Gradient's heat pumps fit in windows, minimizing installation times. Now, it is introducing software to make those units more intelligent.

Vema Hydrogen drills wells to stimulate hydrogen production deep underground, which could result in some of the cheapest hydrogen available.

Avalanche has raised $29 million in fresh funding to pursue its unique approach to fusion power, which can currently fit on a table.

Elon Musk's reported merging of SpaceX, xAI, and Tesla harkens back to the heyday of General Electric — or maybe the robber barons of the Gilded Age.

The startup is partnering with utilities to help homeowners determine the best upgrades to cut their energy use.