A tiny power plant notched a big win last month off the coast of Oregon: For nearly 30 seconds, it generated electricity using the heat of an underwater volcano. The startup Endurance Energy deployed its test unit, called Adélie, about a mile below the surface of the Pacific Ocean during a three-week demonstration…

A global supply shortage and U.S. tariffs have roiled the aluminum market this year, putting greater pressure on the United States to produce more of its own metal. Plans to build or reopen giant smelters are moving forward , but they all hinge on securing huge amounts of cheap power — at a time when data centers are…

After halting construction on offshore wind farms and canceling leases for future projects, the Trump administration just took another step to erode America’s troubled offshore wind industry. The Interior Department wants to reevaluate a key approval for Revolution Wind — a $6.2 billion project that is already…

America’s energy supply crunch is driving a surge of federal and private investment in new electricity generation — from polluting gas turbines to cleaner developments like solar farms and geothermal plants. But gigawatts of power are already available for the taking across the U.S. economy in the form of wasted…

The geothermal startup Fervo Energy is now selling power to the grid from its Cape Station project in Utah — marking the first time a utility-scale, next-generation geothermal facility has achieved such a feat worldwide. The Houston-based firm turned on an initial 33-megawatt unit late last week and has been testing…

NEW YORK CITY — The enormous blades and hubs of offshore wind turbines are sprawled across a waterfront lot in Brooklyn, as a yellow lifting crane named Big Benny looms overhead. The energy firm Equinor is storing components here before shipping them out to Empire Wind , a 810-megawatt installation that is set to…

NEW YORK CITY — School districts nationwide are grappling with record diesel prices this fall as they resume shuttling students back and forth. But filling up isn’t a problem for some of the newest buses in New York City. That’s because these 10 long, yellow vehicles plug into the electric grid. On a clear, sunny…

The startup Mazama Energy just nabbed $135 million to accelerate its next-generation geothermal activities near Oregon’s Newberry Volcano. Mazama is seeking to generate clean electricity from superhot rocks — an emerging and largely unproven approach that could have an enormous payoff for the power sector. That’s…

Google is backing the buildout of a novel green-steel mill in Sweden as the tech giant grapples with rising greenhouse gas emissions from its AI expansion. On Thursday, the company said it is partnering with Stegra to help bring the Swedish firm’s flagship facility online. Unlike traditional coal-fueled mills,…

Making the cement that holds together our buildings and streets is a highly carbon-intensive process — one that involves burning lots of fossil fuels to blast materials with searing heat. But startups are developing technologies that could use clean electricity to produce cement instead, and a Boston-based firm is…

A third shuttered U.S. nuclear power plant is set to attempt a comeback with hefty support from the federal government. On Tuesday, the U.S. Department of Energy said it closed a loan of up to $1.9 billion to NextEra Energy to help finance the restart of the Duane Arnold Energy Center in Iowa, which shut down six…

Hyundai is set to break ground in southern Louisiana this week on a nearly $6 billion steel mill , which may become the lowest-carbon facility of its kind in the U.S. On Friday, the Korean industrial giant will hold a ceremony at the project site, where the fields of a former sugarcane plantation have been cleared…

Fervo Energy inked a landmark deal to supply Google with nearly 400 megawatts of clean electricity from the startup’s geothermal project in southwest Utah. The agreement is the largest of its kind for a next-generation geothermal system — an emerging technology that involves drilling deep into hot, dry rock to use…

The Trump administration has agreed to fork over nearly $4 billion since the spring to get major energy firms to abandon a dozen leases for U.S. offshore wind projects. The controversial maneuver to return lease payments to developers — often in exchange for their investing in fossil fuels — is part of President…

Thousands of feet beneath the desert valley of southwest Utah, a slender tool tucked inside a drill pipe is barreling through hot granite. The rod-shaped device, built by the startup Hephae Energy Technology , is a tracker of sorts, wirelessly sending data to help operators above steer the drill below and to measure…

A $500 million Biden-era grant to decarbonize steelmaking has been refashioned by the Trump administration to upgrade a coal-fueled blast furnace in southern Ohio. On Friday, Cleveland-Cliffs confirmed that the U.S. Department of Energy had changed the scope of the previously awarded funding for Cliffs’ Middletown…

Sage Geosystems has hit a big milestone out on a rugged tract near San Antonio: The startup is producing power from its first next-generation geothermal plant. The system is just the third of its kind to come online in the U.S. as the sector races to commercialize the source of on-demand clean electricity. The novel…

Next-generation geothermal energy has massive potential in the western United States, but it won’t be realized unless developers can overcome the big economic barriers these novel systems face. Unlike traditional geothermal plants, next-gen projects use innovative underground techniques to produce power wherever…

America’s aluminum sector is growing again after years of decline, spurred by tariffs and a push to revive domestic manufacturing. But the voracious power needs of aluminum smelters and communities’ concerns about pollution still pose major hurdles to scaling up production. Globally, a deficit in aluminum supply is…

The Department of Energy is backing a major battery project to bolster Puerto Rico’s fragile electric grid — even as the Trump administration axes funding for key clean energy initiatives across the U.S. territory. Last week, the DOE said it closed a nearly $490 million loan to a subsidiary of Pattern Energy to…