Big Tech firms are requesting hundreds of gigawatts of power demand from data centers to connect to the U.S. grids. But aging grid infrastructure in key regional markets and grid investments lagging behind the soaring demand are forcing grid operators to offer some alternative options to the hyperscalers looking to hook up their proposed data centers to the grids. One is “bring your own generation”—a trend that’s expected to rise in the coming years. In many areas, grid operators are telling Big…