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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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‘Our entire company was built for this purpose.’
After decades of stagnation, the nuclear industry has drummed up all kinds of ideas meant to revive the prospects for building reactors in the United States. Make the reactors smaller. Micro, even! Cool them with helium or molten salt instead of water. Invite the Koreans or Canadians to come teach us how to construct atomic power stations again.
Yet the startup bold enough to name itself The Nuclear Company launched in 2024 on a simpler thesis: Just go with the large-scale reactors we have built before, and construct them in bulk to bring down costs.
Essentially, do what the Chinese did.
While the U.S. struggled for 15 years to complete its first two Westinghouse AP1000s, the 1.1-gigawatt units designed at the dawn of this century to be America’s flagship nuclear technology, China built four in the same time period. Beijing then reverse-engineered the technology to make its own version with an entirely domestic supply chain. China now has 10 operating Hualong One reactors and at least 37 more on the way. The U.S. ultimately completed its first two AP1000s at Southern Company’s Alvin W. Vogtle Electric Generating Plant in eastern Georgia right around the same time.
The Nuclear Company was formed by hiring former managers who oversaw the Georgia project. Despite the Trump administration’s pledge to finance construction of at least 10 more large nuclear reactors, the only projects that have broken ground are new, first-of-a-kind small modular reactors that skeptics fear will face the same billion-dollar cost overruns that the AP1000s faced at Plant Vogtle — but without the same output of electricity to balance out the expenses.
On Wednesday morning, The Nuclear Company announced its most significant attempt at a Chinese-scale buildout yet. The firm unveiled plans to build 6.6 gigawatts of new, large-scale reactors at a greenfield site in Kentucky, along the Ohio River. Dubbed Prosperity One, the project would be located in Lewis County, on property once assembled for a coal-fired station that was later abandoned. The site sits half a mile from a 765-kilovolt transmission line that connects to PJM Interconnection, the nation’s second-largest and arguably most stressed grid system.
“Our entire company was built for this purpose,” Joe Klecha, The Nuclear Company’s chief nuclear officer and a former manager on the Plant Vogtle buildout, told me. “We recognize that this is different and unique in our country. We believe it’s very much needed.”
The project will begin with two reactors at a time; the Kentucky site has room for up to six. The Nuclear Company is already negotiating potential offtake agreements with electricity buyers to help finance construction, and it expects deals by next year. The company told me it has not yet decided whether it will run the Prosperity One as an independent power provider or sell the facility to a utility or another plant operator. “We are preserving all options and will make that decision as we pull the other partners onboard formally,” Klecha said.
Since its inception, The Nuclear Company has focused on the AP1000 as the most promising design in the U.S. That’s particularly true after the Nuclear Regulatory Commission certified the Vogtle Unit 4 design last week as the permanent, settled schematic for future AP1000s.
But Klecha left open the possibility of another technology. “The AP1000 is our basis for the site at this point, but we’ll continue to evaluate other options as we get through the site characterization,” he said. He expects that process to wrap up in “the first half of next year.”
The company’s options are limited, though. Last month, as I reported, South Korea agreed to help the U.S. build up to six new AP1000s at an as-yet-unspecified site in addition to constructing at least two APR1400s — that is, essentially the Korean version of the American technology. In theory, The Nuclear Company could build APR1400s, too. But it’s highly unlikely, since Westinghouse accused the state-owned Korea Electric Power Corporation of ripping off its technology for the APR1400 in 2022. That led to a yearslong lawsuit and settlement that gave the American company the right to demand royalties and keep Seoul out of markets where Westinghouse aims to compete.
The only other viable option is the ABWR. The world’s first so-called advanced reactor, the ABWR was built with General Electric’s boiling water reactor technology, which is used across about a third of the U.S. fleet. It serves as the second-most popular design after Westinghouse’s pressurized water reactor model. Japan successfully built four ABWRs over a decade from 1996 to 2006, and Taiwan nearly completed two before killing the project in a bid to phase out nuclear power altogether. The NRC certified the ABWR for construction in the U.S., but a project in southern Texas that aimed to build the first in the U.S. was scrapped about a decade ago.
“The ABWR has an impressive pedigree of construction success as well as experience being built to U.S. standards that is hard to find outside of the Vogtle project,” Brett Rampal, a veteran nuclear consultant who advises Deloitte and Veriten, told me. Still, he said, the AP1000 is the leading contender for the Kentucky site.
Rampal said Prosperity One represents a welcome break from how large-scale reactors have been planned in recent years. While most of the industry remains focused on small modular reactors, research I covered last month indicates the technologies could face worse cost problems than large-scale units, and the emerging consensus on building AP1000s focuses on expanding existing nuclear plants.
Indeed, The Nuclear Company’s first major deal was to help Brookfield Asset Management, which owns 51% of Westinghouse, complete a thwarted AP1000 project at the V.C. Summer plant in South Carolina. But other potential sites considered for new AP1000s included expansions of Florida Power & Light’s Turkey Point nuclear plant in Florida, the Tennessee Valley Authority’s Bellefonte nuclear station in Alabama, or even adding another two units to Plant Vogtle.
“A lot of the thoughts around AP1000s and large reactors have always been around existing or already-licensed sites,” Rampal said. “It’s very interesting to see TNC’s first project buck the trend of what folks have been talking about around the large reactor story in this country."
At least one thing is certain about The Nuclear Company’s approach: It will settle on one design. The company is animated by the need to avoid one of the U.S. nuclear industry’s biggest financial mistakes, known simply and derisively as “Whoops.” In 1983, the Washington Public Power Supply System — WPPSS — triggered what was then the largest municipal bond default in U.S. history after its buildout of several different reactor designs at once fell apart in a major boondoggle.
Building different reactors at Prosperity One “really goes against our mission, our vision, and our thesis as a company,” Klecha confirmed.
The key is repeating the same design over and over again so the project managers sort out the fastest, most efficient ways to build and workers hone skills in actually constructing the design. “Six AP1000 units on one site creates the scale and repetition needed to drive down costs and sends a strong signal to the supply chain,” Lin Yuan, the senior advisor at the Nuclear Scaling Initiative, a non-profit collaboration working to create the enabling commercial and policy conditions for safe and secure nuclear energy scaling, told me in an email. “Manufacturers and craft labor need to see a sustained order pipeline to invest in capacity, factory expansion, and training.”
Vogtle Unit 4 came online in 2024 roughly 30% cheaper and faster than Vogtle Unit 3, completed a year earlier. Klecha said that’s the minimum cost reduction The Nuclear Company expects for the first two reactors built at Prosperity One.
“The 30%, I would say, is the floor on the savings from the first unit to the second unit,” he said. “How do we capture those lessons? Obviously, our team’s experience. We have a pretty rigorous ‘lessons learned’ document.”
Soon, he hopes, there will be even more lessons learned — in concrete, rather than on paper.