As U.S. tech companies race to build the data centers fueling the AI boom, they are increasingly putting up their own power plants — off the grid and running on gas — to get online faster.

The AI industry's hunger for power keeps growing. Nvidia is investing up to $3 billion in Lancium, a power infrastructure developer that already has four gigawatts under contract…

Amazon has confirmed it is financing a massive, private gas power plant in Texas that could become the single largest source of greenhouse gas emissions in the United States.