RWE Npower's Didcot power station is operating at just half of its 1.4GW capacity after a fire in one of the cooling towers.
After the fire. on 19 October, Npower said the affected part of the site will remain non-operational until an investigation and repairs can take place.
The generator has so far said it is "too early to give any definitive estimate" of how long the investigation and repair will take.