The fire broke out on late Sunday on the power plant’s cooling tower and spread to three others due to strong wind.
UK State Secretary Edward Dave said: "I’ve been reassured by National Grid that there is no risk to electricity supplies.
"I will be keeping in touch with the relevant authorities throughout. My priority is to understand the cause of the fire and get the affected unit back generating electricity as soon as it’s safe to do so."
The cause of the fire at the RWE npower-owned power plant is being investigated in partnership with Thames Valley Police and other agencies and also to determine the reason for the blaze.
Oxfordshire County Council Fire and Rescue Service assistant chief fire officer Simon Furlong said: "This was a serious fire which began in one of Didcot B power station’s cooling towers and spread to three other cooling towers.
"The fire itself was extinguished quickly – there are no reports of injuries, which of course is pleasing.
"As at 10am on Monday we have three fire engines on-scene still, dampening down hot spots and we will continue to have a presence there for at least the next 24 hours.
"An investigation has begun in conjunction with other agencies regarding the cause of the fire – I expect that it will take some time to determine the reasons behind what actually happened."
Image: Didcot Power Station in Oxfordshire, England. Photo: courtesy of Dave Price.
