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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.
Read more about the Inflation Reduction Act:
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The new vehicle — with a price tag just shy of $30,000, all in — represents the storied U.S. automaker’s big swing at winning entry-level buyers.
Ford’s electric moonshot, the mid-size pickup truck that would get it back into the EV race, finally has a name: Fathom.
The Detroit giant announced the name of its long-anticipated, highly mysterious vehicle on Thursday, alongside its price and some of its specs. The Ford Fathom will cost $28,350, not including delivery and destination fees that take its price right up to the 30-grand mark — $29,945, to be precise. Ford says it will start taking reservations early next year and deliver the first pickups later in 2027.
We don’t yet know the battery range or, crucially, what it’ll look like, as Ford is holding back the visual reveal. What we can say is that, as a mid-size pickup, the Fathom should be around the size of the gas-powered Ford Maverick, which has a near-identical starting price. Without getting into dimensions, Ford promises it will have more passenger volume than Toyota’s ubiquitous RAV4 SUV, with a frunk and a truck bed to boot.
Ford says every Fathom will be BlueCruise-capable, referencing the company’s hand-free driving assistant for highway travel. Fathom will also feature bi-directional power capability, enabling the battery to double as home energy storage, as well as embedded Apple Maps on its large touchscreen. Importantly, it will retain compatibility with Apple CarPlay and Android Auto, which has become a dealbreak for many drivers.
Fathom will be the first EV produced on Ford’s Universal EV Platform, the technology setup that has been under development at the company’s skunkworks operation in Long Beach, California. I visited there this spring to see the team that was, far from the glare of the suits in Detroit, trying to reinvent the company’s EV manufacturing strategies so it could make better and more affordable electric cars. Even then, though, I couldn’t get a look at the Fathom — or any other car designs that may or may not be under way there, as they were all still under wraps.
The skunkworks project is all about process. Ford was losing billions on its previous generation of EVs, led by the Ford F-150 Lightning and Mustang Mach-E, despite the relatively high sticker price of those cars. Engineers tried to mimic some of the stripped-down, iterative strategies of smaller firms and startups — such as stripping miles of wiring out of the vehicles — to work faster and simplify manufacturing, thereby cutting costs.
That work has allowed Ford to start the Fathom at effectively $30,000, placing it smack within the range of America’s most affordable electric vehicles. Its most obvious competitor would be the Slate EV truck, which has just begun to take reservations. Slate starts at about $25,000, but that price gets you a bare-bones pickup with roll-up windows and a plain gray exterior. Add enough a la carte features to make the truck technologically competitive with something like the Fathom and it, too, would cost around $30,000.
At the price, the Ford Fathom is also directly competitive with entry-level EVs like the new Chevy Bolt and Nissan Leaf. But as a mid-sized truck, Fathom would be more spacious and practical than a vehicle like a Bolt, while coming in well below the $35,000 starting cost of a bigger crossover like the Chevy Equinox EV.
Ford, in its announcement, ruminated on the meanings behind the “Fathom” moniker. The company wanted its crucial new EV to have a name, not an alphanumeric code like the Ford F-150. Fathom was chosen because of its twin meanings: the classical unit of measure for water depth, and the verb meaning to deeply and fully understand something.
The implication is that the Fathom EV is meant to comprehend the customer and what they want out of an electric truck. How Ford’s pickup measures up to their aspirations depends greatly on details about this vehicle that are not yet known. But just putting out a battery-powered pickup truck for under $30,000 is a great start.
Current conditions: The heat dome in the American Southwest is worsening, with temperatures in Phoenix set to climb as high as 110 degrees Fahrenheit • The wildfires in Greece have killed at least five people as thermometers in Athens near the triple digits • Sri Lanka’s sprawling capital of Colombo is in the midst of a week of intense thunderstorms.
The Department of Defense halted reviews of onshore wind projects in May on national security grounds, a move that my colleague Jael Holzman described at the time as “extrajudicial” and that would ultimately “murder an American industry.” Now the judiciary is getting involved. On Tuesday, U.S. District Judge Karin Immergut, a Trump appointee, indicated that she would likely find in favor of a coalition of renewable energy groups that sued the Trump administration to restart reviews. At the start of a two-hour hearing, Courthouse News Service reported from the federal courthouse in Portland, Oregon, Immergut said there was “strong evidence the government had violated statutory and regulatory deadlines” when the Pentagon stopped carrying out routine reviews needed to progress federal permits for wind turbines to the Federal Aviation Administration.

The Trump administration is preparing to impose new tariffs and minimum import prices on polysilicon in a bid to prop up a domestic supply chain for the primary ingredient in semiconductors and solar panels. The decision, due out after the market closes today, will set a tariff of at least 15% on imported polysilicon and set baseline prices for each component in the supply chain, from the raw material derived from purified quartz to solar wafers, cells, and modules, sources familiar with talks told me, confirming broad details first reported by Reuters and Bloomberg. The Department of Commerce plans to delay implementation to allow domestic manufacturers that rely on imported components time to adjust, and provide offsets to companies that make major investments in the U.S. The policy will serve as a key lifeline to solar manufacturers, who lost one of their main incentives to buy made-in-America panels when the investment and production tax credits for solar effectively ended last month. But industry sources told me that the new trade restrictions would likely fall short of incentivizing new manufacturing, and would require more support on the demand side. The dynamic mirrors what my colleague Matthew Zeitlin called the “paradox of Trump’s critical mineral crusade,” whereby the administration pulled out all the stops to boost mining of rare earths and lithium while eliminating the landmark electric vehicle tax credit that ensured a domestic market for those metals.
It’s hardly the only protectionism the Commerce Department is attempting this month. On Thursday, the agency plans to publish a temporary final rule that would block exports of battery scraps and tungsten waste without a special waiver from the Bureau of Industry and Security. Producers of the materials, E&E News reported, would be required to sell in the U.S. for one year. The move comes a week after President Donald Trump signed a memo blocking exports of mineral-rich waste as the White House seeks to shore up supplies of metals for weapons production. Tungsten, as the Bloomberg “Odd Lots” podcast explained nicely in a recent episode, has a very high melting point, making it ideal for artillery and ammunition. While it’s typically in demand in low amounts during peace time, soaring interest is a sign of widening global conflicts.
For retail investors, Oklo emerged as the face of the small modular reactor industry in 2024 after the Silicon Valley nuclear darling debuted on the stock market. But the company hadn’t yet split atoms. Last night, the company’s low-power test reactor in Texas sustained a reaction for the first time. The milestone makes Oklo the fifth company in the Department of Energy’s Reactor Pilot Program to achieve criticality, but the first to do so on private land. Oklo boasted that the company had erected the facility at a previously undeveloped greenfield site in less than a year, demonstrating that “American nuclear deployment timelines can be measured in months rather than years,” the company said in a press release.
The move comes five months after the Nuclear Regulatory Commission, which notoriously rejected Oklo’s first attempt at gaining approval for its power plant reactors, approved the company’s plans to produce medical isotopes from low-powered reactors, as I exclusively reported in this newsletter at the time.
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Two House Democrats formally referred Secretary of Energy Chris Wright to the Department of Justice for potential prosecution, accusing him of lying to Congress when asked whether the agency canceled green grants for partisan reasons. In a letter published Wednesday in The Hill, Representatives Zoe Lofgren of California and Gabe Amo of Rhode Island, alleged that Wright lied when he testified his blocking of billions in climate spending had nothing to do with the money going to states that voted for Democrat Kamala Harris in the 2024 election. In a federal lawsuit related to the same award terminations, Energy Department lawyers admitted that “the inclusion of grants in the October notice tranche was based solely on the political identity of the grant recipient’s state” Wright previously testified that politics had no role in the decisions. “Secretary Wright lied to the Committee with his statements, which sought to prevent us from learning the truth: that the October award terminations were an act of political retaliation,” Lofgren and Amo wrote in the letter, addressed to acting Attorney General Todd Blanche. “In doing so, he violated 18 USC §1001, which bars individuals from making ‘any materially false, fictitious, or fraudulent statement or representation’ to Congress. We have no choice but to refer Secretary Wright to the Department of Justice for potential prosecution in this matter.”
In 1978, the U.S. used millions more tons of coal than today. Yet miners in Appalachia are facing rates of pneumoconiosis — the incurable, fatal disease known as black lung — at exactly the same levels today. That’s the finding of new data published Wednesday in the American Journal of Respiratory and Critical Care Medicine. Miners in Kentucky, Virginia, and West Virginia who had spent at least 25 years working underground had by far the worst rates, with one in three testing positive in X-rays conducted by the National Institute for Occupational Safety and Health, a federal agency. “I’m disgusted,” Scott Laney, a NIOSH research epidemiologist who is the lead author of the research letter, told NPR. “This is not going to get better because of all the disease that’s already in the pipeline. These guys are being treated like disposable widgets, not human beings. … We’re watching them die right before our eyes.”
Your humble correspondent is due for a series of flights this afternoon. I lose little sleep over my personal carbon footprint; I don’t find it a useful metric, and even if I did, I live in New York City, so my family’s life in dense housing and reliance on public transit already places me well below most Americans. But I can’t help but think of it when I’m riding multiple planes in one day. Which makes this new Bloomberg feature so exciting. In Brazil’s Minas Gerais state, more than 200 researchers are working to commercialize jet fuel made from the oil-rich fruit of the macauba palm tree. Across 356,000 acres, the Abu Dhabi-based biofuels producer Acelen Renováveis plans to start processing macauba oil as part of a $3 billion project. The effort is meant to help the push to reduce airlines’ carbon intensity, but — as with biofuels in general — it’s worth considering the climate benefits with healthy doses of skepticism until detailed analyses come out.
Rob talks “tough tech” with Engine Ventures’ Katie Rae.
At this point, when you hear “venture capitalist,” you probably think of … software. Or artificial intelligence. Or cryptocurrency.
The Engine Ventures, which spun out of MIT a few years ago, is different. It tries to fund what it calls “tough tech,” a somewhat nebulous category that includes companies working in energy, decarbonization, health, and infrastructure. As such, it’s backed some of the most interesting “climate tech” companies in business today, such as Form Energy, Commonwealth Fusion.
On this episode of Shift Key, Rob chats with Katie Rae, the CEO and managing partner of Engine Ventures. They chat about what’s missing from America’s innovation ecosystem, how close fusion is to succeeding, and whether AI is a bubble (whatever that might mean).
Shift Key is hosted by Robinson Meyer, the founding executive editor of Heatmap News.
Subscribe to “Shift Key” and find this episode on Apple Podcasts, Spotify, Amazon, or wherever you get your podcasts.
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Here is an excerpt from their conversation:
Robinson Meyer: So this category of technologies, you guys call it tough tech. Sometimes you hear deep tech. What is different about investing in it from, let’s say, the classic VC playbook? And how is the engine ventures like built for that? What do you even kind of consider under tough tech, let’s say?
Katie Rae: Yeah, such a great question. First of all, this is the original form of venture capital, right? Which is that you are investing into things that have substantial intellectual property that took probably a long time to develop in academic or national labs and that are true breakthroughs. So a substantial leap forward in how we know things to work, which then can develop entire industries. Right. This is a very pure sense of venture capital. Over the years, you, in the generation you come from, think of it as software investing, where there’s very little technical risk and it’s all market risk.
So what tough tech is, is that you are taking on, I wouldn’t say in general scientific risk, but you are taking on the engineering risk of building something of physical instantiation. And that kind of risk is very different than software marketing risk. But it doesn’t mean it’s different forms of venture capital. One is taking the risk that a thousand other startups could do exactly the same thing and you’re going to be the one to break through and win. And the kind of venture capital in tough tech is that you really do understand the engineering and how to scale it up and how to get it to market and partner. But it is that engineering risk phase that we’ll call tough tech.
And that is more capital intensive in the beginning because it’s physical. But maybe not more capital intensive over time, but they’re just different forms of venture risk. One is you’re competing with a thousand people. And the other is there are probably one or two teams in the world with the knowledge base and ability to build this thing. And so your likelihood to win if you can gather the capital and the people and the expertise is actually pretty high, but very few people could make that happen. So that’s why a place like MIT, where you have this incredible group of humans who know how to collaborate globally on the cutting edge, is an incredible place to start something like the Engine Ventures, where you have a higher likelihood of being able to form these teams and get them out to market, and therefore a higher likelihood to win.
You can find a full transcript of the episode here.
Mentioned:
From Heatmap: Commonwealth Fusion Systems Wins Over New Class of Investors With $1 Billion Raise
Previously on Shift Key: Why John Arnold Is ‘Very Optimistic’ Permitting Reform Will Pass This Year
This episode of Shift Key is sponsored by ...
Discover the Yale Clean and Equitable Energy Development online certificate program at the Yale Center for Business and the Environment. In this fully online, 5-month program, you’ll learn from leading experts, develop practical skills, and grow a powerful network. Visit cbey.yale.edu to learn more and apply.
Music for Shift Key is by Adam Kromelow.