East Coast Mainline's energy loss has been the biggest interruption in the network.
The National Rail Service said the supply had failed by the Newark North Gate and Retford between 17:37 GMT and the trains that traveled between Peterborough and Doncaster.
Network Rail said the personnel were trapped to repair ash and rescue passenger trains.
Many services, coming from London, were suspended on Wednesday night without interruption.
London North Eastern Railway delayed apologizing and advised passengers not to travel on Wednesday unless absolutely necessary.
Travel tickets will be valid on Wednesday on Thursday, or customers may request full refunds for unused revenues, the company said.
The National Railway advised travelers to review trips before traveling.
According to the spokesman, the engineers were on the site and "it would be hard to recover the entire passenger service during the night" on Thursday.
"We understand the inconveniences caused by the incident and suffer abuse during travel."
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