Hundreds of conversations with Anthropic’s chatbot were discovered as being publicly accessible.
Campaign group Electrical Safety First has urged those “heading abroad this summer to think before they buy”.
The out-of-control AI found four logins which allowed it to access multiple unnamed online services.
The regulator said a fee of between £237,500 to £712,500 per megawatt should be charged for upcoming projects.
It marks a change of tone for his administration, which has taken a more hands-off approach to the technology.