The U.S. government is sitting on dozens of tons of weapons-grade plutonium. It's hoping startups can find a use for it.

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Ascend Elements said that it will be filing for Chapter 11 bankruptcy in the wake of a canceled government grant and a challenging market for lithium-ion batteries.

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Merino Energy has simplified the heat pump dramatically in a quest to make them cheaper and easier to install.

Meta, Microsoft, and Google are all betting big on new natural gas power plants to run their AI data centers. They may regret it.

GridBeyond's hardware and software coordinates several gigawatts of supply and demand to help balance the flow of electricity on the grid. The idea has attracted investors like Samsung Ventures.

The duo have teamed up with other companies to launch Utilize, which seeks to change how the grid is used and regulated.

Startup Hyperscale Power is developing technology that promises to shrink power transformers, freeing up precious space within data centers.