AI energy efficiency

Technology

Tokens per Watt: Why AI Efficiency Is Measured Differently Now

James P Watson
October 9, 2026

For years, data center efficiency came down to a few familiar numbers, most notably power usage effectiveness, which compares total facility energy to the energy used by IT equipment. Those metrics still matter, but AI is changing what efficiency means. As organizations build large AI factory sites, a new measure is getting more attention: how […]