London Daily

Focus on the big picture.
Saturday, Aug 22, 2026

After 18 years, Europe's largest nuclear reactor to start regular output on Sunday

After 18 years, Europe's largest nuclear reactor to start regular output on Sunday

Finland's much-delayed Olkiluoto 3 (OL3) nuclear reactor, Europe's largest, began regular output early on Sunday, its operator said, boosting energy security in a region to which Russia has cut gas and power supplies.
Nuclear power remains controversial in Europe, primarily due to safety concerns, and news of OL3's start-up comes as Germany on Saturday switches off its last three remaining reactors, while Sweden, France, Britain and others plan new developments.

OL3's operator Teollisuuden Voima (TVO), which is owned by Finnish utility Fortum (FORTUM.HE) and a consortium of energy and industrial companies, has said the unit is expected to meet around 14% of Finland's electricity demand, reducing the need for imports from Sweden and Norway.

The new reactor is expected to produce for at least 60 years, TVO said in a statement on Sunday after completing the transition from testing to regular output.

"The production of Olkiluoto 3 stabilises the price of electricity and plays an important role in the Finnish green transition," TVO Chief Executive Jarmo Tanhua said in the statement.

Construction of the 1.6 gigawatt (GW) reactor, Finland's first new nuclear plant in more than four decades and Europe's first in 16 years, began in 2005. The plant was originally due to open four years later, but was plagued by technical issues.

OL3 first supplied test production to Finland's national power grid in March last year and was expected at the time to begin regular output four months later, but instead suffered a string of breakdowns and outages that took months to fix.

Russia's power exports to Finland ended last May when Russian utility Inter RAO said it had not been paid for the energy it sold, a consequence of the widening gulf between Moscow and Europe over the war in Ukraine.

Russian state export monopoly Gazprom shortly after ended shipments of natural gas to the Nordic nation.
Newsletter

Related Articles

0:00
0:00
Close
The rise and fall of Hui Ka Yan, China’s richest man
Woke: Britain Considers Plain Packaging for Cigars as Specialist Shops Warn of Industry Collapse
Britain's Public-Service Productivity Remains Below 2019 as £80 Billion Output Gap Fuels WFH Debate
Mandelson Epstein Case in Jeopardy as U.S. Files Stay Out of Reach
Prince Harry and Six Others Ordered to Pay £9.5 Million After High Court Defeat
Bank of England Holds Interest Rate at 3.75% as Inflation and Energy Risks Persist
UK AI Security Tests Find Autonomous Agent Attempting Malicious Code Injection
UK Economy Grows 0.4% in Second Quarter Amid Global Pressures
UK Joins European Allies in Condemning Israeli Settlement Plans in West Bank E1 Area
Multiple People Killed in A66 Collision Near Middlesbrough Involving Police Vehicle
UK Government Holds First National Day for Victims and Survivors of Terrorism
UK Met Office Warns of Severe Autumn Storms as Strong El Niño Follows Historic Drought
Petrol Bombs Set Luxury Cars Alight Outside Birmingham Wedding as Police Hunt Three Men
Bitcoin Surges Toward $80,000 as Short Squeeze and ETF Inflows Ignite Crypto Rally
Prince Harry and Co-Claimants Ordered to Pay £9.5 Million Toward Daily Mail Publisher’s Legal Costs
Prince Harry and Meghan Markle Reportedly Plan Return to Britain With Their Children
UK Court Ruling Threatens Deportation Plans for Potential Trafficking Victims to Albania
Kemi Badenoch Presses UK Government for Decisions on Rosebank and Jackdaw Oil Fields
UK Foreign Affairs Committee Chair Calls for Ban on Goods from Occupied West Bank
Andy Burnham Government to Place Civil Servants Directly in English Mayoral Offices
Met Office Warns Major El Niño Could Bring Stormier, Wetter Autumn to UK
UK Economy Gains Unexpected Momentum Ahead of Andy Burnham Government’s First Budget
Twenty-Nine US States Take Meta to Trial Over Alleged Child Addiction on Instagram and Facebook
Former Scottish National Party Executive Peter Murrell Jailed for Five Years Over £400,000 Embezzlement
Moderna and Merck's Personalized Cancer Vaccine Succeeds in Historic Late-Stage Melanoma Trial
Prince Harry and Meghan to Move Back to Britain With Their Children
England and Wales Have Fewer Than 1,800 Prison Places Left for Men
Royal Navy to Accelerate DragonFire Laser Deployment Against Growing Drone Threat
Northern Ireland Approves Five Hundred Million Pound Belfast Harbour Expansion
Great British Railways Takes Full Control of Avanti West Coast as Rail Nationalisation Reaches Final Stage
UK AI Safety Institute Calls for Mandatory Security Audits of Advanced AI Models
Scotland Secures Three Billion Pounds for Floating Offshore Wind Hub in Aberdeen
Government Overrides Local Councils to Approve Green Belt Housing Across Southern England
UK and EU Move Toward Mutual Recognition of Food Standards to Ease Cross-Channel Trade
Government Plans Multibillion-Pound Private Healthcare Expansion to Cut NHS Surgical Backlogs
Bank of England Signals Faster Rate Cuts as Inflation Falls Below the Two Percent Target
Suspected People Smuggler Arrested After Investigation Identified Him
Children's Doctors Warn That Vaping Can Lead Young People to Smoking
Hundreds of Thousands of Students Receive GCSE and Vocational Results Across England, Wales and Northern Ireland
Here Is What Can Never Happen in Your Country: Taiwan Is Giving Money to All Its People Because It Collected Too Much Tax
UK Inflation Rises to 2.9% as Energy Bills Jump
UK Issues New Conduct Guide for Asylum Seekers on Consent and Respect
Moderna Shares Surge After Positive Personalized Skin Cancer Trial Results
UK Markets Watch US National Debt Surpass Forty Trillion Dollars
UK Broadcasters Urge Government to Invest in Digital Participation and Broadband
CVC Capital Partners and Standard Life Launch Two Billion Pound Pension Risk Transfer Venture
UK Private Sector Productivity Growth Accelerates in Second Quarter
UK Foreign Secretary Ed Miliband Condemns Israeli E1 Settlement Tender
UK Watchdog Investigates Trainline, Virgin Atlantic and RED Driving School Over Hidden Fees
Prince Harry and Meghan Markle Plan Move to Private Home Outside London
×