Howden finds US data-center power demand growing far faster than the grid

US data-center electricity demand has grown much faster than the grid supporting it. A new Howden report, described by TechRadar on November 12, estimates annual demand growth of 19% since 2000 against 2% grid expansion. That mismatch puts electricity supply at the center of the industry’s ability to keep building.

Howden, an insurance broker, drew on US Energy Information Administration and S&P Global data going back to 2000.

TechRadar describes the problem as demand outstripping supply by ten times. But the cited 19% and 2% figures compare rates of growth, not total electricity demand with available supply. They show demand growing nearly ten times as fast; those percentages alone do not establish a tenfold shortfall in electricity.

Howden also estimates that maintaining the current pace of data-center expansion without increasing grid usage would require up to 58% of power demand to come from alternative sources. The condition matters: this is an estimate of what continued expansion would require under a limit on grid usage, not a claim that those alternatives are already supplying that share.

The construction risk has a longer horizon. TechRadar cites a Gartner report from June warning that the current growth in data-center power demand could halt new construction by 2030. That is a conditional forecast about adding facilities—not a finding that existing data centers will stop operating, or that an industry-wide shutdown is inevitable.