With public opposition to data centers rising, other states, including New York, have considered similar moratoriums.

In a letter to the state legislature, Mills — a Democrat currently running for the U.S. Senate — said that pausing new data centers would be “appropriate given the impacts of massive data centers in other states on the environment and on electricity rates” and that she “would have signed this bill” if it had included an exemption for a data center project in the Town of Jay.

That project, Mills said, “enjoys strong local support from its host community and region.”

Melanie Sachs, a Democratic state representative who sponsored the bill, said Mills’ veto “poses significant potential consequences for all ratepayers, our electric grid, our environment, and our shared energy future.”