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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 tech giant had been by far the nascent industry’s biggest customer.
Microsoft has begun telling suppliers and partners that it is pausing future purchases of carbon removal, according to two people who have been informed of its plans.
The news deals a potentially major setback to the fledgling carbon removal industry, which has relied on Microsoft’s voluntary corporate buying as an anchor source of early demand. The technology giant has made the overwhelming majority of carbon removal purchases in recent years.
It’s not yet clear whether the company could still increase its investment in existing projects or when it might resume purchases in the future.
In a statement, a Microsoft spokesperson denied that the company was indefinitely pausing all of its purchases. “We continually review and assess our carbon removal portfolio along with market conditions for the optimal balance on our path to carbon negative,” she said.
Industry data suggests that Microsoft has done more than any other private company — and arguably any organization on Earth — to support early-stage technologies that could withdraw or eliminate carbon dioxide from the atmosphere.
It has purchased 45 million tons of carbon removal, according to its own releases. The next-largest buyer of carbon removal credits — Frontier, a coalition of large companies led by the payments processing firm Stripe — has bought 1.8 million tons of carbon removal.
Microsoft made 90% of all carbon removal purchases worldwide last year, according to data from the third-party industry monitor CDR.fyi. The company is generally cited as making somewhere between 79% to 90% of all historic carbon removal purchases.
Microsoft also published guidelines about what it considered “ideal” carbon removal projects, setting de facto early industry standards for technologies including direct air capture, soil carbon management, and enhanced rock weathering.
The tech company has backed carbon removal in large part to meet its aggressive internal climate goals. Microsoft has pledged to become “carbon negative” by 2030, meaning that it must remove more greenhouse gases from the atmosphere than it emits within four years. The company also aims to eliminate its half century of historic carbon emissions by 2050.
Like other major tech firms, including Google and Meta, Microsoft has struggled to square its years-old climate goals with the urgent need to power energy-hungry AI data centers. But it has generally been seen as more environmentally friendly than other tech firms.
When Heatmap polled climate insiders late last year, Microsoft and Google were seen as the two AI tech developers who were “best” on climate. (Meta and Amazon got failing marks.)
Microsoft was making carbon removal announcements as recently as this week. It announced its most recent purchase of CDR credits only three days ago, when it bought more than 620,000 tons of credits from an indigenous-owned bioenergy carbon capture and storage project in Saskatchewan, Canada.
The Intergovernmental Panel on Climate Change considers carbon removal — technologies and methods that can reduce the amount of heat-trapping pollution in the atmosphere on century-long time scales — to be essential to meet the Paris Agreement’s climate goals.
By 2050, the world will need to remove 7 to 9 billion tons of carbon dioxide each year in order to hold to its Paris targets, according to an independent 2024 report.
Microsoft’s apparent pause comes at a lean time for the carbon removal industry, because the Trump administration has declined to spend — and in some cases even reassigned — funds previously authorized to encourage the development of the technology. For instance, the Energy Department says it plans to use more than $500 million in carbon removal funding to prop up aging coal plants.
Congress has been more generous to carbon removal, which has historically drawn more bipartisan support than other clean energy technologies. The 2026 federal spending law included more than $116 million to support carbon removal research and set up a federal purchasing program. With Microsoft’s shift, that purchasing scheme will be more important than ever.
On ARPA-E’s record commitment, and more of the week’s fundraising news
I don’t have any AI deals to bring you this week, but luckily I can still count on fusion to generate a steady stream of announcements. This time, the funding is coming from the federal government. At its annual innovation summit, ARPA-E announced it’s committing $135 million to address key barriers to fusion commercialization — a single allocation that exceeds the total amount that the agency has previously devoted to the tech after a decade of continuous funding.
There’s also, somewhat surprisingly, still venture enthusiasm for sustainable aviation fuels. And just like last week, membrane-based industrial separations tech also secured fresh capital. Could this be one of the hottest boring industries around? On the non-venture side, the industrial waste upcycling company Sedron secured a $500 million equity investment from the decarbonization-focused firm Ara Partners.
ARPA-E Makes Record Funding Commitment to Fusion Energy
The Department of Energy’s Advanced Research Projects Agency–Energy, better known as ARPA-E, has propelled research and development efforts across a broad set of potentially transformational energy technologies, from thermal energy storage to advanced geothermal systems and — of course — fusion. According to the Fusion Industry Association, the agency has backed 69 fusion projects across 34 universities, 14 national labs, and 27 companies. Seven fusion startups have emerged directly from ARPA-E programs, including Zap Energy and Thea Energy. But ARPA-E thinks there’s still so much more it can do.
This week, ARPA-E announced an additional $135 million in funding for fusion. This exceeds the agency’s total prior cumulative commitment to the technology — which stands at roughly $134 million and has helped catalyze an additional $1.5 billion in private follow-on investment. This latest capital will target what ARPA-E describes as “the toughest technical barriers” to commercialization, including the development of low-cost plasma heating systems, advanced fuels, next-generation power conversion systems, and novel plant and component designs aimed at improving durability while lowering overall costs.
“The question is no longer whether fusion is possible. The question is how fast we get fusion-generated power on the grid, and whether America leads that achievement,” said ARPA-E director Conner Prochaska at the agency’s annual Energy Innovation Summit this week. Today, there are over 50 fusion companies globally, collectively backed by about $10 billion in private investment. The agency framed this latest announcement in terms of strengthening U.S. “energy dominance” while guaranteeing an “affordable, reliable, secure energy supply.” Perhaps it slipped their minds, but it bears mention that fusion would also be a zero-carbon energy source.
Sora Fuel Gets $14.6 Million Boost Amidst a Struggling SAF Market
At the beginning of last year, I wrote about the money pouring into the search for sustainable aviation fuels that could help decarbonize medium- to long-distance flights. Even then, however, investment levels remained well below what experts say is needed to meet the aviation sector's 2050 net-zero target — and the situation hasn’t improved. The Trump administration’s infamous One Big Beautiful Bill reduced the SAF tax credit from up to $1.75 per gallon to $1.00 per gallon, dampening enthusiasm in the sector.
And yet there are still glimmers of momentum in the early-stage venture landscape, highlighted this week by Sora Fuel’s $14.6 million fundraise. The startup is basically trying to turn air into fuel. It’s developing a system that captures CO2 and then converts it directly into a syngas, which can then be upgraded into synthetic hydrocarbon fuels suitable as drop-in replacements for conventional jet fuel.
Unlike most DAC systems, Sora’s process doesn’t rely on energy-intensive sorbent regeneration — thermally or chemically cleaning the sorbents for reuse — which the company says allows it to avoid over 90% of conventional DAC costs. The startup claims it will be able to deliver captured CO2 at under $50 per ton — though that’s actually a substantial increase from the $20 per ton target that it cited in 2024. But if either number proves achievable at scale, that would be huge, not just for the sustainable fuels sector but the broader carbon capture market.
Sora will use the new capital to build a pilot facility, which it expects to have up and running within 18 to 24 months. "We've gone further, faster, and with less capital than anyone in the e-fuels space," said Gareth Ross, Sora’s co-founder and CEO.
MTR Secures $27 Million to Accelerate Membrane-Based Carbon Capture
Fresh on the heels of last week’s membrane funding news, which saw Via Separations raise a $36 million round, this week brought another tranche of capital into the decidedly unglamorous but essential world of industrial separations — that is, the process used to isolate specific chemicals or materials from a mixture. Membrane Technology and Research, better known as MTR, announced a $27 million Series B round led by the oil and gas-backed venture firm Climate Investment.
The startup develops membrane materials and systems for gas and liquid separations, and maintains a business division specifically devoted to carbon capture. With support from the Department of Energy, MTR is piloting its tech at a coal plant in Wyoming that it describes as the world’s largest membrane-based carbon capture system.
As I noted a few weeks ago, Climate Investment itself is flush with $450 million in new financing, having recently closed a growth fund aimed at helping decarbonization technologies bridge the “missing middle” in climate tech funding — the notorious gap between a company’s early-stage rounds and commercial deployment. The MTR investment comes out of this new fund.
Ara Partners Acquires Waste Upcycler Sedron, Invests $500 Million To Scale Its Tech
This week, the decarbonization-focused equity investor Ara Partners acquired a controlling stake in the industrial-scale waste processing and upcycling company Sedron. The new influx of capital will go towards scaling the company’s tech, which processes biosolids such as municipal sewage sludge and livestock manure into usable outputs such as clean water, fertilizer products, and supposedly renewable energy — though the company has not explained how the latter process works.
Sedron’s system combines multiple capital-intensive waste treatment steps — typically handled across separate units — into a single continuous processing platform. Sedron says this integration allows it to use 10 times less energy than conventional treatment approaches — although its own website used to claim a 30x reduction.
This new funding will go towards accelerating the company’s project development pipeline and expanding deployment across North America. Sedron is currently preparing to begin construction on a biosolids processing facility in Florida this spring, while also aiming to begin commercial operations at a large dairy manure project in Wisconsin this summer.
Why the shooting in Indianapolis might be a bellwether
This week, the fight over data centers turned violent and it has clearly spooked the sector. Extremism researchers say they’re right to be concerned and this may only be the beginning.
Life may never be the same for Indianapolis city-county councilor Ron Gibson, who voted for a controversial data center last week, citing its economic benefits, and, on the morning of April 6, woke to find 13 bullets were fired through the door of his north-east Indy home. Beneath his doormat read a note left behind: “No Data Centers.” Gibson, who did not respond to multiple requests for additional comment, told the media some of the shots landed near where he played with his child hours earlier.
It was the third incident this year indicating the bubbling angst against data centers really does have potential to turn violent. In February, a man was arrested in Troy, Illinois, for threatening to shoot and kill employees for a data center developer working in his community. In March a California company sued activists fighting their project after they allegedly suggested people assassinate individuals involved with it, invoking infamous murder suspect Luigi Mangione, who allegedly shot and killed a healthcare CEO in 2024.
AI infrastructure boosters were quick to turn the Indianapolis shooting into a chance to broadly criticize those who oppose data centers. The AI Infrastructure Coalition, a new pro-data center D.C. trade group, blasted a statement out to press from co-chairs former Sen. Kyrsten Sinema and former Rep. Garret Graves. “Local leaders must be able to represent their community without worrying about the threat of violence,” Sinema and Graves stated. “Opponents of AI infrastructure are using increasingly heated and false language to claim that data centers threaten the wellbeing of communities. This rhetoric has consequences.”
Although I take umbrage with the claim opponents are using “false language” – data centers can bring profound environmental and cost-of-living consequences — one can easily see a powder keg forming online around data centers.
All you have to do is look at discussions of what happened in Indianapolis. News of the event posted to the “Say NO to Data Centers” Facebook group went viral, inviting mostly comments endorsing the shooting. “Good. They should be afraid of an educated and armed population,” reads the top comment, netting almost 640 likes. When I first posted about the shooting to X and Bluesky, my words went wildly viral, becoming some of the most shared content on either site about the incident. Among the most engaged-with replies to my X post: “When you realize that the only way this ends is when people start doing things you can’t post online,” read one. “If they ever caught him and I was in the jury, I’d vote not guilty,” stated another. A third declared, “MOSA - make officials scared again.”
This didn’t surprise Clara Broekaert, a Geneva-based research analyst for The Soufan Center, a nonprofit organization focused on studying global extremism and terrorist threats. Broekaert told me in an interview her organization has been doing “extensive” open-source intelligence surveys to understand the risk of violence over data centers. For the most part, while overwhelmingly negative, people are simply expressing negative perspectives. However, she said that since “early 2024, we have seen a spike in online rhetoric and activism that threatens physical actions against infrastructure and people involved in it.” Most common are comments encouraging arson and sabotage against data centers themselves but increasingly, threats are being levied against people working at development companies and politicians who support data centers. The threats stem from various root causes, she said, ranging from fears their quality of life will be dramatically harmed by data centers to frustrations about water consumption. She pays particular attention to individual county commissioners’ social media pages when conflicts over projects are going on, and hears some of the violent rhetoric crop up in public hearings.
Broekaert doesn’t think we’ll see “a huge uptick in violence against people” but is concerned that “we’ll see more physical sabotage,” especially as political organizing movements against data centers converge – the right-left horseshoe alignment I’ve previously discussed.
“You just see this bottled up resistance against data centers,” she said. “It’s very closely connected to an economic disillusionment.”
Jordyn Abrams, an extremism research fellow at the George Washington University, said there are different strains of violent anti-tech movements to track. In some ways she said these risks can be traced to longstanding histories of eco-terrorism as protest, pointing to a leftwing organization’s arson attack against a Tesla factory in Germany as just one example. On the flip side of the coin, you’ve got ecofascist ideologies warping minds against technology broadly, like what motivated the Christchurch shooting in New Zealand. Of course, there’s also your garden variety unhinged individuals venting anger in unhealthy and dangerous ways.
Irrespective of what brought someone to violence, Abrams said this trend is something anyone involved in the data center boom needs to pay more attention to. “I think there’s a concern when we’re promoting resolving things with violence,” she said, noting these online discussions can become siloed avenues for radicalization. “There’s a growing sentiment that can, in an echo chamber, become an even greater challenge.”
Once again I do not believe that most people who fight data centers are violent and many have valid reasons for their frustrations. But I believe we will likely see more attacks on structures and people involved in this nascent industrial tech boom, and I hope people take this escalating environment seriously.