Enercon said a satellite communications failure that cut remote service links to almost 6,000 wind turbines has been confirmed as a cyberattack, as the OEM raced to find ways to restore normal access.

The German group was one of a number of companies and organisations whose operations were hit by “massive disruption” that coincided almost exactly with the Russian invasion of Ukraine.

Some 5,800 turbines totaling 11GW in central and Eastern Europe were left isolated from remote service control, although they continued operating.