<ul data-eligibleForWebStory="true">Google's data centers doubled electricity use in four years, reaching 30.8 million megawatt-hours.Data centers now make up 95.8% of Google's electricity consumption, pushing for carbon-free sources.Efficiency improvements have slowed electricity growth, prompting investments in geothermal, nuclear fusion, and renewables.Google aims for 24/7 carbon-free energy globally, facing regional challenges in data center operations.Investments in stable, carbon-free sources like geothermal, nuclear fusion, and renewables are crucial.