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The latest update to the Electricity Price Hub shows a price increase in line with what regulators predicted.

Hawaii already had the most expensive electricity in the country. Then the war in Iran happened.
America’s 50th state has no domestic fossil fuel industry and no access to the continental United States’ natural gas pipeline network, and is therefore uniquely dependent on imported oil to generate electricity. (The state’s last coal plant shut down in 2022.)
While Hawaii’s electricity prices and household bills have spiked along with oil prices since the United States and Israel attacked Iran in late February, the average electricity bill in Hawaii shot up to $248 in May, compared to an already-high $203 in April, according to the latest data in Heatmap and MIT’s Electricity Price Hub, released Monday. The average price of electricity rose by 6 cents per kilowatt-hour, from 46 cents in April to 52 cents in May. Nationally, average prices stand at around 17.5 cents and are up 3.6% (or just over half a cent) from May of last year, with national average bills of $140 per month up about $6 from a year ago.
Hawaii’s eye-watering prices far outmeasure even the state’s peers in expensive electricity. May bills for California were $137, for instance, while prices were 25 cents per kilowatt-hour. In Massachusetts, where prices have also spiked this spring, they only got to 38 cents per kilowatt-hour. Maine, which has been struggling with high prices thanks to high costs linked to storm recovery, prices in May were 28 cents per kilowatt-hour, up about 10% from a year ago, but down substantially from the 35 cents per kilowatt-hour in February.
The situation in Hawaii was pretty much a foregone conclusion way back in April. Hawaii’s Department of Commerce and Consumer Affairs warned customers that bills from Hawaiian Electric, which serves almost the entire state, would almost certainly go up between 20% and 30% from then through June.
“We told our customers to prepare for potential increases in energy costs in the coming months, driven by rising global oil prices linked to escalating geopolitical tension,” Scott Seu, Hawaiian Electric’s chief executive, said in an April earnings call. “Affordability is a core focus of ours, and affordability pressures have intensified given the recent increase in fuel prices across the globe.”
Some Hawaii ratepayers will have the opportunity to claim a one-time credit on their bills this month as part of an annual rate relief drive by the Hawaii Home Energy Assistance Program. The state program is administered through local nonprofits and provides bill credits for households that claim some form of social assistance, like food stamps or Social Security or disability payments administered through Social Security
The benchmark global oil price was sitting at around $70 per barrel in the weeks leading up to the opening of the U.S.-Israel-Iran war, and is now around $95, down from a high of $118. While Hawaii ratepayers probably won’t feel comforted this is far from the worst-case scenario for runaway oil prices as public and private inventories of oil have largely filled the gaps. If the story of the energy effects of the Iran War in the United States is that some combination of trapped natural gas, inventory releases, and healthy domestic production have made the oil price hike manageable, it may only be in the non-insular United States.
According to analysis of price hub data from our partners at CleanEcon, customers in the Lanai division of Hawaiian Electric’s Maui service area faced an 18 cents per kilowatt-hour rise just from “recovery” for high energy supply prices, a nearly 60% hike, which on its own added $76 to average bills compared to the beginning of this year.
The good news is that due to its famously agreeable climate, Hawaiian households consume little electricity compared to the rest of the country. But with those electricity rates, who can blame them.
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All that cash has to go somewhere. Why not philanthropic funding for decarbonization?
Artificial intelligence models — and the infrastructure to support them — have kept the U.S. economy afloat amidst a turbulent year of tariffs, war, and energy price volatility. Nvidia, the dominant supplier of high-end AI chips, is now the world’s most valuable company. Leading AI firm Anthropic has filed to go public, while reporting indicates that OpenAI will soon follow suit. SpaceX, which is betting heavily on orbital data centers, is also going public this month, in what analysts expect will be the largest IPO in history.
All of which is to say that a lot of people have already become very, very rich from the AI boom, with many more poised to do so very soon. That will almost certainly lead to a wave of philanthropic capital in search of worthy causes. AI safety will obviously be a priority. But given growing concerns over AI’s power needs, reliance on fossil fuel infrastructure, water consumption, and effect on electricity prices, it seems likely that climate and clean energy will become top priorities for newly minted AI billionaires, as well.
“It is not lost on the people who are working on AI that there are big environmental impacts associated with data centers,” Lara Pierpoint, managing director of Trellis Climate, told me. Her organization helps philanthropists and foundations invest in first-of-a-kind climate infrastructure projects that wouldn’t move forward without their support. She expects that the “strong outdoor and environmentally-focused culture” of the Bay Area will also hold sway over these emerging philanthropists.
Nan Ransohoff, Stripe’s head of climate, laid out the scale of this coming capital influx in a recent Substack post: “The OpenAI Foundation holds 26% of OpenAI, worth about $220 billion at today’s valuation. Anthropic’s seven co-founders have pledged to give away 80% of their wealth and have instituted the most aggressive donor matching program for employees in tech history,” she writes.
By Ransohoff’s back-of-the-envelope math, accounting for just the OpenAI Foundation and Anthropic’s co-founders and employees with charitable savings accounts translates to about $37 billion to $100 billion per year in additional philanthropic spending, assuming everyone allocates about 10% of their pledged wealth annually. That could add as much as 17% more philanthropic spending per year compared to what all U.S. donors allocate today. Much of that will likely go toward AI-related risk mitigation. But certainly not all of it.
Though Ransohoff never mentions climate change explicitly in the piece, it can’t have been far from her mind. Ransohoff is the head of Frontier, the Stripe-led coalition of carbon removal buyers using advance purchase agreements to catalyze the nascent market. This is exactly the type of technology — critical to the fight against climate change but expensive and largely lacking a natural market to drive scale-up — that could benefit from philanthropic dollars. A range of other climate mitigation and adaptation efforts fall in this same bucket, including satellite-based methane monitoring, wetlands and mangrove restoration, resilience infrastructure in low-income communities, and even controversial geoengineering efforts such as solar radiation management.
The network of players allocating climate-focused philanthropic spending are well aware of these opportunities, apparently, as Ransohoff’s piece drummed up lots of excitement among my sources. “I think we’ve all been circling around the notion that there will be some additional philanthropy that comes into the picture,” Pierpoint told me. Ransohoff, she said, is just the first to put numbers to the potential scale. “It wasn’t clear even a year ago that all these companies were going to be looking to IPO so soon,” Pierpoint explained. (Ransohoff herself didn’t respond to my request for an interview.)
Now that we’re here, Pierpoint and others certainly have thoughts about where they can put this capital to work. Many see substantial room for improvement in the current philanthropic landscape. “The problem is how it’s structured. It’s more around donor appeasement and gatekeeping and less around results,” climate tech investor Susan Su of Toba Capital told me.
Elemental Impact CEO Dawn Lippert has been working to create a better model for the sector since she founded the philanthropically-funded nonprofit investor in 2009. She describes Elemental’s structure as combining “the mission of a nonprofit with the discipline of an investor and operating posture and talent density of a high-growth startup.” Much like Trellis, Elemental seeks to fill climate tech’s “missing middle” funding gap for first-of-a-kind climate infrastructure projects, which are too costly for venture firms but too risky for traditional institutional investors. That involves leveraging philanthropy to build things like a critical minerals recovery facility and a low-emissions fertilizer production plant that wouldn’t otherwise see the light of day.
“Philanthropy alone won’t close the gap, but philanthropy will be the fuel for the experiments,” Lippert told me. “It’s an art, because it’s not about using philanthropy to subsidize investors, it’s about leveraging philanthropy to build things that otherwise would not happen in the world.
Lippert wants to capitalize on this AI moment not only by harnessing billionaires’ money, but also by treating the data center buildout as a climate tech market opportunity — an approach that appears to resonate with its philanthropic backers. Late last month, Elemental launched the Data Center Innovation Initiative alongside funders such as Breakthrough Energy Discovery, Builders Vision Philanthropy, and Salesforce, aiming to test and commercialize clean tech for data centers that also has broader energy and industrial applications. For example, chip-cooling technologies would be out of scope because they’re too data center-specific, Lippert told me. But developing a new industrial coolant would be right on the money.
Elemental will provide between $500,000 and $5 million to 10 startups through 2027, while the initiative’s tech partners — Amazon, Google, Meta, and Microsoft — will support the companies with strategic guidance and real-world trials in their data centers. Although Elemental has not yet selected the initiative’s cohort, it’s looking to back everything from energy storage to novel cooling solutions and low-carbon building materials.
The highly detailed “funding opportunity guide” that Elemental released for prospective applications outlines the initiative’s priority technology areas and technical targets, offering the kind of clarity and specificity that many in climate philanthropy say is needed to help innovators focus on the sector’s most pressing challenges.
Some noteworthy efforts do already exist on this front. One example is climate philanthropist John Doerr’s Speed & Scale tracker which provides entrepreneurs, business leaders, and policymakers with a detailed assessment of global progress toward ten key climate objectives. Then there’s the more granular Climate Tech Map, an associated resource designed by a coalition of leading climate groups to help innovators identify and design for the technical bottlenecks most critical to the energy transition.
Defining the opportunity space so precisely, including explicit metrics for success, is likely to resonate with those from technical backgrounds. Many of these new donors will likely bring a philanthropic ethos shaped at least in part by the effective altruist movement, which has strong ties to the Bay Area tech community, and has long prioritized the potential existential risks posed by advanced AI systems.
But Aliya Haq, president of the policy-focused nonprofit Clean Economy Project (one of Heatmap’s partners on the Electricity Price Hub), noted that this mental model is “hard to square” with the realities of politics and thus policy advocacy overall. “Politics doesn’t follow a technocratic or data-driven reality, it’s far more about human psychology,” she told me. So while she sees room for a more technocratic approach to climate outcomes and the policies that get us there, “there’s a time where you have to be able to read the room and understand cultural shifts, political shifts, communication shifts, to be able to make those policies happen.”
CleanEcon was born from the ashes of Breakthrough Energy’s climate policy arm, which Bill Gates — the organizations’ founder primary backer — disbanded last year. Today, CleanEcon focuses on advancing policies that accelerate clean energy projects, derisk private investment, and drive down the costs of novel tech. Haq views these efforts as the most effective use of philanthropic dollars, even if all the data in the world can never precisely capture the political winds or what approaches will resonate with legislators and the electorate.
But the climate doesn’t get to choose its philanthropists or their ethos. “Whether or not we think a tech-oriented approach to giving is the right path forward, that will be one of the core elements of what this next wave of philanthropy will look like,” Pierpoint told me. Sectoral experts can help mold and shape the ideologies and whims of philanthropists, however, and there will always likely be a portion of funders deeply invested in exerting political influence, precise efficacy metrics be damned.
Many argue the real work now lies in connecting new donors with climate experts, and in turn, working to embed those experts more deeply within philanthropic foundations and grantmaking or investment institutions. Because while some newly minted rich folks will inevitably start by going it alone, pursuing wild bets or pet projects, Su explained that alongside new funders and builders, the sector really needs “very talented translators to be able to channel that desire to make an impact towards organizations that are in need and that are already making an impact.”
What everyone also seems to agree on is that the new philanthropists must be less risk-averse than the old philanthropists. As Pierpoint puts it, risk-taking “should be the role of philanthropy within this ecosystem — to try things that are hard to do under the existing ecosystem that we have.” Lippert similarly sees philanthropy as “fuel for the experiments” in the climate sector. Let’s hope that it proves to be that fuel, because as this new AI wealth begins to flow through the economy, the opportunity space for philanthropic experimentation might be larger than ever in the coming years.
“The magnitude of dollars is huge, it’s so much bigger than it ever was before,” Su told me. “So you can only think, because these people are so new and fresh to this — and they spent their entire lives thinking in a more innovative way — that maybe that’ll be the difference.”
Current conditions: Des Moines, Iowa, is bracing for thunderstorms through Thursday night • Temperatures in Touggourt, in northern Algeria, are soaring north of 103 degrees Fahrenheit • European forecasters expect the brewing El Niño conditions forming now could become the strongest ever recorded.
Last August, the Internal Revenue Service issued strict new rules for solar and wind developers hoping to tap the federal tax credits known as 45Y, for the production of carbon-free electricity, and 48E, for investment in green generating assets. For years, the U.S. government had required companies to invest 5% of the total cost of the project by a certain deadline to qualify for the rebates. But last summer, the Trump administration eliminated the 5% threshold and instead mandated that projects over 1.5 megawatts in capacity show evidence that physical construction has begun to be eligible for the writeoffs. In all, the new rules “could have been so much worse,” Heatmap’s Emily Pontecorvo wrote at the time. But requiring construction to start narrowed the scope of how many turbines and panels could be built before the two tax credits are phased out this July 4. With less than a month to go before the credits go away, a federal court has intervened to restore the original 5% rules. On Saturday, the U.S. District Court for the District of Columbia overturned the Internal Revenue Service’s strict new rules. The decision found that the Trump administration had repeatedly failed to back up its justifications for eliminating the 5% provision, consider reasonable alternatives, or demonstrate that the policy change wasn’t motivated by discriminatory views of the wind and solar sectors. “Evidence in the record leaves substantial doubt that the proffered explanation sincerely accounts for the agency’s decision,” the ruling reads. “A thorough review of the record undercuts the conclusion that the defendants made a reasoned decision to eliminate the 5% safe harbor for wind and large-scale solar projects based on concerns about stockpiling.”
While significant, the decision — which was effective immediately — doesn’t change the Trump administration’s restrictions on using tax credits for projects made with Chinese imports. And Crux Climate, the tax credit marketplace, cautioned that few developers may be able to spring into action to seize on the ruling in the next 26 days before the rebates officially end.
New York State lawmakers passed a one-year moratorium on new data center construction that would pause permits on the facilities and require the state to create new rules on energy use, community investment, and labor standards for server farms. But News10, Albany’s ABC affiliate, warned that Governor Kathy Hochul, a Democrat, had not yet indicated whether she would sign the bill.
The move came as NBC News reported that Illinois Governor JB Pritzker, another Democrat, outlined plans to temporarily halt tax breaks to data centers ahead of a call to state lawmakers to come up with a new framework for how the facilities should be developed. The data center backlash, as Heatmap’s Robinson Meyer wrote, is becoming impossible to miss, with roughly 70% of Americans now opposing server farms built near their homes. More than 60% of Americans now support placing a moratorium on data center construction.

Desalination, as my colleague Katie Brigham put it in March, is “having a moment.” It’s not hard to see why. The San Diego County Water Authority is generating so much water from a desalination plant the utility opened a decade ago that it has not only ended its own shortfalls, it has produced a surplus. Now, as a result, the California city is poised to sell some of its rights to Colorado River water to Arizona and Nevada under the first large-scale deal to trade water between the states entitled a share of what flows through the nation’s fifth-longest river. The agreement highlights how desalination could “help parched inland states fill a widening gap between water supply and demand,” The New York Times reported.
It’s a welcome development. Just last week, experts told the Utah News Dispatch that the Colorado River’s largest reservoirs are approaching a “system crash.”
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New York’s Legislature might have backed its Democratic governor’s bid to weaken the state’s climate law, but Rhode Island is taking a different approach. Lawmakers in New England’s smallest state rejected Democratic Governor Dan McKee’s proposal to slash Rhode Island’s climate programs in the name of affordability. On Friday, E&E News reported that the state budget lawmakers advanced last week nixed the changes to clean energy policies.
In January, the United Kingdom, Norway, and several major European Union nations including Germany and Denmark agreed to a pact to build out a sweeping array of wind turbines in the North Sea, turning the waterway into “the world’s largest clean energy reservoir.” If the pledge holds, roughly 11% of the 222,000-square-mile sea could be covered in turbines. That’s the finding of a new study from Heriot-Watt University in Scotland. Under the current target, the North Sea would host a total of about 19,400 turbines by the middle of this century. By 2030, the U.K. alone is on track to have roughly 4,200 turbines, followed by Germany with about 2,700, and the Netherlands with 1,700, according to Renewables Now. The Dutch would claim the highest offshore wind density, with wind farms covering around 19% of its North Sea waters by 2050, followed by Belgium at 18%.

There’s been much ado about Chinese electric vehicles being built in Mexico. But on Sunday, Mexican President Claudia Sheinbaum unveiled the Olinia — a 100% domestically designed electric van that looks a bit like Toyota’s Kayoibako EV minivan. In a post on X, she proudly called it “the electric car created by young Mexican women and men.” The name harkens to the Nahuatl word for “movement.”
Just look at Heatmap’s latest poll results.
A few times a year, Heatmap News surveys a few thousand Americans on the biggest questions driving the world of energy, environment, and climate change. We’ve spent the past few days writing up the results of our latest poll, which was in the field in late May and which I thought was particularly striking.
It’s worth taking a step back to look at the biggest results together, because the American view of data centers is essentially in free fall:
The upshot of these findings: The public‘s turn against artificial intelligence and AI infrastructure is real, widespread, and cross-partisan. It doesn't matter whether Americans started out tolerating data centers or having no opinion about them; they now seem to resent them en masse.
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These results also suggest Americans see little distinction between data centers as energy users and data centers as the physical embodiment of AI and Big Tech. At Heatmap, we can be a wonky and energy-focused bunch, and so we tend to think about data centers primarily as large-scale electricity users. I think most approaches to come up with “data center policy” do the same. We know data centers are distinctive in some ways, of course — an AI data center might require more on-site batteries or power generation than, say, an EV factory — but fundamentally it is just another air polluter, large-scale power user, and light-industrial land user.
But the public does not see things this way. Americans understand data centers in the context of the much broader AI policy conversation about jobs, growth, alignment, and even human extinction. And so, I should add, do politicians: Senator Bernie Sanders has framed his data center moratorium proposal as a response to rapid AI development as much as anything having to do with energy affordability. For that reason, I wonder how long the distinction between these two policy conversations — data centers here, and AI policy over there — can persist.
One last thought on this topic: Is the public’s resentment starting to affect the AI boom overall? I think it might be. It was hard for me not to think of our polling results — or our analysis of canceled data center projects — as I read about a recent JPMorgan analysis that found America’s data center boom is “falling way behind schedule,” in the words of The Wall Street Journal. More than 60% of the data center capacity that is supposed to come online next year has yet to break ground, according to the bank; another 7% is “delayed.”
That’s partially due to equipment and labor shortages, but it also might be what a siting-and-permitting bottleneck would look like. Much like renewable developers or venture capitalists, data center developers work by picking a number of sites and trying to develop on all of them. If only a few sites work out, they’re still in the money. But if a falling share of projects are working out — if building anything, anywhere, is getting harder, everywhere — then it might materialize as delays.