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Warren Buffet, the chairman of Berkshire Hathaway and investing folk hero, has long had a rule for picking which companies to invest in.
“The most important thing [is] trying to find a business with a wide and long-lasting moat around it … protecting a terrific economic castle with an honest lord in charge of the castle,” he told a CNBC crowd in 1995. He has embellished the metaphor over the years — in some versions, sharks populate the moat — but the idea is the same. Seek out companies with a natural competitive advantage, even an inherent monopoly, and prosperity will follow.
For decades, investor-owned gas and electricity utilities have struck Buffett as businesses with a good moat. Over the years, Buffett has bought up a handful of utilities, including MidAmerican Energy Company in the Great Plains, NV Energy in Nevada, and PacifiCorp in the Mountain West and Pacific Northwest. Their climate record is mixed: The Berkshire utilities generate more power from renewables than the national average, but still operate several coal plants in Utah and Wyoming. Berkshire Hathaway says its utilities and pipeline companies serve about 12 million end customers in North America and the United Kingdom.
But Buffett’s faith in for-profit utilities as a sound and stable business is failing. In his latest letter to investors — an annual tradition known for its plain writing and folksy anecdotes — Buffett says that the future of for-profit utilities looks more ominous. Climate change and what he sees as higher regulatory standards are making it harder for utilities to make money, he says.
He’s speaking in part from personal experience. Last year, an Oregon jury found PacifiCorp liable for negligence that resulted in the start of four wildfires during Labor Day weekend in 2020. A series of “mini-trials” have since awarded at least $175 million to the fires’ victims, with more trials yet to come. These results didn’t take Berkshire Energy into the red — Berkshire’s utility businesses earned $2.3 billion last year — but it did result in much worse financial performance than 2022.
In his letter, Buffett says that “most” of the company’s utility businesses have done as expected. But he adds:
[T]he regulatory climate in a few states has raised the specter of zero profitability or even bankruptcy (an actual outcome at California’s largest utility and a current threat in Hawaii). In such jurisdictions, it is difficult to project both earnings and asset values in what was once regarded as among the most stable industries in America.
For more than a century, electric utilities raised huge sums to finance their growth through a state-by-state promise of a fixed return on equity (sometimes with a small bonus for superior performance). With this approach, massive investments were made for capacity that would likely be required a few years down the road. That forward-looking regulation reflected the reality that utilities build generating and transmission assets that often take many years to construct. BHE’s extensive multi-state transmission project in the West was initiated in 2006 and remains some years from completion. Eventually, it will serve 10 states comprising 30% of the acreage in the continental United States.
With this model employed by both private and public-power systems, the lights stayed on, even if population growth or industrial demand exceeded expectations. The “margin of safety” approach seemed sensible to regulators, investors and the public. Now, the fixed-but-satisfactory return pact has been broken in a few states, and investors are becoming apprehensive that such ruptures may spread. Climate change adds to their worries. Underground transmission may be required but who, a few decades ago, wanted to pay the staggering costs for such construction?
At Berkshire, we have made a best estimate for the amount of losses that have occurred. These costs arose from forest fires, whose frequency and intensity have increased – and will likely continue to increase – if convective storms become more frequent.
He later continues:
Whatever the case at Berkshire, the final result for the utility industry may be ominous: Certain utilities might no longer attract the savings of American citizens and will be forced to adopt the public-power model. Nebraska made this choice in the 1930s and there are many public-power operations throughout the country. Eventually, voters, taxpayers and users will decide which model they prefer. When the dust settles, America’s power needs and the consequent capital expenditure will be staggering. I did not anticipate or even consider the adverse developments in regulatory returns and, along with Berkshire’s two partners at BHE, I made a costly mistake in not doing so.
As has been noted elsewhere, Buffett is criticizing government regulation in this letter. But even if he has reached his conclusion spitefully, it is not necessarily wrong. In the coming years, America’s utilities will have to overhaul their infrastructure to decarbonize their power plants while also girding themselves against climate change’s effects. Both projects are expensive.
For years, most public officials have more or less assumed that the for-profit model is the best way to ensure such maintenance and upgrading get done in a timely and efficient fashion. But that may no longer be feasible or desirable.
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Clean energy stocks were up after the court ruled that the president lacked legal authority to impose the trade barriers.
The Supreme Court struck down several of Donald Trump’s tariffs — the “fentanyl” tariffs on Canada, Mexico, and China and the worldwide “reciprocal” tariffs ostensibly designed to cure the trade deficit — on Friday morning, ruling that they are illegal under the International Emergency Economic Powers Act.
The actual details of refunding tariffs will have to be addressed by lower courts. Meanwhile, the White House has previewed plans to quickly reimpose tariffs under other, better-established authorities.
The tariffs have weighed heavily on clean energy manufacturers, with several companies’ share prices falling dramatically in the wake of the initial announcements in April and tariff discussion dominating subsequent earnings calls. Now there’s been a sigh of relief, although many analysts expected the Court to be extremely skeptical of the Trump administration’s legal arguments for the tariffs.
The iShares Global Clean Energy ETF was up almost 1%, and shares in the solar manufacturer First Solar and the inverter company Enphase were up over 5% and 3%, respectively.
First Solar initially seemed like a winner of the trade barriers, however the company said during its first quarter earnings call last year that the high tariff rate and uncertainty about future policy negatively affected investments it had made in Asia for the U.S. market. Enphase, the inverter and battery company, reported that its gross margins included five percentage points of negative impact from reciprocal tariffs.
Trump unveiled the reciprocal tariffs on April 2, a.k.a. “liberation day,” and they have dominated decisionmaking and investor sentiment for clean energy companies. Despite extensive efforts to build an American supply chain, many U.S. clean energy companies — especially if they deal with batteries or solar — are still often dependent on imports, especially from Asia and specifically China.
In an April earnings call, Tesla’s chief financial officer said that the impact of tariffs on the company’s energy business would be “outsized.” The turbine manufacturer GE Vernova predicted hundreds of millions of dollars of new costs.
Companies scrambled and accelerated their efforts to source products and supplies from the United States, or at least anywhere other than China.
Even though the tariffs were quickly dialed back following a brutal market reaction, costs that were still being felt through the end of last year. Tesla said during its January earnings call that it expected margins to shrink in its energy business due to “policy uncertainty” and the “cost of tariffs.”
Alphabet and Amazon each plan to spend a small-country-GDP’s worth of money this year.
Big tech is spending big on data centers — which means it’s also spending big on power.
Alphabet, the parent company of Google, announced Wednesday that it expects to spend $175 billion to $185 billion on capital expenditures this year. That estimate is about double what it spent in 2025, far north of Wall Street’s expected $121 billion, and somewhere between the gross domestic products of Ecuador and Morocco.
This is a “a massive investment in absolute terms,” Jefferies analyst Brent Thill wrote in a note to clients Thursday. “Jarringly large,” Guggenheim analyst Michael Morris wrote. With this announcement, total expected capital expenditures by Alphabet, Microsoft and Meta for 2026 are at $459 billion, according to Jefferies calculations — roughly the GDP of South Africa. If Alphabet’s spending comes in at the top end of its projected range, that would be a third larger than the “total data center spend across the 6 largest players only 3 years ago,” according to Brian Nowak, an analyst at Morgan Stanley.
And that was before Thursday, when Amazon told investors that it expects to spend “about $200 billion” on capital expenditures this year.
For Alphabet, this growth in capital expenditure will fund data center development to serve AI demand, just as it did last year. In 2025, “the vast majority of our capex was invested in technical infrastructure, approximately 60% of that investment in servers, and 40% in data centers and networking equipment,” chief financial officer Anat Ashkenazi said on the company’s earnings call.
The ramp up in data center capacity planned by the tech giants necessarily means more power demand. Google previewed its immense power needs late last year when it acquired the renewable developer Intersect for almost $5 billion.
When asked by an analyst during the company’s Wednesday earnings call “what keeps you up at night,” Alphabet chief executive Sundar Pichai said, “I think specifically at this moment, maybe the top question is definitely around capacity — all constraints, be it power, land, supply chain constraints. How do you ramp up to meet this extraordinary demand for this moment?”
One answer is to contract with utilities to build. The utility and renewable developer NextEra said during the company’s earnings call last week that it plans to bring on 15 gigawatts worth of power to serve datacenters over the next decade, “but I'll be disappointed if we don't double our goal and deliver at least 30 gigawatts through this channel by 2035,” NextEra chief executive John Ketchum said. (A single gigawatt can power about 800,000 homes).
The largest and most well-established technology companies — the Microsofts, the Alphabets, the Metas, and the Amazons — have various sustainability and clean energy commitments, meaning that all sorts of clean power (as well as a fair amount of natural gas) are likely to get even more investment as data center investment ramps up.
Jefferies analyst Julien Dumoulin-Smith described the Alphabet capex figure as “a utility tailwind,” specifically calling out NextEra, renewable developer Clearway Energy (which struck a $2.4 billion deal with Google for 1.2 gigawatts worth of projects earlier this year), utility Entergy (which is Google’s partner for $4 billion worth of projects in Arkansas), Kansas-based utility Evergy (which is working on a data center project in Kansas City with Google), and Wisconsin-based utility Alliant (which is working on data center projects with Google in Iowa).
If getting power for its data centers keeps Pichai up at night, there’s no lack of utility executives willing to answer his calls.
The offshore wind industry is now five-for-five against Trump’s orders to halt construction.
District Judge Royce Lamberth ruled Monday morning that Orsted could resume construction of the Sunrise Wind project off the coast of New England. This wasn’t a surprise considering Lamberth has previously ruled not once but twice in favor of Orsted continuing work on a separate offshore energy project, Revolution Wind, and the legal arguments were the same. It also comes after the Trump administration lost three other cases over these stop work orders, which were issued without warning shortly before Christmas on questionable national security grounds.
The stakes in this case couldn’t be more clear. If the government were to somehow prevail in one or more of these cases, it would potentially allow agencies to shut down any construction project underway using even the vaguest of national security claims. But as I have previously explained, that behavior is often a textbook violation of federal administrative procedure law.
Whether the Trump administration will appeal any of these rulings is now the most urgent question. There have been no indications that the administration intends to do so, and a review of the federal dockets indicates nothing has been filed yet.
The Department of Justice declined to comment on whether it would seek to appeal any or all of the rulings.
Editor’s note: This story has been updated to reflect that the administration declined to comment.