Tesla is expanding ties with South Korea’s LG Energy Solution, striking a deal to buy $4.3 billion worth of battery cells for energy storage systems that will be made in Lansing, Michigan.

The plant was formerly developed for a joint venture between LG and General Motors before the automaker decided to retreat from that initiative in late-2024, selling its stake to LG as part of a pullback in the automaker’s electric vehicle investments.

While Tesla still makes most of its revenue from EVs, the company is investing in its more rapidly growing energy business, as data centers drive up electricity demand. Tesla’s Megapacks can store power produced using intermittent sources like solar or wind, or during off-peak hours, then make it available for use when demand is high.

Tesla currently sells Powerwall backup batteries for residential use with its solar installations, and much larger Megapack and Megablock systems for utility-scale power storage. Last year, revenue in the company’s energy segment increased 27% to $12.8 billion, accounting for 13% of total revenue. Total revenue dropped due to a 10% decline in the auto business.

Details of the Tesla-LG partnership were announced during an Indo-Pacific Energy Security Summit in Japan, according to a release from the U.S. Department of the Interior. The Trump administration announced a total of $56 billion in private sector commitments at the event.

A spokesman with LG Energy Solution said the company “will establish dedicated production lines at our Lansing facility to deliver on this agreement.” LG last year retooled the facility to build LFP (lithium iron phosphate) prismatic cells, later confirming a $4.3 billion deal with an unnamed company.

GM continues to have a significant presence in and around the Lansing battery plant, but the company has largely retrenched from the EV market, announcing $7.6 billion in related write-downs.

Tesla, meanwhile, expects its energy business to “have very high growth for as far into the future as we can imagine,” CEO Elon Musk said during the company’s fourth-quarter earnings call in January. Chief Financial Officer Vaibhav Taneja cautioned that the energy segment expects “margin compression” from low-cost competition and the cost of tariffs.

Tesla’s competition includes companies like BYD in China and climate-tech startups like Form, which is making iron-air batteries, and others.

WATCH: Why the EV factory boom in the U.S. south is suddenly in trouble

Just outside Ireland’s capital, Dublin, a data center has become the first in Europe to turn to an independent, so-called “islanded,” microgrid to keep its servers running.

Europe is looking to cash in on the AI boom while tackling power connection delays that have persisted for decades. The European Commission estimates the bloc needs at least 1.2 trillion euros ($1.39 trillion) in investments by 2040. In some cases, companies can’t wait for bottlenecks to be eased and are turning to their own sources of power.

The Dublin facility, operated by power supply solutions provider AVK and digital infrastructure developer Pure Data Centre Group, could mark the continent’s first step toward a privately powered ecosystem.

Microgrids are localized energy systems that can generate, store, and distribute power. The systems are already being widely used in the U.S., where a boom in data centers in red-hot areas like Texas and Virginia has seen an increasing need for off-grid power.

AVK and Pure DC say their Dublin installation is the first data center in Europe to be operated by a live microgrid.

“As these data centers get bigger and we see AI workloads and that data becoming more of a feature in our day-to-day lives, that only puts more stress on the grid. So we have to drive to a different solution,” AVK CEO Ben Pritchard told CNBC.

The systems are not without their challenges. Regulatory hurdles could slow deployment, and the long-term success of microgrids likely depends on whether their power sources are both reliable and sustainable.

Ireland is one of two European countries to have enforced a moratorium on new data center applications as the energy-intensive facilities put pressure on the nation’s grid. The facilities consumed a staggering 22% of the small country’s power in 2024.

Ireland’s national grid operator warned in late February that meeting power demand could be “challenging” as consumers use electricity in new ways. It identified data centers as a key driver of that demand growth.

But late last year, Irish authorities eased the moratorium, as the AI boom saw sentiment U-turn on their economic potential.

All new data centers connecting to the grid must now provide dispatchable power — electricity that can be turned on or off depending on the national grid’s needs — or have the capacity to store energy. They must also source at least 80% of annual demand from renewable electricity generated in Ireland, according to guidelines set by the country’s regulator CRU.

“The alternative in Ireland was to wait, literally wait for an unknown time to be able to get a grid connection, and still today you’re not able to get a grid connection. So creating a microgrid enabled us to move our project forward,” Pure DC President Dawn Childs told CNBC.

Childs, who was appointed a Dame in the U.K. for her services to engineering, added that the project is intended as both an immediate and a long-term solution. “If we have to stay as an islanded solution, we absolutely can … However, to get the most sustainable solution and to provide services back into the grid in Dublin, in the most constrained area of Ireland, it would be our desire to get a grid connection.”

The Dublin data center, which can run both cloud and AI workloads, has a total capacity of about 110 megawatts. Total projected investment in the site is about 1 billion euros ($1.2 billion).

The facility is currently powered by natural gas engines with the ability to switch to Hydrotreated Vegetable Oil (HVO). The site has also trialled biomethane as a power source.

If the Dublin data center does eventually secure a grid connection, it will be able to offer dispatchable power and provide up to 20 MW of battery storage, Childs said.

The global microgrid market was worth around $29 billion in 2025, with Europe’s market expected to grow by nearly 10% per year due to its aging infrastructure, according to estimates from Global Market Insights. While investments are made in modernizing the national grid, companies are expected to increasingly turn to more immediate solutions for power.

Microgrids are already being used to power industrial sites and plants in Europe, but there aren’t many instances of them powering data centers when compared to the U.S.

In addition to AVK, companies such as ABB and Siemens are racing to develop the technology, with Schneider Electric opening a microgrid testing lab in Massachusetts last year to test the systems in real-world conditions.

Siemens sees “potential opportunities” for implementing microgrids at data center locations and is currently in discussions with several customers, a company spokesperson told CNBC. The topic is particularly relevant for the U.S. market, but it is also having similar discussions in Europe, they said.

Siemens is also interested in the use of microgrids to support electric vehicle charging infrastructure and port decarbonization.

AVK, which is expected to reach at least a billion-dollar valuation by 2030, initially focused on standby and backup power generation before expanding to become a full power solutions provider.

According to the company’s CEO, discussions and plans for microgrids were underway in Europe, but the U.S. market quickly overtook the 27-nation bloc. “It’s just that the U.S. has such a high demand that we’ve seen the rollout a little bit quicker than we’ve seen here in Europe,” Pritchard told CNBC, adding that the company is now seeing a new type of investor who is specifically interested in microgrids and not necessarily the data center itself.

“They’re infrastructure funds who are looking to build, own and operate microgrids and supply power to the data centers,” Pritchard said. He expects this type of asset class to mature over the next three to five years.

One of the biggest challenges facing the market is how microgrids are deployed sustainably, as much of the discussion on the tech has revolved around the use of gas turbines or fuel cells, Diego Diaz Hernandez, a partner at McKinsey, told CNBC.

“Making these assets grid participants in theory and in practice are very different questions,” Diaz Hernandez said.

“Technically speaking, it’s very feasible to do so, and we’ve seen examples of that in the U.S. [where] grid operators are requiring 50 or even 100 hours of flexibility out of the entire year in order to ease the pressure on the grid. So they’re not asking for a lot, but actually having the regulation and policy in place to allow for that to happen is a big question.”

Ensuring the power supply is reliable, as well as overcoming regulation, will also be key, Hernandez said. He noted that in the U.S., around 30% of data centers are adopting microgrid or other behind-the-meter solutions, like fuel cells and gas turbines — power sources that don’t require a connection to the main grid. In Europe, the share was just 5–10% 18 months ago, but has since already risen to about 20%, he added.

Challenges aside, the burden on data centers to provide their own sources of power is clearly growing. Last week, U.S. President Donald Trump said data centers “need some PR help” amid concerns about their impact on electricity prices.

With Elon Musk’s xAI planning to build a massive, natural-gas burning power plant in Southaven, Mississippi, the state’s environmental authority has scheduled a board meeting for Tuesday — Election Day for the 2026 primaries — to decide whether to grant the company key permits.

The NAACP and other civil rights and environmental advocates tried to get the meeting delayed, arguing that it was being rushed and would conflict with some residents’ efforts to vote. The groups also said that by holding the meeting in Jackson, nearly 200 miles away from Southaven, those directly affected by the plant are impeded from attending.

“This is not only a civic duty conundrum, but an unnecessary financial burden to Black residents and individuals who live in low-income and other communities near the facility,” the NAACP wrote in a letter to the Mississippi Department of Environmental Quality (MDEQ) that’s dated March 8, but was released publicly on Monday.

They asked that the hearing be rescheduled and moved to a site closer to the proposed facility.

The MDEQ denied the request on Monday, writing in a response to the NAACP that its permit board “regularly meets on the second Tuesday of each month, which has been the standard practice for decades,” and that the regulator, “considers matters on a statewide basis.” A copy of the letter was shared with CNBC.

The meeting is set to take place a little over a month after Musk merged xAI with SpaceX, his reusable rocket company, in a transaction that valued the combined entity at $1.25 trillion. Since starting xAI in 2023, Musk has tried to turn the AI company into an OpenAI competitor in the booming generative AI market.

Training and running AI models requires hefty amounts of compute and power, and rising utility bills have been partly blamed on the massive electricity consumption of new data centers. At a meeting last week with the White House, execs from tech companies, including xAI, signed non-binding pledges to supply their own power for their facilities.

So far, xAI has relied on its Colossus 1 and Colossus 2 data centers in Memphis, Tennessee, just across the Mississippi state line. In Southaven, a roughly 15 minute drive from Memphis, xAI is investing in the proposed power plant, and a large data center dubbed Macrohardrr.

Following the MDEQ’s response on Monday, the NAACP said in a statement that by having the hearing the morning of Election Day, three hours away from the community, “their actions speak volumes.”

“They’re trying to sneak xAI’s data center into the community’s backyard and they don’t care about the people living there,” the letter said.

In February, the NAACP filed a notice of intent to sue xAI over alleged Clean Air Act violations in Southaven.

As CNBC previously reported, residents in the area say they’ve endured round-the-clock noise pollution, and are concerned about air quality and public health issues from xAI’s use of “temporary” natural gas-burning turbines. Research by scientists at the University of Tennessee found that xAI’s earlier turbine use added to air pollution woes in Greater Memphis.

At a public hearing on Feb. 17 in Southaven, about 200 residents turned out to implore state and local officials to deny xAI authorization to rapidly build out data and power infrastructure without greater transparency, community engagement and effective efforts to prevent noise and air pollution.

Physicians, parents, teachers and local officials spoke out at the hearing.

“We are slowly falling out of love with where we have decided to grow our family,” said Taylor Logsdon, a mother of three, citing pollutants, noise levels and negative health effects. “It’s no coincidence that this is happening now. And I feel it will only get worse.”

A recent investigation by Floodlight showed that xAI has been operating more than a dozen “temporary” turbines concurrently in Southaven, as it previously did in Memphis. The company has argued that the turbines did not require federal permits, but environmental compliance experts have disagreed.

Community pushback and regulatory requirements are among the factors driving Musk and other tech executives to explore the potential of data centers in space.

WATCH: SpaceX takes on xAI cash burn after merger

A prolonged surge in natural gas prices triggered by the ongoing war in the Middle East risks denting European growth and hitting some Asian economies hard, analysts have warned.

Global gas prices have soared this week amid fears of a lengthy disruption to energy flows through the Strait of Hormuz — a key shipping route running between Oman and Iran that handles about one-fifth of global LNG trade — as the Iran conflict escalates.

Dutch Title Transfer Facility (TTF) futures, Europe’s benchmark gas contract, rose 35% on Tuesday to more than 60 euros ($69.64) per megawatt-hour. On the week, prices are around 76% higher.

The Northeast Asia LNG benchmark, the Japan-Korea-Marker (JKM), which captures deliveries to Japan, Korea, China and Taiwan, reached a one-year high, and was last seen around 43 euros per megawatt-hour. U.K. natural gas was also sharply higher.

Qatar, one of the world’s largest LNG producers, halted production on Monday following Iranian drone strikes at Ras Laffan Industrial City and Mesaieed Industrial City. Goldman Sachs estimated the pause will reduce near-term global LNG supply by about 19%.

A senior Iranian Revolutionary Guard official later said the country had closed the Strait of Hormuz to all ships, and warned that any vessel attempting to pass through the channel would be attacked. The U.S., however, said the route remained open, according to a Fox News report.

Europe and much of Asia are more heavily exposed to potential gas price shocks than the U.S., which benefits from both domestic shale and LNG production.

Around 25% of Europe’s total gas supply is LNG, according to Chris Wheaton, oil and gas analyst at Stifel. With roughly 20% of global LNG production sitting behind the Strait, a prolonged disruption could trigger a supply squeeze comparable to the 2022 shock following Russia’s invasion of Ukraine, he said in a note.

“We are much more concerned about European gas prices than we are about oil prices,” Wheaton said.

Shares of Norwegian energy giant Equinor, one of Europe’s largest natural gas suppliers, hit a 52-week high on Tuesday, adding more than 2%, after closing the previous session up more than 8%.

Democratic Sen. Elizabeth Warren is calling President Donald Trump’s bluff after he claimed to be “ending” the affordability crisis during his State of the Union address, opening a new front in the battle that could determine November’s midterm elections.

“Your claims are directly at odds with the day-to-day experiences of American households, who are struggling with rising costs of essentials, including food, housing, health care, child care, and electricity,” Warren, D-Mass., wrote in a letter to Trump, which was shared exclusively with CNBC after being sent late Wednesday. 

“Despite your claims, you have not ‘solved’ affordability or ‘defeated’ inflation. Instead, over the past year, prices have skyrocketed for American households,” Warren, the top Democrat on the Senate Banking Committee, wrote.

Warren’s letter is the launching point for a frontal assault on Trump and congressional Republicans ahead of the 2026 midterms, which could be decided over affordability. Trump’s approval rating on the economy has plummeted as voters express concern about the high cost of living, a contrast with an economy he said was “roaring” during his State of the Union address. 

Now, Democrats are hoping to seize the opportunity to leverage affordability and kick Republicans out of power in Congress. Warren made clear the letter is only her first foray into knocking the president on affordability, as Democrats race around the country selling their economic message before November. 

“Over the coming weeks, I will be writing to Administration officials, companies, and industry representatives directly about your chaotic tariffs and failed economic policies — seeking answers for the American people who are being forced to pay more on everything from groceries to housing,” Warren said.

Warren late Wednesday also sent a letter to Amazon CEO Andy Jassy saying the online retailer was tardy in publicly saying that Trump’s tariffs had contributed to price increases on its platform since their enactment. She also asked Amazon to respond to a series of questions about its future plans on price hikes given Trump’s pledge to find ways tariffs in place. 

Trump has at times suggested he is getting serious about addressing affordability concerns. He’s called for a cap on interest on credit cards, which he did not mention in his speech. He’s also called for a ban on institutional investors from buying homes, which he did mention. Both are also priorities of Warren’s and the progressive left.

But in his State of the Union address, Trump laid blame solely on Democrats for affordability and argued his administration has solved the problem, as polls consistently show increased economic concern from voters. 

“You caused that problem,” the president said. “They knew their statements were a dirty, rotten lie. Their policies created the high prices, our policies are rapidly ending them.”

While overall inflation has cooled significantly from recent highs, the cost of many everyday goods remains high, especially compared to before the Covid-19 pandemic. Electricity prices have skyrocketed amid increased demand from data centers, grocery prices remain high and housing costs have remained inflated. Trump’s tariff agenda has also contributed to lingering high prices. 

Trump doubled down on issuing tariffs through other means during his address, after the Supreme Court knocked down the authority he had been using to implement them. 

The tariffs will “remain in place under fully approved and tested alternative legal statutes,” he said. 

To Warren, that only provided ammunition. 

“Rather than providing relief to consumers, you are pursuing additional across-the-board tariffs through other mechanisms — opening the door to yet another wave of price hike,” she said in her letter.