Silicon Valley giants were once the most vocal advocates and generous financiers of clean energy investments, but they may now become the biggest villains in the renewable energy revolution. With surging energy demands from artificial intelligence, emissions from large tech companies have spiked, making their lofty decarbonization goals increasingly elusive. Tech giants, including Google, Meta, Microsoft, and OpenAI, are pushing for greater deployment of renewable energy infrastructure and research into new forms of clean energy, but keeping up with the enormous energy demands of AI is a daunting task.