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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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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.
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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.