Meta’s 20-year deal with Constellation Energy follows similar maneuvers from Amazon, Google and Microsoft, but it will take years before nuclear energy can meet the tech industry’s insatiable demand for new sources of electricity. AI already uses vast amounts of energy, much of which comes from burning fossil fuels, which causes climate change. The unexpected popularity of AI products over the past few years has disrupted tech companies’ carefully-laid plans to supply their technology with only climate-friendly energy sources that don’t contribute to climate change.