Nuclear
Nucor bets on silver bullet for ‘green’ steel: Nuclear fusion
The steelmaking giant said Helion Energy would build a fusion reactor by 2030 at one of Nucor’s steel plants. But fusion is still more dream than reality.
By Eric Wesoff .
Climatetech finance
Hydrogen
‘Green’ hydrogen debate heats up ahead of tax-credit decision
Leaked details about rules governing billions of dollars in hydrogen subsidies have added fuel to an already fiery debate. Proposed regulations could come next week.
By Jeff St. John .
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Marine transport
Electric boat builder Arc raises $70M for cleaner, quieter vessels
The Los Angeles–based startup is working to build a "mass-market" boat for water sports. Demand for electric vessels is rising as boaters look for less-polluting ways to ply rivers and lakes.By Maria Gallucci .
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Batteries
Is graphene a cleantech supermaterial? This startup thinks so
Lyten recently raised $200M to scale up production of batteries made with graphene, a material that’s light, strong, conductive — and elusive.By Eric Wesoff .
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Long-duration energy storage
Long-duration storage gets big boost with $325M from DOE
The department selected nine proposals with the goal of accelerating the adoption of emerging technologies, which could be key to cleaning up the grid.By Julian Spector .
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Nuclear
Nuclear startup Oklo looks to rebound with backing from Sam Altman
The microreactor pioneer has a SPAC deal, signed customers and potential sources for its specialized fuel. Now it needs an OK from regulators.By Eric Wesoff .
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Clean industry
Boston Metal gets big funding boost to make green steel
Steel is a heavily polluting, hard-to-decarbonize and vital industry. The startup’s $262 million in Series C funding will help it tackle that problem.By Maria Gallucci .
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Air travel
‘E-fuels’ are catching on as a way to decarbonize air travel
Massachusetts-based Lydian is the latest startup to raise funds to produce power-to-liquids fuels, which could emit less CO2 overall than fossil jet fuel.By Maria Gallucci .
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Clean energy manufacturing
DOE offers $15.5 billion to retool existing auto plants for EVs
The Biden administration announced the funding amid auto workers’ concerns that shifting to electric cars could cut jobs from traditional manufacturing hubs.By Maria Gallucci .
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Long-duration energy storage
Eos wins $400M DOE loan guarantee to build longer-lasting batteries
Long-duration energy storage is a tough business, but it's vital to decarbonizing the grid. Eos thinks its zinc-based batteries are the best candidate for the job.By Jeff St. John .
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Recycling renewables
Redwood Materials lands $1B to boost its battery recycling efforts
The startup founded by Tesla alum JB Straubel wants to spend $7 billion on recycling to supply a U.S. battery industry now dependent on China.By Jeff St. John .
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