London Daily

Focus on the big picture.
Wednesday, Nov 12, 2025

After 18 years, Europe’s largest nuclear reactor starts regular output

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 switched 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 and a consortium of energy and industrial companies, has said the unit is expected to meet around 14 percent 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 stabilizes 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
UK Upholds Firm Rules on Stablecoins to Shield Financial System
Brussels Divided as UK-EU Reset Stalls Over Budget Access
Prince Harry’s Remembrance Day Essay Expresses Strong Regret at Leaving Britain
UK Unemployment Hits 5% as Wage Growth Slows, Paving Way for Bank of England Rate Cut
Starmer Warns of Resurgent Racism in UK Politics as He Vows Child-Poverty Reforms
UK Grocery Inflation Slows to 4.7% as Supermarkets Launch Pre-Christmas Promotions
UK Government Backs the BBC amid Editing Scandal and Trump Threat of Legal Action
UK Assessment Mis-Estimated Fallout From Palestine Action Ban, Records Reveal
UK Halts Intelligence Sharing with US Amid Lethal Boat-Strike Concerns
King Charles III Leads Britain in Remembrance Sunday Tribute to War Dead
UK Retail Sales Growth Slows as Households Hold Back Ahead of Black Friday and Budget
Shell Pulls Out of Two UK Floating Wind Projects Amid Renewables Retreat
Viagogo Hit With £15 Million Tax Bill After HMRC Transfer-Pricing Inquiry
Jaguar Land Rover Cyberattack Pinches UK GDP, Bank of England Says
UK and Germany Sound Alarm on Russian-Satellite Threat to Critical Infrastructure
Former Prince Andrew Faces U.S. Congressional Request for Testimony Amid Brexit of Royal Title
BBC Director-General Tim Davie and News CEO Deborah Turness Resign Amid Editing Controversy
Tom Cruise Arrives by Helicopter at UK Scientology Fundraiser Amid Local Protests
Prince Andrew and Sarah Ferguson Face Fresh UK Probes Amid Royal Fallout
Mothers Link Teen Suicides to AI Chatbots in Growing Legal Battle
UK Government to Mirror Denmark’s Tough Immigration Framework in Major Policy Shift
UK Government Turns to Denmark-Style Immigration Reforms to Overhaul Border Rules
UK Chancellor Warned Against Cutting Insulation Funding as Budget Looms
UK Tenant Complaints Hit Record Levels as Rental Sector Faces Mounting Pressure
Apple to Pay Google About One Billion Dollars Annually for Gemini AI to Power Next-Generation Siri
UK Signals Major Shift as Nuclear Arms Race Looms
BBC’s « Celebrity Traitors UK » Finale Breaks Records with 11.1 Million Viewers
UK Spy Case Collapse Highlights Implications for UK-Taiwan Strategic Alignment
On the Road to the Oscars? Meghan Markle to Star in a New Film
A Vote Worth a Trillion Dollars: Elon Musk’s Defining Day
AI Researchers Claim Human-Level General Intelligence Is Already Here
President Donald Trump Challenges Nigeria with Military Options Over Alleged Christian Killings
Nancy Pelosi Finally Announces She Will Not Seek Re-Election, Signalling End of Long Congressional Career
UK Pre-Budget Blues and Rate-Cut Concerns Pile Pressure on Pound
ITV Warns of Nine-Per-Cent Drop in Q4 Advertising Revenue Amid Budget Uncertainty
National Grid Posts Slightly Stronger-Than-Expected Half-Year Profit as Regulatory Investments Drive Growth
UK Business Lobby Urges Reeves to Break Tax Pledges and Build Fiscal Headroom
UK to Launch Consultation on Stablecoin Regulation on November 10
UK Savers Rush to Withdraw Pension Cash Ahead of Budget Amid Tax-Change Fears
Massive Spoilers Emerge from MAFS UK 2025: Couple Swaps, Dating App Leaks and Reunion Bombshells
Kurdish-led Crime Network Operates UK Mini-Marts to Exploit Migrants and Sell Illicit Goods
UK Income Tax Hike Could Trigger £1 Billion Cut to Scotland’s Budget, Warns Finance Secretary
Tommy Robinson Acquitted of Terror-related Charge After Phone PIN Dispute
Boris Johnson Condemns Western Support for Hamas at Jewish Community Conference
HII Welcomes UK’s Westley Group to Strengthen AUKUS Submarine Supply Chain
Tragedy in Serbia: Coach Mladen Žižović Collapses During Match and Dies at 44
Diplo Says He Dated Katy Perry — and Justin Trudeau
Dick Cheney, Former U.S. Vice President, Dies at 84
Trump Calls Title Removal of Andrew ‘Tragic Situation’ Amid Royal Fallout
UK Bonds Rally as Chancellor Reeves Briefs Markets Ahead of November Budget
×