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Sparks

Why Are AI Stocks Falling Again?

Microsoft is canceling data center leases, according to a Wall Street analyst.

Matthew Zeitlin •
03/27/2025
Microsoft headquarters.
Heatmap Illustration/Getty Images

The artificial intelligence industry is experiencing another TD Cowen shock.

The whole spectrum of companies connected to artificial intelligence — the companies that design the chips, that supply the power, that make the generation equipment — shuddered Wednesday when the brokerage released another note from analysts pointing to evidence that Microsoft was giving up on its data center leases.

“Microsoft has both (1) walked away from +2GW of capacity in both the U.S. and Europe in the last six months that was in process to be leased, and (2) has both deferred and canceled existing data center leases in both the U.S. and Europe in the last month,” the analysts wrote.

Microsoft is one of the biggest players in the artificial intelligence industry, with its near-$14 billion investment in OpenAI and acommitment to spend $80 billion on data center capacity this year.

The company is pulling back, the TD Cowen analysts said, because it had decided not to support incremental increases in training workloads for OpenAI models. Shares in Nvidia, the chip designer that’s become one of the most valuable companies in the world on the back of optimism about artificial intelligence, are down 7% since market close Tuesday, while shares in the power companies Vistra and Constellation are down 9% and 7% respectively. GE Vernova, which makes turbines for gas-fired power plants, is down 9%.

Much of the power industry saw huge increases in their stock prices in 2024, as investors bet on increased demand for electricity from data centers, manufacturing, and electrification. But 2025 so far has been a year of mild expectations.

In February, Cowen analysts issued a similar note warning that Microsoft was pulling back on some of its data center leases. And in January, of course, many of the AI and energy stocks that had been soaring 2024dropped when the Chinese artificial intelligence company DeepSeek released an open source model comparable in performance to the state of the art in the United States but that required far less computing power to train.

The Cowen analysts were hardly doomy about AI and data center construction, writing that Google and Meta may be “backfilling” the capacity left behind by Microsoft as they seek to expand their own data center footprints.

But the case for across the board optimism may be slightly dimming across the sector. CoreWeave, which buys Nvidia chips and operates data centers, has had to reduce the amount of money its seeking to raise in its planned initial public offering to $1.5 billion, from the over $4 billion it was looking to get from investors earlier in the IPO process, Bloomberg reported. Nvidia, an investor in CoreWeave and its most important supplier, will be “anchoring” the IPO, kicking in $250 million.

Matthew Zeitlin profile image

Matthew Zeitlin

Matthew is a correspondent at Heatmap. Previously he was an economics reporter at Grid, where he covered macroeconomics and energy, and a business reporter at BuzzFeed News, where he covered finance. He has written for The New York Times, the Guardian, Barron's, and New York Magazine.

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Sparks

Don’t Look Now, But China Is Importing Less Coal

Add it to the evidence that China’s greenhouse gas emissions may be peaking, if they haven’t already.

Matthew Zeitlin •
05/09/2025
A Chinese coal worker.
Heatmap Illustration/Getty Images

Exactly where China is in its energy transition remains somewhat fuzzy. Has the world’s largest emitter of greenhouse gases already hit peak emissions? Will it in 2025? That remains to be seen. But its import data for this year suggests an economy that’s in a rapid transition.

According to government trade data, in the first fourth months of this year, China imported $12.1 billion of coal, $100.4 billion of crude oil, and $18 billion of natural gas. In terms of value, that’s a 27% year over year decline in coal, a 8.5% decline in oil, and a 15.7% decline in natural gas. In terms of volume, it was a 5.3% decline, a slight 0.5% increase, and a 9.2% decline, respectively.

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Rewiring America Slashes Staff Due to Trump Funding Freeze

The nonprofit laid off 36 employees, or 28% of its headcount.

Katie Brigham •
05/08/2025
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The Trump administration’s funding freeze has hit the leading electrification nonprofit Rewiring America, which announced Thursday that it will be cutting its workforce by 28%, or 36 employees. In a letter to the team, the organization’s cofounder and CEO Ari Matusiak placed the blame squarely on the Trump administration’s attempts to claw back billions in funding allocated through the Greenhouse Gas Reduction Fund.

“The volatility we face is not something we created: it is being directed at us,” Matusiak wrote in his public letter to employees. Along with a group of four other housing, climate, and community organizations, collectively known as Power Forward Communities, Rewiring America was the recipient of a $2 billion GGRF grant last April to help decarbonize American homes.

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Sunrun Tells Investors That a Recession Could Be Just Fine, Actually

The company managed to put a positive spin on tariffs.

Matthew Zeitlin •
05/08/2025
A house with solar panels.
Heatmap Illustration/Sunrun, Getty Images

The residential solar company Sunrun is, like much of the rest of the clean energy business, getting hit by tariffs. The company told investors in its first quarter earnings report Tuesday that about half its supply of solar modules comes from overseas, and thus is subject to import taxes. It’s trying to secure more modules domestically “as availability increases,” Sunrun said, but “costs are higher and availability limited near-term.”

“We do not directly import any solar equipment from China, although producers in China are important for various upstream components used by our suppliers,” Sunrun chief executive Mary Powell said on the call, indicating that having an entirely-China-free supply chain is likely impossible in the renewable energy industry.

Hardware makes up about a third of the company’s costs, according to Powell. “This cost will increase from tariffs,” she said, although some advance purchasing done before the end of last year will help mitigate that. All told, tariffs could lower the company’s cash generation by $100 million to $200 million, chief financial officer Danny Abajian said.

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