Elon Musk’s SpaceXAI has built what may be the biggest battery in the U.S. at its controversial Memphis AI computing hub. The exact size of the battery is unclear. Canary Media counted 720 Tesla Megapack battery containers visible on the grounds of the Colossus 2 data center in satellite imagery dated July 11. That…

There’s never been a better time to build energy storage in the U.S. than right now. Grid batteries — which sop up power when it’s abundant and discharge that energy when it’s needed — have been ascendant for a decade, as the price of the underlying lithium-ion cells fell precipitously . Bolstered by plummeting…

Last summer, when the Republican-controlled Congress took a wrecking ball to the Inflation Reduction Act, Tom Matzzie was pissed. Though some Republican members of Congress had written letters trying to save wind and solar tax credits, when it came time to vote, they nearly all fell in line behind President Donald…

A thousand solar roofs per week. That was the pace Elon Musk predicted Tesla would install its electricity-generating roof tiles in 2020, more than three years after he unveiled the product to great fanfare on the set of the TV show Desperate Housewives. That estimate fell flat. Tesla managed to install a total of…

California and Texas have led the charge on America's grid battery revolution . Now, a third state is racing to catch up: Arizona. The Grand Canyon State installed more battery capacity than every state besides Texas over the first half of 2026, per a Canary Media analysis of U.S. Energy Information Administration…

It's almost an ironclad law: Over time, wind turbines get taller, better, and more cost-effective. A new proposed project in the U.K. demonstrates that. ScottishPower recently announced its intention to repower the U.K.’s largest onshore wind farm, a process that will involve replacing old turbines with…

A far-reaching new tariff on solar imports promises to both raise the cost of installing the clean energy source and strengthen efforts to reshore solar manufacturing. The White House announced the new tariffs Thursday on imported polysilicon and related products, including silicon-based solar panels and their…

Home battery startup Base Power seems constitutionally incapable of standing still. After raising $1 billion last October, the Texas company has raised another $1 billion, and upped its valuation from $4 billion to $13 billion. The latest investment, led by Ribbit, Addition, Valor Equity Partners, and…

Just northeast of Columbus, Ohio, the leafy Main Street of New Albany gives way to lush green fields and agrarian ponds — but soon the countryside transitions into mile after mile of enormous white boxes that emit a low hum. This patch of former farmland has become one of the densest clusters of AI computing in the…

So, how’s that clean energy transition going? It’s the essential inquiry that drives anyone reporting on climate solutions, and it got considerably more difficult to answer after President Donald Trump returned to the White House. He’s done everything in his power (and some things that legally aren’t ) to undercut…

A hands-on form of solar power has electrified the U.S. in the past year. Plug-in solar lets anyone hang a few panels in the sunlight and send the power straight into their wall sockets to partially offset their utility bill. It extends the benefits of clean energy, a little bit at a time, to renters and anyone else…

Longtime solar developer Cypress Creek Energy has not only broken ground on what could be the largest solar-plus-storage plant in the country, but also secured a blue-chip customer to pay for the clean power. Google will buy all the electricity from the first two phases of the forthcoming Steel River Energy Center…

Startup Peak Energy launched in 2023 with a promise to bring the up-and-coming sodium-ion battery chemistry to American shores. Now, it’s building a gigafactory in Sacramento, California, that will be the country’s first to produce sodium-ion battery storage plants for the grid. If Peak Energy succeeds in its…

This story was reported and published in collaboration with Hawaiʻi Public Radio . On June 8, 2015, Gov. David Ige sat under the great seal of the state of Hawaiʻi and signed the nation’s first legal commitment to run an entire state’s grid system on 100% renewable electricity. Ige, a Democrat, lamented that…

PJM Interconnection, which serves 67 million people across 13 states from the mid-Atlantic to the Midwest, has become a poster child for how not to keep up with soaring energy demand. Startup Base Power is taking a whack at that problem by installing a network of unusually large home batteries in one corner of that…

This year has been full of dramatic rivalries. World Cup matchups, Knicks versus Spurs, One Battle After Another versus Sinners at the Oscars, and now California solar power versus natural gas. For years, natural gas has dominated electricity production in the climate-conscious Golden State, just as it has…

As spring gives way to summer, many parts of the U.S. are already feeling the heat. It’s a good moment to take stock of the energy breakthroughs that transpired this past “shoulder season.” That’s the period of time between the chill of winter and the high temperatures of July and August, when renewable energy…

Qcells has officially begun commercial production of silicon solar cells at its factory in Cartersville, Georgia, the company said Tuesday. That factory is the largest of its kind in the country — and a long-awaited boost to the U.S. solar supply chain. For five years straight , the U.S. power sector has built more…

On June 1, the Tumbleweed project in California’s Kern County became the first major battery installation in the U.S. that can discharge power for up to eight hours at a time — twice as long as typical energy-storage facilities. The U.S. power sector now builds more battery storage capacity than any other form of…