A man has died in a suspected workplace accident.
It is believed the man, in his 50s, got trapped in machinery at the plant.
Gardai and the Health and Safety Authority are investigating.
In a statement, Bord na Mona confirmed it was carrying out an investigation into the death.
"It is with deep regret that we confirm that earlier today a Bord na Mona employee died in an accident at Lough Ree Power Station," a spokesman said.
"The company have been working with the emergency services through the night and have already informed the HSA.
"The company have also begun an internal inquiry into the circumstances of the man's death.
"Our deepest sympathies go to his family at this difficult time."