A power plant in the midlands has been shut down following concerns over the discharge of hot water into the River Shannon.
The ESB has suspended the operation of the Lough Ree Power Plant “for the coming weeks.”
The utility said it is trying to change its environmental licence regarding the temperature of cooling water it pumps into the Shannon.
It said the issue is of “particular relevance during the summer months.”
There are concerns the hot water could pose a danger to marine life in the river.
The Environmental Protection Agency has confirmed it is investigating the issue.
The agency said it cannot comment any further as there are potential prosecutions pending.