AI needs more energy and Sam Altman is investing.

The OpenAI CEO joined big name VC firms Andreessen Horowitz and Atomic in a $20 million seed round of funding for solar energy company Exowatt. The Miami-based startup is developing a modular energy platform to power data centers at a time when AI is expected to substantially drive up the power needs of global data centers. AI advocates are on the hunt for cheap and rapidly scalable energy systems as the energy needs of the technology explode.