygaldry, which recently nabbed $139 million in a round led by Breakthrough Energy Ventures to build quantum AI infrastructure. Huh.
Elsewhere in the ecosystem, the climate connection is a little more straightforward, with new funding for advanced surface materials designed to improve insulation and fire-protection, capital for microgrids that can integrate a diverse mix of generation and storage assets, and federal support for next-generation geothermal tech.
Quantum computing offers a futuristic paradigm for high-powered information processing and problem solving. By leveraging the principles of quantum mechanics, these systems operate in fundamentally different ways than even today’s most advanced supercomputers, encoding information not as ones and zeros, but as quantum units called “qubits.” Naturally, there is significant interest in applying this novel tech — which today remains error-prone and not ready for prime time — to artificial intelligence, with the aim of exponentially accelerating certain training and inference workloads.
Perhaps less intuitively, however, these next-generation computers are now viewed, at least by one prominent venture capital firm, as a key climate technology.
This week, quantum computing startup Sygaldry raised a $139 million Series A round led by Bill Gates’ climate tech VC firm Breakthrough Energy Ventures to build “quantum-acclerated AI servers” for data centers, which could reduce the cost and power required to train and operate large models. “The AI industry is advancing faster than ever and needs a breakthrough in performance per watt,” Carmichael Roberts, Breakthrough Energy Ventures’ chief investment officer said in the press release. “Sygaldry’s vision for bringing quantum directly to the AI data center has the potential to deliver exactly that, bending the cost and energy curve at the moment it matters most."
Certainly Sygaldry’s ultra-high-powered computers could help lower the energy intensity of AI workloads, but that is no guarantee that it will reduce AI and data center emissions overall. As was widely discussed when the Chinese AI firm DeepSeek released its cheaper, more energy-efficient model early last year, efficiency gains could reduce emissions in the sector at large, but they are perhaps just as likely — or some argue even more likely — to drive greater proliferation of AI across a wide array of industries. This unfettered growth could offset efficiency gains entirely, leading to a net increase in AI power demand.
Buildings account for nearly 37% of domestic energy consumption, with heating and cooling representing the largest share of that load. But while energy efficiency strategies typically focus on upgrading insulation or adjusting the thermostat, there’s another approach — essentially painting the roof with sunlight-reflecting material — that has the potential to reduce AC demand and thus cut a building’s cooling-related energy use by up to 50%.
Just such a “paint” is one of the unique ceramic coatings developed by NanoTech Materials, which this week raised a $29.4 million Series A to scale its infrastructure materials business. Beyond roofing, the company also offers a fire-protective coating for wooden infrastructure such as utility poles, fences, highway retaining walls, and other transportation assets, as well as an insulative coating for high-heat industrial equipment such as pipes and storage tanks designed to slow heat loss and prevent burn risk.
“Today’s built environment demands materials that don’t just meet code, but can also outperform the extreme conditions we’re now facing,” said D. Kent Lance, a partner at HPI Real Estate Services & Investments, which led the Series A. Nanotech Materials currently operates a manufacturing facility in Texas and plans to use this new capital to further expand its operations as it conducts market research for its various product lines.
Interconnection delays aren’t just a data center problem. Industrial developers working on everything from real estate and electric vehicle charging to manufacturing and aviation are also struggling to get timely and reliable access to power when building or expanding their operations. Enter Critical Loop. This modular microgrid company is building battery energy storage systems that can integrate batteries of varying sizes and specifications with a variety of power sources, including onsite solar, diesel generators, and grid power.
This week, the startup announced a $26 million Series A round, bringing total funding to $49 million across all equity and debt financing. Critical Loop’s approach combines a software platform with proprietary hardware — what it calls a “combiner” — which reduces the need for the many custom components typically required to connect a diverse mix of batteries and generation sources. “There’s a lot of power problems that are not getting solved because of limitations on an understanding of how to integrate different systems at a site,” Critical Loop’s CEO Balachandar Ramamurthy, told me last month.
The company’s initial product is a modular single-megawatt battery system that can be transported in shipping containers for rapid deployment in capacity-constrained locations. To date, Critical Loop has deployed about 50 megawatt-hours of microgrid assets, with plans to scale to over 100 megawatt-hours by year’s end.
It’s been another exciting week for one of the few bipartisan bright spots in clean energy — geothermal development. My colleague Alexander C. Kaufman reported in this morning’s AM newsletter that the AI-native geothermal company Zanskar secured $40 million through one of the first development capital facilities for early-stage geothermal development, and now the technology has secured fresh capital from the fickle U.S. Department of Energy. Today, the DOE announced a $14 million grant to support an enhanced geothermal demonstration project in Pennsylvania that will convert an old shale gas well into a geothermal pilot plant.
Conventional geothermal systems depend on a highly specific set of subsurface conditions to be commercially viable, which includes naturally occurring underground reservoirs where fluid flows among hot rocks. By contrast, developers of enhanced geothermal systems effectively engineer their own reservoirs, hydraulically fracturing rock formations and then circulating water through those man-made fractures to extract heat that’s then used to generate electricity. A number of well-funded startups are advancing this approach using drilling techniques adapted from the oil and gas industry, such as Fervo Energy — which has an agreement with Google to supply electricity for its data centers — and Sage Geosystems, which has a similar tie-up with Meta.
“As the first enhanced geothermal systems demonstration site located in the eastern United States, this project offers an important opportunity to assess the ability of such systems to deliver reliable, affordable geothermal electricity to Americans nationwide,” Kyle Haustveit, the Assistant Secretary of the Hydrocarbons and Geothermal Energy Office, said in the DOE release. If successful, the Energy Department says the project could provide a replicable model for scaling the deployment of enhanced geothermal systems across a broader range of geographies.
This week, the nonprofit XPRIZE organization announced that it’s partnering with Amazon to launch a new global competition focused on critical mineral circularity — redesigning how minerals such as lithium, cobalt, and nickel are recovered, processed, and reused. Demand for these minerals is projected to quadruple by 2040, but their supply chains remain largely concentrated in China, especially across refining, processing, and battery manufacturing.
The competition aims to catalyze breakthroughs in mineral recovery and recycling, materials solutions, and lower-impact extraction methods. It’s not yet open to submissions as organizers are still seeking philanthropic and corporate funding before entrepreneurs, startups, and research teams can submit their ideas for consideration. XPRIZE has been running challenges for three decades now, with past competitions revolving around carbon removal, adult literacy, and lunar exploration.
Current conditions: A broad swath of the United States stretching from South Texas to Chicago is being bombarded by the Central U.S. with severe storms and more than two dozen tornadoes so far • The thunderstorms pummeling Puerto Rico and the U.S. Virgin Islands are expected to stretch into the weekend • Kigali is also in the midst of a days-long stretch of heavy storms, testing the Rwandan capital’s recent wetland overhaul.
SunZia Wind, the largest renewable energy project of its kind ever built in the U.S., has started generating electricity, nearly capping off a two-decade effort to supply Californians with wind power generated in New Mexico. The developer has begun testing the project’s 916 turbines ahead of planned full-scale commercial operations later this quarter, unnamed sources told E&E News. The project includes 3.5 gigawatts of wind and 550 miles of transmission line to funnel the electricity west from the desert state to the coast. “The impact is already evident,” the newswire wrote. “California broke its record for wind generation eight times in the last four weeks.”
When Heatmap’s Robinson Meyer visited SunZia’s construction site in August 2024, he observed that, once it started running at full blast, the project would “generate roughly 1% of the country’s electricity needs.” Its success in the face of the Trump administration’s attacks on wind could “lay the model” for a new paradigm in which “clean energy buildings and environmental protectors work together to find the best solution for the environment and the climate,” Rob wrote. “We will need many more success stories like it if America is to meet its climate goals — 99 more, to be exact.”
The U.S. Senate voted 50-49 on Thursday to repeal a mining ban on land near the Minnesota’s Boundary Waters Canoe Area Wilderness, declaring what Heatmap’s Jeva Lange called “open season” on public lands. In what the public lands news site Public Domain called “an unprecedented use of the Congressional Review Act,” the vote slashes protections for the iconic nature preserve. Inspiring even fiercer political pushback is the fact that Republicans championed the effort largely to benefit an overseas corporation: Twin Metals Minnesota, a subsidiary of the Chilean mining conglomerate Antofagasta, which has for years sought to establish a copper-nickel mine on national forest land near the wilderness area. “The Boundary Waters belong to everyone,” Julie Goodwin, a senior attorney at Earthjustice, said in a statement. “They should be protected and enjoyed by all, not jeopardized to benefit a wealthy foreign company.”
At the same time, global demand for both nickel and copper are surging — and a successful effort to decarbonize the world economy through greater electrification will require a lot more of both metals.
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The good news: The Department of Energy is allowing the Direct Air Capture hub program started under the Biden administration to move forward. In documents submitted to Congress this week, the agency listed as approved the up to $1.2 billion the program awarded to two projects: Occidental Petroleum’s South Texas DAC Hub, and Climeworks and Heirloom’s joint Project Cypress in Louisiana. As Heatmap’s Emily Pontecorvo noted: “This fate was far from certain.” After the Energy Department cut funding for 10 of the original 21 projects last fall, a leaked list of projects suggested the Louisiana and Texas hubs would be targeted in a second wave of rescissions. The bad news: Last week, Rob had a scoop that Microsoft — whose carbon removal buying made up roughly 80% of the industry — was pausing its purchases. And as he wrote yesterday, even if it’s just temporary, the pause will ripple through the nascent market.
Other technologies that once seemed like science fiction are, in fact, moving forward. In an exclusive for Heatmap, I reported that Clean Core Thorium Energy, a Chicago-based company designing thorium fuel bundles that works in existing reactors, inked a deal to manufacture its first four units. In addition to assembling the bundles, the Canadian National Laboratories will supply the small amount of a special kind of uranium fuel needed to be blended into Clean Core’s mix and that serves as a spark plug for the reaction.
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Last October, the Energy Department asked the Federal Energy Regulatory Commission to set rules for patching data centers, advanced factories, and other large loads onto the grid. The move, as Utility Dive reported at the time, sparked controversy over whether it represented a Washington power grab given that the landmark Federal Power Act gives states jurisdiction over retail electricity interconnections. Now FERC has said it plans to respond. On Thursday, Robin Millican, a researcher at Columbia University’s Center on Global Energy Policy, posted on X that FERC announced a notice of intent to act on the Energy Department’s request, with a ruling expected in June. “Good,” she wrote. “Ensuring interconnection costs from data centers, advanced manufacturing, and big electrification projects aren’t passed to retail customers is overdue.”
Back in January, I told you that two geothermal startups raised a combined $212 million: Zanskar, which uses artificial intelligence to hunt down previously undetected conventional geothermal resources underground; and Sage Geosystems, a next-generation startup using fracking technology to drill for geothermal heat in places that conventional resources can’t tap. This week we saw two geothermal companies once again net a nine-digit number. Once again, Zanskar — considered by experts Heatmap surveyed to be one of the most promising climate-tech companies in the game right now for a reason, after all — announced the closing of another $40 million fundraise. Just Capital and Spring Lane Capital led the round, with an additional investment from Tierra Adentro Growth Capital. Zanskar said the round was a development capital facility, a type of deal that usually involves equity or debt to fund a company’s growth. It is “among the first ever structured for early-stage geothermal development, drawing on the best practices from the renewables and natural resource sectors,” the company said Thursday in a press release. The financing will help establish a revolving line of credit “designed to accelerate project development.”
On Wednesday, another competitor in the next-generation geothermal space, Mazama Energy, pulled in a fresh round of capital. The Frisco, Texas-based company, which last year boasted a system that reached hotter temperatures than any other geothermal company, just raised $100 million, according to Axios.

San Diego, once the poster child for a drought-parched Southern Californian city, is now looking to become a water exporter, The Wall Street Journal reported. North America’s largest desalination plant is producing so much freshwater for the San Diego County Water Authority that the city is working on a deal to sell millions of gallons to Arizona and Nevada. The Claude “Bud” Lewis Carlsbad Desalination Plant, which opened in 2015 and is owned by an infrastructure investment firm, may produce more expensive than average water, but “it is important to note that it is more reliable than other sources,” Keith R. Solar, a water attorney from the seaside neighborhood of Point Loma, wrote in the Voice of San Diego last year. “Its value as insurance against disruption of supplies from other sources makes it a critical part of our future.”