Data centers are putting new strain on California’s grid. A new report estimates the impacts

California is a major hub for data centers — the facilities that store and transmit much of the internet. But just how much these power-hungry operations affect the state’s energy use, climate and public health remains an open question for researchers.

A released this week by the environmental think tank Next 10 and a UC Riverside researcher attempts to quantify that impact — but its authors say the report is only an estimate without harder data from the centers themselves.

“We are just making these reports pretty much in the dark — since there’s almost zero information,” said Shaolei Ren, an AI researcher at UC Riverside and co-author of the report. “We have extremely little information about data centers in California.”

Ren and his coauthors conclude that between 2019 and 2023, electr