HWNEWS
Tech firms are parking gas generators next to their buildings to skip the grid, and BloombergNEF says the workaround is about to hit its own supply, labor, and permit walls.
At a row of tents outside a small Ohio town, servers are running on modular gas turbines because the grid cannot deliver power fast enough. By 2035, BloombergNEF estimates, U.S. data centers could consume a fifth of the country's electricity. The portable-turbine shortcut that is buying time is itself about to hit supply-chain, workforce, and permitting walls.
BloombergNEF's latest U.S. data-center outlook lifts its December 2025 forecast to as much as 194 gigawatts of demand in 2035, nearly double the prior projection, according to Canary Media's analysis of the report. The current share of U.S. power going to data centers sits around 5.9%, so the implied jump is roughly threefold over a decade. The same forecast has been re-reported by Bloomberg Law and Data Center Dynamics, both citing the same underlying research.
xAI's Colossus 2 facility outside Memphis has run on truck-bed diesel generators since August 2025, and the Musk-led AI lab acquired APR Energy, a Florida-based operator of more than a gigawatt of mobile gas and diesel turbines, in May 2026, per the Canary Media analysis. Google has proposed building its own utility-scale gas plant alongside a Nebraska data center.
APR Energy's mobile turbines are essentially large jet engines on trailers, designed to be shipped where power is needed fast. The modular units are pre-assembled gas generators that can be installed in months rather than the years a transmission-line build or grid interconnection can take. The bottleneck the off-grid option is built to bypass is real: a new substation or high-voltage line can run a multi-year permitting and construction cycle. Off-grid gas is the fastest legal way to put a megawatt behind a server hall, and that speed is what made it the default fallback.
Gas turbines are in short supply globally because the same hardware is being chased by utilities, oil-and-gas operators, and grid developers, and the workforce trained to install and maintain them is constrained, according to experts cited in the Canary Media analysis. The permits that let a regulated utility put a stack up in a backyard are not the same permits that let a data-center operator do the same thing next to a residential street, and the legal fights are already starting. The NAACP and allied groups have sued xAI alleging the Memphis turbines are running without required permits and polluting nearby majority-Black neighborhoods; xAI disputes the claims, which remain untested in court.
The pattern matters because the off-grid option is being deployed as a permanent interim, not a bridge. If the supply, labor, and permit walls generalize, the next several years of data-center build-out will land as a series of local fights over stacks, fuel, and air permits, with operators absorbing the cost of the delay or pushing it onto ratepayers through grid upgrades the same operators then lean on. In the latter case, the firms that bought portable turbines to avoid waiting for the grid would end up paying twice: once for the temporary stack, and once for the permanent line.
BNEF's near-doubling of its December forecast in seven months is the clearest signal that the workaround is being pulled forward faster than the constraints behind it can catch up. Whether the supply, labor, and permit walls bend before the 2035 demand peak arrives, or whether the data-center buildout simply shifts its friction from the grid to the local stack, is the question that will define the next phase of the build.