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Much may depend on the Senate’s tolerance for fuzzy math.

House Republicans passed a budget blueprint Thursday morning that lays the groundwork for the party to begin drafting legislation to enact President Trump’s agenda. Now the fight over the Inflation Reduction Act’s clean energy tax credits begins in earnest.
The blueprint is merely a set of instructions for writing the eventual budget bill, laying out topline numbers for tax cuts and spending reductions — it doesn’t contain any actual policies. Trump’s biggest priorities are to extend the tax cuts he enacted in 2017, pass new tax cuts on tips and overtime pay, and to boost spending on immigration control and defense.
The resolution that Republicans passed allows for all of the above. In total, it enables Congress to craft a bill that would increase the national debt over the next decade by more than $5 trillion.
The good news for the IRA tax credits is that the framework only requires lawmakers to craft legislation that would produce $4 billion in savings — a relatively small amount that doesn't exert much pressure on cutting the tax credits. The bad news is that Senate Republicans have given their word to budget hawks in the House that they will aim to cut much more than that — at least $1.5 trillion in spending. House Republicans, for their part, are eager to do at least $2 trillion in deficit reductions.
According to a “menu” of budget proposals that made its way around the Hill earlier this year, Republicans estimate they could save anywhere from $3 billion to $800 billion by repealing IRA tax credits, depending on how many and which ones are cut.
Lawmakers could also go after other climate-related policies, like cutting grant programs from the Department of Energy and Environmental Protection Agency. “Most of the funds have been obligated,” meaning they’re legally committed to grantees, “so there’s not much left to rescind,” Alex McDonough, a lobbyist with Pioneer Public Affairs, told me in an email. “We’ll see what they do with a possible rescission package, but even that would be a drop in the bucket compared to the trillions they want for offsetting tax cuts.”
Lobbyists on Capitol Hill and other experts I’ve spoken with over the past two weeks disagree about how much the numbers matter when it comes to whether and how much of the IRA will be repealed. Some felt the budget math would take priority, while others told me that if any of the tax credits were killed or saved, it would be for political reasons over anything else.
Though the biggest political target seems to be the electric vehicle tax credits, “anything with a price tag is at least somewhat vulnerable,” McDonough said. Lawmakers could also opt to make certain credits more difficult to access or phase them out earlier rather than fully repeal them.
McDonough also said the lobbying that companies and trade groups have been doing around the manufacturing and clean electricity tax credits appeared to be working, and will ratchet up even more in May. “Appealing to ‘all of the above’ and ‘energy dominance’ is working because everyone knows how badly we need new generation to meet rapidly rising demand and a lot of the clean energy resources happen to be the quickest to deploy,” he said. “Utilities want it too, which is also very important.”
On Thursday, Republican Senators Lisa Murkowski of Alaska and John Curtis of Utah sent a letter to their party’s leadership asking them to preserve tax credits that spur manufacturing, reduce energy costs for consumers, and give certainty to businesses that have already made investments in the U.S. based on the credits. Thom Tillis of North Carolina and Jerry Moran of Kansas also signed the letter. It was the first major show of support for the tax credits in the Senate, following a similar letter signed by 21 Republicans in the House.
Republicans are trying to enact Trump’s agenda using a special process called budget reconciliation, which will enable them to pass it with a simple 51-vote majority rather than the 60 votes required to overcome a filibuster. The party currently has 53 seats, so four Republicans coming out in favor of preserving IRA tax credits is a good sign for the law. Similarly, the Republicans have a seven-seat majority in the House, and so those 21 who like the IRA could have quite a bit of influence.
But the other big open question for the future of the IRA — and frankly, for the future of the Senate — is whether Republicans will proceed with the fuzzy math they are using to calculate the cost of the bill. When the Congressional Budget Office scores the extension of Trump's 2017 tax cuts, it will use what's called a "current law baseline," and estimate that they will cost the government more than $3 trillion dollars over the next ten years. Senate Republicans, however, have asserted that extending the 2017 tax cuts is free and will have no impact on the deficit, using a different scoring method called a “current policy baseline.”
The reason this matters for the IRA is that the budget reconciliation process has strict rules. If lawmakers were forced to recognize the true cost of the tax cut extensions in drafting the budget bill, they would have to make several trillion dollars’ worth of additional spending cuts in order to align with the blueprint they passed this week. In that scenario, it’s hard to see how any of the IRA could survive.
But if Republicans unify around this fuzzy math and carry it all the way to the final vote on the bill, which would be unprecedented, they could face a showdown with Democrats, who will say the bill doesn’t comply with the reconciliation rules. In that scenario, they’ll be faced with a choice either to go back to the drawing board or take the nuclear option — essentially changing how the Senate operates.
“There will be a majority vote on whether the Senate wants to change its precedents going forward, forever, and basically open up reconciliation to whatever policies the majority wants to enact going forward,” Charlie Ellsworth, another lobbyist for Pioneer Public Affairs, told me.
Expect to hear a lot more about this debate over the cost of the tax cuts once lawmakers return to Washington on April 28 after a two-week recess. Republicans have said they want to get the budget bill to Trump’s desk by Memorial Day. McDonough doesn’t think that’s in the cards, and expects it to happen by the August recess at best. But he expects the House Ways and Means committee to push out a first version of the bill in May, so we’ll see what the first proposal is for the fate of the IRA tax credits then.
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The data center boom is everywhere you look in U.S. economic and emissions data.
This is an edition of Heatmap Daily, an evening review of the day’s news written by our executive editor. Sign up for it here.
It isn’t exactly a new thought, but I’ve been struck recently by how many trends in America’s economic and environmental data are fundamentally about the data center boom and the return of electricity demand:
First, the Energy Information Administration reported this week that U.S. emissions grew by more than 2% last year, driven by surging electricity demand and an increase in coal-fired generation.What caused that higher power demand? New factories and data centers — as well as record summertime cooling demand.
Second, many of the new factories driving that higher power demand are themselves producing goods that are … let’s say … data center-adjacent. There are the enormous new semiconductor fabs, of course. But Ford and General Motors have also set up new production lines (or repurposed old ones) to manufacture grid-scale batteries to meet power demand.
Third, take a look at the recent U.S. spending on private non-residential construction — in other words, everything American companies are building that is not houses, condos, or apartments.
The construction industry’s spent almost $60 billion on data centers over the past year, which is more than it spent on all other office buildings combined (and more than it spent building warehouses, too). Just a handful of categories — data centers, power plants, electricity infrastructure, and certain kinds of electronics manufacturing — now make up a third of all U.S. private non-residential construction investment. They’ve never made up such a large share of construction spending since data collection began in 2014.
As The New York Times recently noted, the American economy is unusually dependent on the American stock market right now — and the stock market is unusually dependent on artificial intelligence. This week, investors started to balk at the enormous spending hyperscalers are planning to keep building out the AI boom; Alphabet’s shares dropped 8% this week after it boosted its planned 2026 capital expenditure and signaled 2027 will be even bigger. If the data center boom started to slow down in earnest, then more than just that budget will change.
Speaking of which, my colleague Emily Pontecorvo wrote earlier this week about how many businesses are struggling to even estimate their carbon emissions from artificial intelligence. The carbon accounting startup Watershed recently unveiled a new formula to help companies get a sense of their AI-related emissions.
But even that formula is still limited by the amount of data hyperscalers publish — and they don’t publish that much. Google, for instance, is the only AI company that has (laudably) provided estimates of its emissions on a per-prompt basis. Yet no company has published its per-token emissions, or how emissions sync up with particular models or regions.
So Emily asked Google: Why aren’t you — or any other model provider — disclosing this kind of data yet?
The tech company didn’t get back to us until after we’d published Emily’s story. But its response was interesting enough that I wanted to quote some of it here.
The problem is “industry consensus,” Cooper Elsworth, a Google spokesperson, told us. “There is currently very little consensus on how to comprehensively and fairly measure the serving environmental impact of generative AI (such as text generation),” he wrote. “Without standardized, ‘apples-to-apples’ frameworks, it is difficult to compare different providers accurately.”
That’s partly because energy use — and emissions data — can vary from site to site and depend on “custom-built hardware, software compilers, and advanced inference techniques.” And he claimed Google doesn’t always have the measurement hardware in place to provide such specific estimates: “Providing precise, repeatable data requires highly advanced measurement infrastructure,” he said. “For example, software-based energy monitoring tools often suffer from sampling biases. For our study, we had to step away from top-down averages and directly measure actual energy at the physical power supply unit (PSU) level across our deployed fleet. Not all providers have the telemetry or data sets required to benchmark their operations at this level of granularity.”
Read Emily’s story to understand the other reasons why estimating — or even “guesstimating” — AI-related carbon emissions is so challenging.
A conversation with Emma Uridge of the Kansas Health Institute.
This week’s conversation is with Emma Uridge, analyst with the Kansas Health Institute. Uridge spent copious hours analyzing state and local laws on data center development to best understand how policymakers are responding to the potential environmental public health impacts of large AI infrastructure, including power and water. The report, which came out this week, also goes in depth into those health impacts. I reached out to her to discuss what she sees as must-watch territory for our readers on this emerging policy arena.
Our conversation was lightly edited for clarity.
What is actually being done on policy when it comes to data centers — beyond moratoria of course?
So first I’d like to just talk about the point of moratoria. It’s helpful to talk about how these policies emerge in the first place. One area where moratoria are helpful is when a data center is proposed but the county has no approach for how they’d like to potentially regulate them. That’s temporary, most of the time. It lets local governments conduct research on the various impacts and also negotiate community benefits, ones that can mitigate any potential negative impacts — like Lancaster Pennsylvania, which instituted a community benefit agreement that maximized the potential benefits of development while mitigating what large data centers can do. That agreement looked at capping municipal water use at 20,000 gallons per day and requiring 100% clean energy. It had financial penalties for non-compliance. The company also committed $20 million to their local economic development and clean energy fund. There are ways to negotiate with developers.
We also see amendments to existing zoning. Data center proposals are increasingly popping up in rural areas, many of which are unzoned, so there’s no way a county can negotiate unless there’s a moratorium in place.
Other policy solutions include different performance standards or requiring on-site renewable energy, like what Jefferson County, Missouri, looked at. Also setback requirements, mandatory noise buffers, ending by-right zoning.
Where are local governments getting ideas for regulating data centers?
A lot of the technical information comes from developers. That can in cases be seen as a biased source of information. I wouldn’t say there’s a dedicated group providing assistance to local governments when a project is proposed — which is a similar story to wind industry development, where we have only a handful of consultants who provide technical advice. It can be really helpful to get a multi-disciplinary approach to hearing information. It can be helpful to have the utility commission, public health folks, those in academia, as well as the developer.
As of right now, especially in rural areas, local governments have a hard task of balancing pushback while getting the most accurate, evidence-based, neutral information to make decisions. That balance can be contentious.
What is the federal government doing on data center policy? How is the Trump administration approaching it?
A few things there. In the early days, the drive was for AI expansion and to be competitive with foreign adversaries. Now due to the amount of public pushback in red and blue localities and a more cautious approach.
I’m not seeing a lot of actual policy movement at this time.
I know the EPA is looking at the chemicals used in cooling data centers because when that water is cycled through the system, some of it is discharged into the water system, so they’re looking at the Toxic Substances and Control Act for monitoring that.
How much of an impact does this minimal federal role have on industry behavior?
Y’know, this isn’t specific to data centers. This is true for all kinds of large-scale development: there’s a need to require some sort of federal monitoring and regulation.
That’s where I see an emerging role for public health. At the federal level, there could be policy movement towards requiring some sort of environmental monitoring at data centers to make sure they’re operating responsibility. Looking at specific water use relative to water availability and what happens when there’s a time of severe, persistent drought. With air quality too — we’ve seen areas where the grid isn’t as reliable so their diesel generators are kicking on more and affecting air quality for residents.
We’re just not seeing all of that right now. We need corporate disclosure.
What do you see as the most important public health impacts from data center development?
It varies by localities. The most discussed obviously is water usage. One thing I’d note about my conversations with folks enthusiastic around emerging tech is, there are still questions that need to be asked about the capacity of localities to support a data center. Like a small town in Kansas may only be using 40% of their water for their utility needs. If a data center came online, how much of that water goes to the data center?
One area underexplored within the public health discipline is energy poverty and energy security. The ability of a household to meet the needs of everything energy provides in our lives. It’s known we have an aging electric grid but we’re not talking enough about large-scale blackouts when the grid is not sufficient to support some of these new data centers.
Plus more of the week’s big development fights.
1. Laramie County, Wyoming — Meta is fighting the fine it received in the Cheyenne data center water pollution controversy, and the conflict between the tech giant and the city’s small board of public utilities is continuing to spill out into the public.
2. Niagara County, New York — This county just rejected a solar project’s highway work permits in a show of retaliation against the state’s Office of Renewable Energy Siting.
3. Barron County, Wisconsin — The anti-solar protest is the new campaign stop in deep red Wisconsin.
4. Chesapeake, Virginia — A large battery storage project on the Virginia coastline is on the rocks amidst rampant local opposition.
5. Lewis County, West Virginia — West Virginia is now a key battleground in the fight over transmission, as a line spanning all of West Virginia and Maryland — and cutting through Data Center Alley in Virginia — causes compounding consternation.