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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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PJM is back open for business, but the new generation applying to interconnect is primarily natural gas.
America’s largest electricity market is looking at hooking up new power generation again, and a lot of it is natural gas.
PJM stopped evaluating new generation in 2022, when the backlog of projects awaiting interconnection studies stood at 2,664, of which 1,972 — representing 107 gigawatts, about two-thirds of the total — were renewables.
“They’ve been spending these past four years working through the backlog, studying everything that’s in there, and that process is up,” Jon Gordon, senior director at Advanced Energy United, told me.
The electricity market announced last August that applications for the first cycle of interconnection studies under a new, reformed process would be due this week. Some 811 projects with a combined capacity of 220 gigawatts made the Monday deadline, PJM said Wednesday. This time around, the mix looks a little different.
While solar, storage, and solar-and-storage projects make up more than half the queue by number (536 in total), by capacity, nearly half is natural gas, with 106 gigawatts out of around 220 gigawatts total.
For years, some of the strongest advocates of interconnection queue reform at PJM have been advocates for renewables. With the wait for interconnection stretching up to eight years, solar and wind projects in particular found themselves in trouble. Even as the cost of solar had been dropping dramatically, higher inflation and higher interest rates following the COVID pandemic and Russian invasion of Ukraine made developing renewables more expensive — and that was before Donald Trump regained the White House and declared war on clean energy.
Since 2020, PJM said in a March blog post, 103 gigawatts of interconnection agreements resulted in just 23 gigawatts of new generation being added to the grid. Three-quarters of projects that PJM studied withdrew from the process at some point before sending power to the grid.
PJM spent the past four years reviewing old projects and developing a process designed to get interconnection service agreements done in two years at most. The round of projects submitted up through this week will not be evaluated on the “first-come, first-served” model that had bedeviled the previous system. Instead, PJM has adopted a “first-ready, first-served approach,” which the organization says will mean “prioritizing projects that are more advanced and better positioned to move forward.”
The reformed queue couldn’t come soon enough. Over the past four years, PJM has become desperate for more power to serve exploding data center demand and help alleviate high prices.
Since 2020, electricity prices in PJM have risen almost 50%, from 12.6 cents per kilowatt-hour to 18.7 cents per kilowatt-hour, according to data from Heatmap and MIT’s Electricity Price Hub. Typical electricity bills have risen from around $128 a month to about $161.
“Current projections show a potential capacity shortfall of 50 GW to 60 GW in the next decade, primarily driven by large load growth,” PJM said last month. For reference, a gigawatt is enough to power a city of around 800,000 homes. PJM’s existing installed capacity is around 180 gigawatts.
When I asked Gordon about the large presence of natural gas in the new queue, he pointed to data centers, which “have become a massive sea change to the whole landscape of energy.” That goes especially for the scale of planned facilities, such as a planned 1.4-gigawatt data center campus on a 700-acre footprint in Cumberland County, Pennsylvania.
“Now they're talking gigawatt-size data centers that would require, potentially, an enormous natural gas plant — maybe more than one,” Gordon said. Getting the requisite financing and permitting for renewable and storage resources to power such a large-scale project would be “enormously challenging,” he added. Meanwhile, “natural gas has risen to the fore here, and it’s getting a lot of tailwind from the Trump administration.”
(Something else eagle-eyed readers may have spotted in the numbers on new planned projects: their average size is much bigger than those in the queue as of 2022. The new batch comes in at an average size of nearly 272 megawatts each, compared to around 60 megawatts for the old one. That holds especially for solar, storage, and solar-plus-storage projects, which clock in at nearly 198 megawatts on average, compared to just 54 in 2022.)
Earlier this year, governors of states in the PJM region, led by Pennsylvania’s Josh Shapiro, and the White House agreed on a $15 billion special auction for procuring new generation in PJM. That came after PJM’s most recent capacity auction — in which generators bid to be compensated for their ability to stay on the grid in times of need — failed to meet even PJM’s preferred reliability margin.
Pressure continued to mount on the electricity market following the capacity auction, as federal regulators took it to task for its failure to get more generation online. Two weeks ago, PJM put some meat on the bones of the White House agreement by proposing a two-stage process, whereby power customers would directly contract for new generation with power supplies starting in September and PJM would facilitate an auction for whatever was still necessary to meet its capacity increase goals by March of next year.
The plan met a cool reception in Washington, where Federal Energy Regulatory Commission Chair Laura Swett said she was “a bit perplexed” by the PJM proposal, adding it didn’t meet the timeline set out by the White House and the PJM governors to hold an auction this year
While PJM may be able to reform its own processes or come up with special procurements, there’s still the same old issues that have bedeviled energy buildouts everywhere.
Projects that have already been approved are facing “hurdles such as state permitting and supply chain backlogs,” PJM said Wednesday.
That being said, renewables and storage can still benefit from an improved interconnection process, Gordon told me. “Renewables would have always benefited, and still will benefit from improved interconnection,” Gordon told me. That’s largely because renewable projects tend to be smaller on a per-project basis than gas, let alone nuclear, and are more plentiful in number, and therefore stand to benefit disproportionately from faster reviews.
The real tragedy, Gordon said, is that more renewables couldn’t come online when the political and economic winds were blowing in their favor. Projects that were submitted to the queue before its closure in 2022 were “probably very economic back then,” he told me. “They died on the vine as they waited in the queue.”
Current conditions: The Gulf Coast states are bracing for a series of midweek thunderstorms • Temperatures are rocketing up near 100 degrees Fahrenheit in Lahore, Pakistan • San Juan, Puerto Rico, is facing days of severe thunderstorms.
Compass Datacenters is quitting a yearslong bid to build a key part of a 2,100-acre data center corridor in northern Virginia amid mounting pushback from neighbors, marking one of the highest profile examples yet of political opposition killing off a major server farm. The company, backed by the private equity giant Brookfield Asset Management, has gunned for Prince William County’s approval to turn more than 800 acres into a portion of the data center buildout. But after spending tens of millions of dollars on the effort, the firm decided that political resistance to providing tax breaks had created what Bloomberg described Wednesday as “too many roadblocks,” prompting a withdrawal.
The data center backlash, as Heatmap’s Jael Holzman wrote in the fall, is “swallowing American politics.” Polling from Heatmap Pro has shown that public resentment toward server farms they perceive as driving up electricity bills, sucking up too much water, or supporting software that threatens human jobs is rapidly growing. Data centers, as Jael wrote last week, are now more controversial than wind farms.
Nuclear startups taking part in the Department of Energy’s reactor pilot program are approaching the agency’s July 4 deadline to split their first atoms, and companies are making deals left and right for new projects. But just four firms have so far secured commercial offtakers, announced project-specific financing, and locked down contracts with suppliers and construction partners. That’s according to new data from a report by the policy advocate Third Way, shared exclusively with me for this newsletter. TerraPower’s nuclear project in Kemmerer, Wyoming, which broke ground this month, is in the lead, with the most advanced application before the Nuclear Regulatory Commission. Amazon-backed X-energy has two projects that have achieved all three preliminary milestones. Holtec International’s small modular reactor project in Michigan and GE Vernova Hitachi Nuclear Energy’s debut unit at the Tennessee Valley Authority — each of which recently received $400 million in federal funding, as I previously reported — are close behind.
Among the report’s other takeaways: Federal policy is “too often rewarding hype instead of commercialization readiness,” and the U.S. needs to winnow down the technologies on offer.
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The Federal Emergency Management Agency has officially entered what CBS News called “a financial danger zone” that threatens to limit spending to only the most urgent life-saving needs. The status, called Imminent Needs Funding, is triggered when FEMA’s Disaster Relief Fund drops below $3 billion. The depletion is a symptom of the partial government shutdown of FEMA’s parent agency, the Department of Homeland Security, whose funding has become hotly political over the hardline actions by Immigration and Customs Enforcement. But the timing couldn’t be worse: Hurricane season is about a month away. “Disasters are unpredictable. They’re very costly. We don’t know what could happen between now and June 1,” FEMA Associate Administrator Victoria Barton told the network.
This was all predictable. Back in February, Heatmap’s Jeva Lange warned that the DHS shutdown would “starve local disaster response.”
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The U.S. is racing to get new nuclear projects off the ground. But it’s not yet clear where all the new reactor fuel is going to come from, especially once federal law fully bans all imports of Russian uranium in 2028. A new uranium mining project has started up operations this week in Wyoming’s Shirley Basin. The reactivated mine was previously considered the birthplace of in-situ recovery mining, a more eco-friendly method of extraction that involves injecting a solution into rock that dissolves minerals, then pumping that fluid to the surface for collection. The developer, Ur-Energy, said it’s returning to operations to power at least the next nine years of uranium demand in the U.S.
The milestone at the uranium mine comes as global mining deals reached a new high in the first three months of this year. Global law firm White & Case LLP recorded 121 mergers and acquisitions in the sector in the first quarter, up from 117 a year earlier and 102 in 2024, according to Mining.com. It’s the strongest first quarter since 2023. “The math is unforgiving,” the Breakthrough Institute’s Seaver Wang and Peter Cook wrote in an Ideas essay for Heatmap this week. “We need more minerals, and we need them soon.”

Another week, another new full-scale nuclear reactor has come online in China. On Wednesday, World Nuclear News reported that Unit 1 of the San’ao nuclear station in eastern Zhejiang province has entered commercial operation. The reactor is the first of six Hualong One reactors planned for the site. The Hualong One is China’s leading indigenous reactor design, borrowing heavily from the Chinese version of the Westinghouse AP1000, America’s leading reactor.
South Africa, meanwhile, is making a bid to lure engineers working abroad to come home to help the country build up its own nuclear sector once again. The plan, detailed by Semafor, “aims to attract skilled migrants and South African expatriates, especially those working in the United Arab Emirates,” which hired large numbers of local engineers during the buildout of the Gulf nation’s debut Barakah nuclear plant over the past decade.
Even before China made a big gamble in recent months on green hydrogen to ease the effects of the Iran War’s hydrocarbon shock, the country’s electrolyzer manufacturers were already starting to dominate the industry. Now the first Chinese electrolyzer manufactured in Europe is due to be assembled in the coming weeks. RCT GH Hydrogen, a joint venture between the Jiangsu-based electrolyzer maker Guofu and the German technology company RCT Group, is on track to roll out its first unit in June, Hydrogen Insight reported Wednesday.
Representatives Jared Huffman and Jamie Raskin announced an investigation into the $1 billion offshore wind deal with the Trump administration.
Two House Democrats are going after TotalEnergies after the company ignored an earlier request to defend its $1 billion settlement with the Trump administration to walk away from offshore wind.
Jared Huffman, the ranking member of the House Natural Resources Committee from California, and Jamie Raskin, the ranking member of the House Judiciary Committee from Maryland, sent a letter on Wednesday informing Total’s CEO Patrick Pouyanné that they have opened a formal investigation into the company.
“We’re going to get every document, every email, every last receipt on this deal, and every person who had a hand in this is going to answer for it,” Huffman said in a press release. “What I have to say to TotalEnergies is this: Consider yourself on notice, we’re coming for you.”
The move comes just a day after the Trump administration announced two additional identical settlements resulting in the cancellation of two more offshore wind leases.
The letter states that Total’s March 23 settlement with the Interior Department was unlawful in “at least four separate ways.” It demands that Total preserve all records related to the deal and requests that it put the $928 million it was granted by the settlement into escrow until the investigation concludes.
Huffman and Raskin first reached out to the Interior Department and Total on April 6 requesting documents and communications between the two parties related to the deal by April 20. Neither party obliged. Shortly before the deadline, however, the Interior Department published the settlement agreements it signed with Total. The settlements “confirm and surpass our worst fears of what has taken place,” the two representatives wrote on Wednesday.
The settlements state that the agency would have ordered Total to suspend operations on the leases due to national security issues. This “appears to have been a fabricated justification for canceling the leases,” the letter says, citing a discrepancy between when the settlements suggest that the company had reached an agreement with the Trump administration — November 18 — and when the earliest reports of anyone reviewing the national security concerns occurred — November 26.
“That timeline raises the troubling possibility that the national security assessment was not merely pretextual, but also that TotalEnergies may have negotiated the final settlement agreement with full knowledge that the rationale for canceling the leases was false,” Huffman and Raskin write. The fact that Pouyanné has stated publicly multiple times that the company came to the Interior Department with the idea for the settlement supports that conclusion, they add.
Putting the timeline of national security concerns aside, the settlement disregards the law governing offshore wind leases, Huffman and Raskin argue. The Outer Continental Shelf Lands Act says that when the government cancels a lease that does not yet have an operating project on it, the company is entitled to the “fair value” of the lease at the date of cancellation. The nearly $1 billion figure — which is the amount the company paid for the two leases in 2022 — is “almost certainly a significant overpayment even under the most favorable reading of the statute,” the lawmakers write.
The letter also questions the use of the Department of Justice’s Judgment Fund, a reserve of public money set aside to pay for agency settlements. On one hand, Interior Secretary Doug Burgum recently characterized the payment as a “refund” in testimony before Congress — a type of payment that the Judgment Fund is not authorized to make. On the other hand, even if it was technically a settlement, it doesn’t meet the Judgement Fund’s standard of “a genuine contested dispute over liability or amount,” Huffman and Raskin write. The Interior Department never issued a stop work order to Total. Neither of the company’s projects had even started construction yet.
If the settlement is allowed to go through, the lawmakers warn, any future U.S. administration could repeat the formula to enact their own agenda. “The only requirements would be a hypothetical threat, a side agreement, and a check drawn from a permanent, uncapped federal account that Congress never authorized for this purpose,” they write.
Lastly, Huffman and Raskin accuse the Trump administration and Total of sticking an unlawful clause in the settlements that declare the agreements “not judicially reviewable.” They assert that only Congress has the power to restrict judicial review. Their letter declares that the provision “accomplishes nothing legally,” and characterizes it as evidence that the parties knew the deal would not survive scrutiny.
In addition to preserving records and putting the funds in escrow, the letter to Total again demands a list of documents related to the deal, providing a new deadline of May 13. We’ll see if the company feels compelled to comply. Huffman and Raskin would need the support of the full House to find Total in contempt of Congress, and it’s not clear they would have the numbers.