It was stopped as a safety measure after last week's attack on the Nova Kakhovka dam.
The structure's collapse sent a cascade of water downstream, wiping out towns and villages.
Five out of six reactors at Zaporizhzhia - occupied by Russian forces but staffed by local workers were already in a state of cold shutdown.
Ukraine's nuclear agency Energoatom said the possibility of there not being enough water to cool the remaining reactor following the dam's destruction meant it was forced to follow suit.
The process involves control rods being inserted into the reactor core to stop the nuclear fission reaction and generation of heat and pressure.
The news emerged as the UK donated a further £16million in humanitarian aid to help the 42,000 people directly affected by the dam breach, which is being blamed on Moscow.
Hundreds of Ukrainians have been rescued from rooftops in the days following the deliberate breaching of the Kakhovka dam, which flooded villages, fields and roads in the Kherson region.
Last night, the Foreign Office confirmed the cash will be given to organisations on the ground. The Red Cross will get £10million, £5million is going to the UN Office for the Coordination of Humanitarian Affairs and £1million to the International Organisation for Migration.
This story is from the June 11, 2023 edition of Sunday Express.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber ? Sign In
This story is from the June 11, 2023 edition of Sunday Express.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
Already a subscriber? Sign In
Emily's expecting even more in '25
ENGLAND'S record points scorer Emily Scarratt is convinced 2025 is going to break new ground for women's rugby in this country.
LUKE: TRASH TALK IS JUST RUBBISH
WORLD CHAMPION Luke Humphries planted his standard at the summit of Alexandra Palace and sent out a warning to Peter 'Snakebite' Wright: \"Your trash talk won't work on me.\"
'Insecure' Elvis feared for future as Beatlemania was always on his mind
ELVIS Presley was all shook up and feared his music career would end when Beatlemania hit America 60 years ago.
Time to roll back the ‘harmful' nanny state
BRITAIN needs to roll back the nanny state and give its citizens more freedom to manage their own health and finances, an independent think tank has suggested.
Rapid nationalisation for failing train firms
BOSSES of failing train operators have been warned they could be fast-tracked for nationalisation.
Life after cancer: 'I am lucky to be here, but now I'm ready to move on'
DESPITE all of her career success Sarah Beeny reveals she is hugely proud that her four sons have formed a successful indie rock band.
growers AI to help cut global waste
RED SPIDER mites can devastate vegetable plants, as this image shows, but help is at hand thanks to artificial intelligence.
Monty brings blooming good news
PERENNIAL green-fingered favourite Monty Don shows no signs of wilting - and will host Gardeners' World for at least another two years.
Reeves: VAT on school fees will raise standards
CHANCELLOR Rachel Reeves has defended the introduction of VAT on school fees by insisting it will lead to \"more teachers\" and \"higher standards\" in the state sector.
Homes face £45 bill hike to clear bad energy debt
PLANS to charge every household up to £45 extra on their energy bills, to help write off £1.29billion in customer debt are being considered by the Government.