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Utilities in the Southeast, especially, may have to rethink.
Utilities all over the country have proposed to build a slew of new natural gas-fired power plants in recent months, citing an anticipated surge in electricity demand from data centers, manufacturing, and electric vehicles. But on Thursday, the Environmental Protection Agency finalized new emissions limits on power plants that throw many of those plans into question.
The rules require that newly built natural gas plants that are designed to help meet the grid’s daily, minimum needs, will have to slash their carbon emissions by 90% by 2032, an amount that can only be achieved with the use of carbon capture equipment. But carbon capture will be cost-prohibitive in many cases — especially in the Southeast, where much of that expected demand growth is concentrated, but which lacks the geology necessary to store captured carbon underground.
“With this rule, it’s kind of back to square one,” Tyler Norris, an electric power systems researcher, told me. “I think most likely, you're gonna see the regulators really push back and call upon them to redo all their modeling.”
This is the first federal mandate to curb carbon from the electricity sector since President Obama’s 2015 Clean Power Plan, which never went into effect. Despite growing investment in renewable energy, power generation is responsible for about a quarter of the country’s greenhouse gas emissions.
The Biden administration is guaranteed to face legal challenges from Republican attorneys general and electric utilities. The Edison Electric Institute, the largest trade group for electric utilities, asserted that carbon capture “is not yet ready for full-scale, economy-wide deployment” and expressed worry over the timelines for permitting and financing. Duke Energy, one of the Southeast’s largest utilities, issued a statement after the rule came out saying that it “presents significant challenges to customer reliability and affordability – as well as limits the potential of our ability to be a global leader in chips, artificial intelligence and advanced manufacturing,” echoing concerns from the National Rural Electric Cooperative Association. The EPA, however, maintains that recent federal investments in carbon capture — including an $85 tax credit for every ton of CO2 captured and stored — render it both “technically feasible and cost-reasonable.”
As part of the same announcement on Thursday, the Environmental Protection Agency finalized several additional regulations to rein in air and water pollution from coal-fired power plants, including mercury and toxic metals, wastewater, and coal ash, in addition to carbon emissions. During a call with reporters on Wednesday, EPA administrator Michael Regan argued that by finalizing all of these rules at once, the agency was providing the highest degree of regulatory certainty for the power industry. “This approach is both strategic and innovative,” he said. “We are ensuring that the power sector has the information needed to prepare for the future with confidence, enabling strong investment and planning decisions.”
Initially the EPA was going to require emissions cuts at existing natural gas plants, too, but the agency announced in February that it was delaying that rule in order to develop a “stronger, more durable approach.” EPA officials offered no new details on the timeline on Wednesday.
The two other biggest changes the agency made between the proposed and final rules were to push forward and shorten the timeline for coal plant compliance, and to lower the threshold determining how many natural gas plants have to meet the toughest standard — which means more plants will have to control their emissions.
The agency projects the new standards will prevent a total of nearly 1.4 billion metric tons of carbon emissions through 2047, which is about equal to the amount the power sector emits in a year. That’s significant, but it’s far less than the clean car rules the EPA finalized in March, which are expected to avoid 7.2 billion metric tons of carbon between 2027 and 2055. The EPA also estimates that the power plant rules will produce $370 billion in climate and health benefits over the next two decades, in terms of avoided deaths, hospital visits, and asthma cases.
The new emissions limits for coal plants are tied to how much longer a given coal plant is slated to operate. Those that plan to shut down before 2032 are exempt altogether. Those that plan to retire by 2039 have to reduce the amount of CO2 they emit per megawatt hour by replacing some of the coal they burn with natural gas beginning in 2030. Coal plants with no plans to retire before 2039 are subject to the highest standard, requiring a 90% drop in emissions by 2032 — which would require capturing the emissions and storing them underground.
These standards are certain to lead to more plant closures, but coal plants are already shutting down at a rapid pace purely based on economics and the fact that so many of them are so old. Getting the rules in place is less about tackling coal emissions, per se, and more about “getting utilities thinking more proactive about how they are going to replace these coal plants,” Michelle Solomon, a senior policy advisor at the nonprofit think tank Energy Innovation, told me.
Gas, however, is another story. Utilities have been sounding the alarm about a coming surge in electricity demand. Electric companies throughout the Southeast, as well as Texas, Wisconsin, and elsewhere, have proposed building dozens of new natural gas plants, arguing that renewables and batteries aren’t up to the task of providing a reliable, dispatchable source of power.
Whether that coming demand is real or inflated is a matter of debate. But regardless, clean energy researchers and advocates dispute the idea that gas plants are needed for reliability.
“Utilities are seeing an additional need for peak capacity, not an additional need for capacity throughout the day,” Solomon told me, asserting it was possible to meet those peaks with solar and storage, or even by improving efficiency so that the peaks aren’t as high. The trick is making sure we can bring those resources online fast enough. To that end, the Department of Energy also announced a number of initiatives to boost transmission infrastructure on Thursday.
The EPA’s regulations for new gas plants are tied to how frequently they are intended to operate. Plants that are designed to switch on during times of peak demand — a variety called a “simple cycle” combustion turbine plant — won’t have to do anything differently. Plants that run a bit more often — so-called “intermediate” resources that might run daily from mid-morning till the evening, at 20% to 40% of their annual capacity — will be required to install the most efficient equipment available on the market. Any that operate more frequently than that will be subject to the 90% emissions reduction standard by 2032. This primarily affects “combined cycle” plants, which are more efficient than simple cycle but can’t ramp up and down as quickly or easily.
Utilities with recently hatched plans to build simple cycle plants, including Georgia Power, are unlikely to be affected by the rule at all. “I do think that makes sense, given the focus of these rules, which are on carbon emissions,” Amanda Levin, a director of policy analysis at the Natural Resources Defense Council, told me. “Given the frequency and type of operation for [simple cycle], they’re not as significant as sources of CO2.”
But those utilities that are planning to build combined cycle projects — and many of them are — could be forced to go back to the drawing board. Norris noted that Duke Energy, which serves customers in North and South Carolina and has proposed building more than 6 gigawatts of combined cycle capacity, will be especially exposed.
For combined cycle plants, there are essentially two options to comply: Install carbon capture, or plan to run your plant a lot less frequently. In either case, it “dramatically increases the levelized cost of those units,” Norris told me. “So I think any reasonable regulator would say we've got to go back and do a much more rigorous comparative analysis to other least-cost solutions.”
Solomon has a more cynical view of the recent panic over electricity demand and rush to build new gas plants. “We’ve known that demand is growing, is going to grow, for a long time,” she told me. “The fact that there’s quite a lot of news about this just as the rules are coming out is unlikely to be a total coincidence.”
Editor’s note: This story has been updated to reflect statements from Duke Energy and trade groups.
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And more on the week’s biggest conflicts around renewable energy projects.
1. Jackson County, Kansas – A judge has rejected a Hail Mary lawsuit to kill a single solar farm over it benefiting from the Inflation Reduction Act, siding with arguments from a somewhat unexpected source — the Trump administration’s Justice Department — which argued that projects qualifying for tax credits do not require federal environmental reviews.
2. Portage County, Wisconsin – The largest solar project in the Badger State is now one step closer to construction after settling with environmentalists concerned about impacts to the Greater Prairie Chicken, an imperiled bird species beloved in wildlife conservation circles.
3. Imperial County, California – The board of directors for the agriculture-saturated Imperial Irrigation District in southern California has approved a resolution opposing solar projects on farmland.
4. New England – Offshore wind opponents are starting to win big in state negotiations with developers, as officials once committed to the energy sources delay final decisions on maintaining contracts.
5. Barren County, Kentucky – Remember the National Park fighting the solar farm? We may see a resolution to that conflict later this month.
6. Washington County, Arkansas – It seems that RES’ efforts to build a wind farm here are leading the county to face calls for a blanket moratorium.
7. Westchester County, New York – Yet another resort town in New York may be saying “no” to battery storage over fire risks.
Solar and wind projects are getting swept up in the blowback to data center construction, presenting a risk to renewable energy companies who are hoping to ride the rise of AI in an otherwise difficult moment for the industry.
The American data center boom is going to demand an enormous amount of electricity and renewables developers believe much of it will come from solar and wind. But while these types of energy generation may be more easily constructed than, say, a fossil power plant, it doesn’t necessarily mean a connection to a data center will make a renewable project more popular. Not to mention data centers in rural areas face complaints that overlap with prominent arguments against solar and wind – like noise and impacts to water and farmland – which is leading to unfavorable outcomes for renewable energy developers more broadly when a community turns against a data center.
“This is something that we’re just starting to see,” said Matthew Eisenson, a senior fellow with the Renewable Energy Legal Defense Initiative at the Columbia University Sabin Center for Climate Change Law. “It’s one thing for environmentalists to support wind and solar projects if the idea is that those projects will eventually replace coal power plants. But it’s another thing if those projects are purely being built to meet incremental demand from data centers.”
We’ve started to see evidence of this backlash in certain resort towns fearful of a new tech industry presence and the conflicts over transmission lines in Maryland. But it is most prominent in Virginia, ground zero for American hyperscaler data centers. As we’ve previously discussed in The Fight, rural Virginia is increasingly one of the hardest places to get approval for a solar farm in the U.S., and while there are many reasons the industry is facing issues there, a significant one is the state’s data center boom.
I spent weeks digging into the example of Mecklenburg County, where the local Board of Supervisors in May indefinitely banned new solar projects and is rejecting those that were in the middle of permitting when the decision came down. It’s also the site of a growing data center footprint. Microsoft, which already had a base of operations in the county’s town of Boydton, is in the process of building a giant data center hub with three buildings and an enormous amount of energy demand. It’s this sudden buildup of tech industry infrastructure that is by all appearances driving a backlash to renewable energy in the county, a place that already had a pre-existing high opposition risk in the Heatmap Pro database.
It’s not just data centers causing the ban in Mecklenburg, but it’s worth paying attention to how the fight over Big Tech and solar has overlapped in the county, where Sierra Club’s Virginia Chapter has worked locally to fight data center growth with a grassroots citizens group, Friends of the Meherrin River, that was a key supporter of the solar moratorium, too.
In a conversation with me this week, Tim Cywinski, communications director for the state’s Sierra Club chapter, told me municipal leaders like those in Mecklenburg are starting to group together renewables and data centers because, simply put, rural communities enter into conversations with these outsider business segments with a heavy dose of skepticism. This distrust can then be compounded when errors are made, such as when one utility-scale solar farm – Geenex’s Grasshopper project – apparently polluted a nearby creek after soil erosion issues during construction, a problem project operator Dominion Energy later acknowledged and has continued to be a pain point for renewables developers in the county.
“I don’t think the planning that has been presented to rural America has been adequate enough,” the Richmond-based advocate said. “Has solar kind of messed up in a lot of areas in rural America? Yeah, and that’s given those communities an excuse to roll them in with a lot of other bad stuff.”
Cywinski – who describes himself as “not your typical environmentalist” – says the data center space has done a worse job at community engagement than renewables developers in Virginia, and that the opposition against data center projects in places like Chesapeake and Fauquier is more intense, widespread, and popular than the opposition to renewables he’s seeing play out across the Commonwealth.
But, he added, he doesn’t believe the fight against data centers is “mutually exclusive” from conflicts over solar. “I’m not going to tout the gospel of solar while I’m trying to fight a data center for these people because it’s about listening to them, hearing their concerns, and then not telling them what to say but trying to help them elevate their perspective and their concerns,” Cywinski said.
As someone who spends a lot of time speaking with communities resisting solar and trying to best understand their concerns, I agree with Cywinksi: the conflict over data centers speaks to the heart of the rural vs. renewables divide, and it offers a warning shot to anyone thinking AI will help make solar and wind more popular.
The One Big Beautiful Bill Act is one signature away from becoming law and drastically changing the economics of renewables development in the U.S. That doesn’t mean decarbonization is over, experts told Heatmap, but it certainly doesn’t help.
What do we do now?
That’s the question people across the climate change and clean energy communities are asking themselves now that Congress has passed the One Big Beautiful Bill Act, which would slash most of the tax credits and subsidies for clean energy established under the Inflation Reduction Act.
Preliminary data from Princeton University’s REPEAT Project (led by Heatmap contributor Jesse Jenkins) forecasts that said bill will have a dramatic effect on the deployment of clean energy in the U.S., including reducing new solar and wind capacity additions by almost over 40 gigawatts over the next five years, and by about 300 gigawatts over the next 10. That would be enough to power 150 of Meta’s largest planned data centers by 2035.
But clean energy development will hardly grind to a halt. While much of the bill’s implementation is in question, the bill as written allows for several more years of tax credit eligibility for wind and solar projects and another year to qualify for them by starting construction. Nuclear, geothermal, and batteries can claim tax credits into the 2030s.
Shares in NextEra, which has one of the largest clean energy development businesses, have risen slightly this year and are down just 6% since the 2024 election. Shares in First Solar, the American solar manufacturer, are up substantially Thursday from a day prior and are about flat for the year, which may be a sign of investors’ belief that buyer demand for solar panels will persist — or optimism that the OBBBA’s punishing foreign entity of concern requirements will drive developers into the company’s arms.
Partisan reversals are hardly new to climate policy. The first Trump administration gleefully pulled the rug from under the Obama administration’s power plant emissions rules, and the second has been thorough so far in its assault on Biden’s attempt to replace them, along with tailpipe emissions standards and mileage standards for vehicles, and of course, the IRA.
Even so, there are ways the U.S. can reduce the volatility for businesses that are caught in the undertow. “Over the past 10 to 20 years, climate advocates have focused very heavily on D.C. as the driver of climate action and, to a lesser extent, California as a back-stop,” Hannah Safford, who was director for transportation and resilience in the Biden White House and is now associate director of climate and environment at the Federation of American Scientists, told Heatmap. “Pursuing a top down approach — some of that has worked, a lot of it hasn’t.”
In today’s environment, especially, where recognition of the need for action on climate change is so politically one-sided, it “makes sense for subnational, non-regulatory forces and market forces to drive progress,” Safford said. As an example, she pointed to the fall in emissions from the power sector since the late 2000s, despite no power plant emissions rule ever actually being in force.
“That tells you something about the capacity to deliver progress on outcomes you want,” she said.
Still, industry groups worry that after the wild swing between the 2022 IRA and the 2025 OBBBA, the U.S. has done permanent damage to its reputation as a business-friendly environment. Since continued swings at the federal level may be inevitable, building back that trust and creating certainty is “about finding ballasts,” Harry Godfrey, the managing director for Advanced Energy United’s federal priorities team, told Heatmap.
The first ballast groups like AEU will be looking to shore up is state policy. “States have to step up and take a leadership role,” he said, particularly in the areas that were gutted by Trump’s tax bill — residential energy efficiency and electrification, transportation and electric vehicles, and transmission.
State support could come in the form of tax credits, but that’s not the only tool that would create more certainty for businesses — considering the budget cuts states will face as a result of Trump’s tax bill, it also might not be an option. But a lot can be accomplished through legislative action, executive action, regulatory reform, and utility ratemaking, Godfrey said. He cited new virtual power plant pilot programs in Virginia and Colorado, which will require further regulatory work to “to get that market right.”
A lot of work can be done within states, as well, to make their deployment of clean energy more efficient and faster. Tyler Norris, a fellow at Duke University's Nicholas School of the Environment, pointed to Texas’ “connect and manage” model for connecting renewables to the grid, which allows projects to come online much more quickly than in the rest of the country. That’s because the state’s electricity market, ERCOT, does a much more limited study of what grid upgrades are needed to connect a project to the grid, and is generally more tolerant of curtailing generation (i.e. not letting power get to the grid at certain times) than other markets.
“As Texas continues to outpace other markets in generator and load interconnections, even in the absence of renewable tax credits, it seems increasingly plausible that developers and policymakers may conclude that deeper reform is needed to the non-ERCOT electricity markets,” Norris told Heatmap in an email.
At the federal level, there’s still a chance for, yes, bipartisan permitting reform, which could accelerate the buildout of all kinds of energy projects by shortening their development timelines and helping bring down costs, Xan Fishman, senior managing director of the energy program at the Bipartisan Policy Center, told Heatmap. “Whether you care about energy and costs and affordability and reliability or you care about emissions, the next priority should be permitting reform,” he said.
And Godfrey hasn’t given up on tax credits as a viable tool at the federal level, either. “If you told me in mid-November what this bill would look like today, while I’d still be like, Ugh, that hurts, and that hurts, and that hurts, I would say I would have expected more rollbacks. I would have expected deeper cuts,” he told Heatmap. Ultimately, many of the Inflation Reduction Act’s tax credits will stick around in some form, although we’ve yet to see how hard the new foreign sourcing requirements will hit prospective projects.
While many observers ruefully predicted that the letter-writing moderate Republicans in the House and Senate would fold and support whatever their respective majorities came up with — which they did, with the sole exception of Pennsylvania Republican Brian Fitzpatrick — the bill also evolved over time with input from those in the GOP who are not openly hostile to the clean energy industry.
“You are already seeing people take real risk on the Republican side pushing for clean energy,” Safford said, pointing to Alaska Republican Senator Lisa Murkowski, who opposed the new excise tax on wind and solar added to the Senate bill, which earned her vote after it was removed.
Some damage has already been done, however. Canceled clean energy investments adds up to $23 billion so far this year, compared to just $3 billion in all of 2024, according to the decarbonization think tank RMI. And that’s before OBBBA hits Trump’s desk.
The start-and-stop nature of the Inflation Reduction Act may lead some companies, states, local government and nonprofits to become leery of engaging with a big federal government climate policy again.
“People are going to be nervous about it for sure,” Safford said. “The climate policy of the future has to be polycentric. Even if you have the political opportunity to make a big swing again, people will be pretty gun shy. You will need to pursue a polycentric approach.”
But to Godfrey, all the back and forth over the tax credits, plus the fact that Republicans stood up to defend them in the 11th hour, indicates that there is a broader bipartisan consensus emerging around using them as a tool for certain energy and domestic manufacturing goals. A future administration should think about refinements that will create more enduring policy but not set out in a totally new direction, he said.
Albert Gore, the executive director of the Zero Emissions Transportation Association, was similarly optimistic that tax credits or similar incentives could work again in the future — especially as more people gain experience with electric vehicles, batteries, and other advanced clean energy technologies in their daily lives. “The question is, how do you generate sufficient political will to implement that and defend it?” he told Heatmap. “And that depends on how big of an economic impact does it have, and what does it mean to the American people?”
Ultimately, Fishman said, the subsidy on-off switch is the risk that comes with doing major policy on a strictly partisan basis.
“There was a lot of value in these 10-year timelines [for tax credits in the IRA] in terms of business certainty, instead of one- or two- year extensions,” Fishman told Heatmap. “The downside that came with that is that it became affiliated with one party. It was seen as a partisan effort, and it took something that was bipartisan and put a partisan sheen on it.”
The fight for tax credits may also not be over yet. Before passage of the IRA, tax credits for wind and solar were often extended in a herky-jerky bipartisan fashion, where Democrats who supported clean energy in general and Republicans who supported it in their districts could team up to extend them.
“You can see a world where we have more action on clean energy tax credits to enhance, extend and expand them in a future congress,” Fishman told Heatmap. “The starting point for Republican leadership, it seemed, was completely eliminating the tax credits in this bill. That’s not what they ended up doing.”