Data centers completed in Silicon Valley sit empty for years—unable to power up because the local utility lacks capacity to supply them with electricity.

AI computing will more than double electricity demand by 2035, but aging infrastructure and permitting delays are preventing data centers from going online nationwide.

Santa Clara’s utility won’t complete upgrades until 2028, forcing developers to shift billion-dollar projects to Texas, Louisiana and New Mexico for more available power.

Two of the world’s biggest data center developers have projects in Nvidia Corp.’s hometown that may sit empty for years because the local utility isn’t ready to supply electricity.

In Santa Clara, California, where the world’s biggest supplier of artificial-intelligence chips is based, Digital Realty T

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