More than 850 homes have been affected by a power cut near Diss.
UK Power Networks became aware of the problem at 3.29pm on Thursday, February 27, after a fault was discovered on a high-voltage overhead electricity line.
Engineers are on site, while attempts were also made to reconnect some homes remotely.
However, these attempts failed, and there are currently 869 homes without power - many appear to be in and around the village of Brome, just south of Diss.
A spokesperson for UK Power Networks said: "We're sorry for any disruption this may have caused. We didn't know in advance there would be a power cut, but now that we know, our teams will do everything they can to get power back quickly."
They also said that they had received reports of a grounded overhead cable, and a team has been sent to further investigate.
It is estimated that power will be restored to all homes by 6pm, although this could change.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here