US energy regulators have denied a request to reconsider a decision that blocked an Amazon data centre, connected directly to Talen Energy’s Susquehanna nuclear power station in Pennsylvania, from increasing its power use, government filings show.

Members of the Federal Energy Regulatory Commission (Ferc) voiced concern about how the data centre might affect power reliability and costs for the general public.

Ferc denied a request for a rehearing on the matter, press reports said.